paleo data:
  measurement table:
    table name: paleo1measurement1
    missing value: nan
    depth:
      variable name: depth
      variable type: measured
      units: cm
      t sid: WEB60c27894
      has mean: 471.9399
      has median: 476
      has max: 951
      has min: 40
      is primary: true
      notes: NA; paleoData_isPrimary has been standardized
      values: 40
      values: 50
      values: 60
      values: 70
      values: 80
      values: 90
      values: 98
      values: 103
      values: 108
      values: 112
      values: 116
      values: 121
      values: 125
      values: 130
      values: 135
      values: 140
      values: 144
      values: 148
      values: 152
      values: 156
      values: 161
      values: 165
      values: 169
      values: 173
      values: 177
      values: 180
      values: 184
      values: 188
      values: 192
      values: 196
      values: 200
      values: 204
      values: 212
      values: 216
      values: 222
      values: 226
      values: 231
      values: 235
      values: 240
      values: 245
      values: 250
      values: 255
      values: 259
      values: 264
      values: 268
      values: 272
      values: 276
      values: 280
      values: 284
      values: 288
      values: 292
      values: 296
      values: 300
      values: 305
      values: 310
      values: 315
      values: 317
      values: 320
      values: 322
      values: 331
      values: 335
      values: 339
      values: 340
      values: 344
      values: 348
      values: 352
      values: 359
      values: 363
      values: 367
      values: 372
    uncertainty low95:
      variable name: uncertaintyLow95
      units: yr BP
      t sid: WEB0e036388
      has mean: 1277.8727
      has median: 2009.3
      has max: 3084.3
      has min: -243.2
      units original: yr BP
      datum: 1950
      summary statistic: quantile 2.5
      inferred material: age
      notes: NA; paleoData_summaryStatistic has been standardized; paleoData_inferredMaterial has been standardized; paleoData_datum has been standardized
      mean value12k: 1277.8727
      median res12k: 13.1
      values: -243.2
      values: -235
      values: -213.7
      values: -187.4
      values: -170.9
      values: -154.7
      values: -145.2
      values: -133.5
      values: -123.3
      values: -112.6
      values: -103.1
      values: -93.8
      values: -85.6
      values: -76.6
      values: -69
      values: -60.4
      values: -54.9
      values: -49.1
      values: -40.7
      values: -28.4
      values: -13.4
      values: 0.8
      values: 11
      values: 19.9
      values: 27.6
      values: 31.8
      values: 39.8
      values: 46.2
      values: 50.4
      values: 54.2
      values: 58.2
      values: 68.1
      values: 88.1
      values: 97.3
      values: 108.8
      values: 115.9
      values: 125.1
      values: 131.2
      values: 139.8
      values: 146.7
      values: 152.7
      values: 167.7
      values: 177.7
      values: 188.2
      values: 197.2
      values: 204.8
      values: 212.9
      values: 219.4
      values: 225.8
      values: 229.6
      values: 235
      values: 239.5
      values: 243.2
      values: 313.6
      values: 362.2
      values: 391.8
      values: 402.6
      values: 419.2
      values: 428.3
      values: 469.8
      values: 485
      values: 495
      values: 497.5
      values: 507.4
      values: 516.7
      values: 552.7
    uncertainty high95:
      variable name: uncertaintyHigh95
      t sid: WEBba2196c8
      units: unitless
      has mean: 1739.9836
      has median: 2453.9
      has max: 5237.9
      has min: 79.6
      summary statistic: quantile 97.5
      inferred material: age
      notes: NA; paleoData_summaryStatistic has been standardized; paleoData_inferredMaterial has been standardized
      mean value12k: 1739.9836
      median res12k: 13.1
      values: 79.6
      values: 107.6
      values: 117
      values: 129.2
      values: 145.8
      values: 168.1
      values: 188.6
      values: 195.7
      values: 198.4
      values: 201.6
      values: 204.7
      values: 209.5
      values: 212.9
      values: 216.4
      values: 222.8
      values: 228.3
      values: 234.4
      values: 242.9
      values: 248.4
      values: 250.1
      values: 252.6
      values: 254.3
      values: 256.8
      values: 259.5
      values: 262.6
      values: 264.2
      values: 266.6
      values: 270.2
      values: 273.7
      values: 278.4
      values: 284
      values: 285
      values: 289.5
      values: 293.3
      values: 300.8
      values: 307
      values: 314.6
      values: 322.3
      values: 336.7
      values: 352.8
      values: 367.4
      values: 374.3
      values: 377.2
      values: 386
      values: 398.9
      values: 412.6
      values: 428.2
      values: 442.7
      values: 459.1
      values: 476.9
      values: 492
      values: 508.7
      values: 524.9
      values: 552.4
      values: 589.7
      values: 657.7
      values: 689
      values: 736.6
      values: 769.2
      values: 921.2
      values: 992.3
      values: 1063.9
      values: 1082.4
      values: 1152.3
      values: 1224.2
      values: 1263.1
      values: 1268.8
      values: 1271
data set name: Aljojuca.Bhattacharya.2015
archive type: LakeSediment
created by: lipd.net
lipd complete: 100%
has depth: 1
n unique ages: 14
n unique good ages: 0
n unique other ages: 0
max year: 4139.7
min year: -49.2
ages per kyr: 0
lipdverse link: https://lipdverse.org/data/8yG74c3je9wOKwzZiwnQ/1_0_18
other ages per kyr: 0
dataset id: 8yG74c3je9wOKwzZiwnQ
original data url: https://doi.org/10.25921/27zc-fs42
dataset version: 1.0.18
lipd version: 1.3
pub: Cultural implications of late Holocene climate change in the Cuenca Oriental, Mexico

has mean: 23.0159
has median: 4.2
has max: 332.5
has min: 4.2

scope: climate

seasonality: NA

has mean: 23.0159
has median: 4.2
has max: 332.5
has min: 4.2

scope: climate

seasonality: NA

has mean: 23.0159
has median: 4.2
has max: 332.5
has min: 4.2

variable: effectivePrecipitation
direction: negative
scope: climate
variable group: P-E
seasonality: Annual
variable detail: @surface
seasonality general: Annual

method: VPDB
seasonality: NA

has mean: 23.0159
has median: 4.2
has max: 332.5
has min: 4.2

compilation name: HoloceneAbruptChange
compilation version: 0_5_0
compilation version: 0_6_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0
compilation version: 0_10_0
compilation version: 0_11_0

compilation name: HoloceneHydroclimate
compilation version: 0_0_2
compilation version: 0_1_0
compilation version: 0_2_0
compilation version: 0_3_0
compilation version: 0_4_0
compilation version: 0_5_0
compilation version: 0_6_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0
compilation version: 0_9_1

compilation name: Hydro21k
compilation version: 0_1_1
compilation version: 0_2_0
compilation version: 0_3_1
compilation version: 0_4_0
compilation version: 0_5_0
compilation version: 0_6_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0

scope: climate

seasonality: NA

has mean: 23.0159
has median: 4.2
has max: 332.5
has min: 4.2

has mean: 26.9829
has median: 27.8
has max: 111.3
has min: 1.5

scope: climate

seasonality: NA

has mean: 26.9829
has median: 27.8
has max: 111.3
has min: 1.5

scope: climate

seasonality: NA

has mean: 26.9829
has median: 27.8
has max: 111.3
has min: 1.5

scope: climate

seasonality: NA

has mean: 26.9829
has median: 27.8
has max: 111.3
has min: 1.5

variable: effectivePrecipitation
direction: positive
scope: climate
variable group: M
variable detail: runoff@catchment
seasonality: Annual
seasonality general: Annual

seasonality: NA

has mean: 26.9829
has median: 27.8
has max: 111.3
has min: 1.5

compilation name: HoloceneAbruptChange
compilation version: 0_5_0
compilation version: 0_6_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0
compilation version: 0_10_0
compilation version: 0_11_0

compilation name: Hydro21k
compilation version: 0_4_0
compilation version: 0_5_0
compilation version: 0_6_0
compilation version: 0_7_0
compilation version: 0_8_0
compilation version: 0_9_0

scope: climate

seasonality: NA

has mean: 26.9829
has median: 27.8
has max: 111.3
has min: 1.5

scope: climate

seasonality: NA

has mean: 26.9829
has median: 27.8
has max: 111.3
has min: 1.5

scope: climate

seasonality: NA

has mean: 26.9829
has median: 27.8
has max: 111.3
has min: 1.5

variable name: age
units: yr BP
t sid: WEB00e0403b
has mean: 1501.271
has median: 2242.2
has max: 4139.7
has min: -49.2
units original: yr BP
datum: 1950
is primary: true
notes: NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized
values: -49.2
values: -33.8
values: -18.7
values: -3.1
values: 12.6
values: 28
values: 40.4
values: 48.1
values: 55.5
values: 61.5
values: 67.5
values: 75
values: 81
values: 88.5
values: 96
values: 103.5
values: 109.5
values: 115.5
values: 121.5
values: 127.6
values: 135.2
values: 141.4
values: 147.4
values: 153.7
values: 159.9
values: 164.5
values: 170.7
values: 176.7
values: 182.8
values: 188.9
values: 195.1
values: 201.4
values: 214.2
values: 220.5
values: 230
values: 236.2
values: 244.3
values: 250.6
values: 258.5
values: 266.4
values: 274.2
values: 284.9
values: 293.4
values: 304.1
values: 312.6
values: 321.1
values: 329.6
values: 338.2
values: 346.6
values: 355.3
values: 363.7
values: 372.4
values: 381
values: 430.8
values: 480.9
values: 531.4
values: 551.5
values: 581.6
values: 601.9
values: 692.5
values: 733
values: 772.7
values: 782.9
values: 823.1
values: 863.3
values: 900.4
values: 960
values: 994.1
values: 1028.2

proxy: d18O
variable name: d18O
t sid: WEB4ef1e8b8
units: permil
has mean: -5.8045
has median: -6.39
has max: 0.6
has min: -9.82
proxy lumps: isotope
mean value12k: -5.8045
use in global temperature analysis: TRUE
median res12k: 13.1
proxy general: isotopic
proxy lumps original: d18O
notes: "We interpret changes in d18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) d18O"
QC certification: CH, CR
proxy detail: authigenic calcite
most recent compilations: HoloceneAbruptChange-0_10_0
values: -6.35
values: -4.87
values: -4.92
values: -7.66
values: -8.3
values: -7.25
values: -9.77
values: -4.8
values: -5.87
values: -6.36
values: -6.18
values: -9.33
values: -4.52
values: -8.12
values: -7.99
values: -5.55
values: -7.41
values: -7.44
values: -8.72
values: -9.59
values: -8.43
values: -8.22
values: -8.27
values: -8.28
values: -9.39
values: -8.11
values: -7.02
values: -7.14
values: -8.02
values: -8.25
values: -7.79
values: -7.57
values: -7.72
values: -5.08
values: -7.32
values: -6.43
values: -7.19
values: -6.64
values: -5.9
values: -7.27
values: -8.39
values: -5.33
values: -5.95
values: -8.99
values: -4.67
values: -3.68
values: -6.97
values: -1.47
values: -5.32
values: -3.5
values: -5.26
values: -8.66
values: -6.98
values: -7.01
values: -1.55
values: -0.68
values: -0.65
values: -0.84
values: -0.76
values: -1.74
values: -0.69
values: 0.25

proxy: d13C
variable name: d13C
t sid: WEB5d337c69
units: unitless
has mean: -1.7008
has median: -2.3
has max: 1.68
has min: -4.68
proxy lumps: isotope
median res12k: 13.1
mean value12k: -1.7008
proxy general: isotopic
proxy lumps original: d13C
values: -2.24
values: -1.95
values: -1.43
values: -2.43
values: -2.31
values: -2.23
values: -2.83
values: -1.26
values: -2.15
values: -1.96
values: -2.1
values: -2.84
values: -2.64
values: -1.89
values: -2.55
values: -2.34
values: -1.56
values: -2.46
values: -2.38
values: -2.49
values: -2.67
values: -2.56
values: -2.77
values: -2.61
values: -2.3
values: -2.26
values: -2.27
values: -2.37
values: -2.52
values: -1.51
values: -1.88
values: -1.3
values: -1.19
values: -1.65
values: -2.16
values: -1.04
values: -1.35
values: -2.75
values: -1.82
values: -1.15
values: -3.13
values: 0.45
values: -1.58
values: -0.58
values: -3.5
values: -3.41
values: -3.87
values: 0.1
values: 0.61
values: 0.79
values: 0.65
values: 0.6
values: 0.13
values: 0.37
values: 0.84
values: 1.13
values: 0.96
values: 1.09
values: 1.68
values: 1.35
values: 1.02
values: 0.77
values: 0.67
values: 0.66
values: 0.4
values: 0.49
values: -0.22

table name: paleo1measurement2
missing value: nan
depth:
  variable name: depth
  units: cm
  t sid: WEB5429e74b
  has mean: 495.7119
  has median: 522
  has max: 840
  has min: 10
  is primary: true
  notes: NA; paleoData_isPrimary has been standardized
  values: 10
  values: 20
  values: 30
  values: 60
  values: 80
  values: 100
  values: 120
  values: 140
  values: 160
  values: 180
  values: 200
  values: 214
  values: 220
  values: 222
  values: 234
  values: 240
  values: 250
  values: 260
  values: 264
  values: 270
  values: 276
  values: 280
  values: 287
  values: 300
  values: 305
  values: 310
  values: 315
  values: 322
  values: 330
  values: 335
  values: 340
  values: 350
  values: 360
  values: 367
  values: 370
  values: 372
  values: 385
  values: 388
  values: 400
  values: 407
  values: 414
  values: 420
  values: 426
  values: 430
  values: 435
  values: 440
  values: 442
  values: 453
  values: 461
  values: 464
  values: 470
  values: 475
  values: 479
  values: 484
  values: 490
  values: 494
  values: 500
  values: 506
  values: 510
  values: 515
  values: 520
  values: 524
  values: 530
  values: 536
  values: 540
  values: 546
  values: 550
  values: 555
  values: 560
  values: 564
  values: 570
uncertainty low95:
  variable name: uncertaintyLow95
  units: yr BP
  t sid: WEBa76a84ed
  has mean: 1399.0814
  has median: 1986.3
  has max: 2532.8
  has min: -282.7
  units original: yr BP
  datum: 1950
  summary statistic: quantile 2.5
  inferred material: age
  notes: NA; paleoData_summaryStatistic has been standardized; paleoData_inferredMaterial has been standardized; paleoData_datum has been standardized
  mean value12k: 1399.0814
  median res12k: 21.1
  values: -282.7
  values: -269.7
  values: -251.9
  values: -213.7
  values: -170.9
  values: -142.4
  values: -93.7
  values: -60.4
  values: -16.3
  values: 31.8
  values: 58.2
  values: 92.1
  values: 104.7
  values: 108.8
  values: 129.8
  values: 139.8
  values: 152.7
  values: 179.7
  values: 188.2
  values: 201
  values: 212.9
  values: 219.4
  values: 228.8
  values: 243.2
  values: 313.6
  values: 362.2
  values: 391.8
  values: 428.3
  values: 466
  values: 485
  values: 497.5
  values: 521.8
  values: 680.4
  values: 793.4
  values: 838.7
  values: 869.9
  values: 1056.2
  values: 1096.4
  values: 1235.3
  values: 1304.8
  values: 1355
  values: 1384.3
  values: 1411.2
  values: 1427.7
  values: 1444.7
  values: 1460.4
  values: 1466.6
  values: 1504.1
  values: 1532.8
  values: 1540.7
  values: 1552
  values: 1561
  values: 1566.5
  values: 1572.5
  values: 1579
  values: 1584.2
  values: 1591.2
  values: 1636.7
  values: 1666.1
  values: 1702.1
  values: 1736.2
  values: 1757.5
  values: 1785.6
  values: 1808.6
  values: 1822
  values: 1841.8
uncertainty high95:
  variable name: uncertaintyHigh95
  units: yr BP
  t sid: WEBfa96b5b1
  has mean: 1795.4271
  has median: 2386.2
  has max: 3776.6
  has min: 15.2
  units original: yr BP
  datum: 1950
  summary statistic: quantile 97.5
  inferred material: age
  notes: NA; paleoData_summaryStatistic has been standardized; paleoData_inferredMaterial has been standardized; paleoData_datum has been standardized
  mean value12k: 1795.4271
  median res12k: 21.1
  values: 15.2
  values: 31.5
  values: 52.4
  values: 117
  values: 145.8
  values: 194.2
  values: 208.3
  values: 228.3
  values: 251.9
  values: 264.2
  values: 284
  values: 291.6
  values: 298.2
  values: 300.8
  values: 319.7
  values: 336.7
  values: 367.4
  values: 379.3
  values: 386
  values: 406
  values: 428.2
  values: 442.7
  values: 471.4
  values: 524.9
  values: 552.4
  values: 589.7
  values: 657.7
  values: 769.2
  values: 903.4
  values: 992.3
  values: 1082.4
  values: 1262.2
  values: 1269.4
  values: 1275
  values: 1276.4
  values: 1278.4
  values: 1293.1
  values: 1298.2
  values: 1390.6
  values: 1419
  values: 1456.8
  values: 1502.2
  values: 1560.4
  values: 1602.1
  values: 1653.8
  values: 1707.2
  values: 1727.9
  values: 1820.6
  values: 1845.3
  values: 1857.5
  values: 1887.3
  values: 1919.9
  values: 1949.8
  values: 1987.9
  values: 2030.4
  values: 2061.1
  values: 2114.4
  values: 2127.5
  values: 2135.7
  values: 2147
  values: 2157.1
  values: 2166.7
  values: 2183.7
  values: 2203.5
  values: 2216.9
  values: 2240.1

variable name: age
units: yr BP
t sid: WEB5f66e134
has mean: 1589.961
has median: 2180.4
has max: 3061.1
has min: -95.9
units original: yr BP
datum: 1950
is primary: true
notes: NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized
values: -95.9
values: -80.2
values: -64.6
values: -18.7
values: 12.6
values: 43.5
values: 73.5
values: 103.5
values: 133.8
values: 164.5
values: 195.1
values: 217.4
values: 226.9
values: 230
values: 249
values: 258.5
values: 274.2
values: 295.6
values: 304.1
values: 316.8
values: 329.6
values: 338.2
values: 353.2
values: 381
values: 430.8
values: 480.9
values: 531.4
values: 601.9
values: 682.4
values: 733
values: 782.9
values: 883.4
values: 968.7
values: 1028.2
values: 1053.9
values: 1070.9
values: 1182.2
values: 1207.9
values: 1310.3
values: 1356.5
values: 1402.5
values: 1441.5
values: 1480.7
values: 1506.9
values: 1539.6
values: 1572.4
values: 1585.6
values: 1651.2
values: 1686
values: 1698.8
values: 1724.9
values: 1746.5
values: 1763.8
values: 1785.3
values: 1811
values: 1828
values: 1853.5
values: 1878.4
values: 1895.3
values: 1916.4
values: 1937.5
values: 1954.6
values: 1980
values: 2005.5
values: 2022.5
values: 2047.9
values: 2064.7
values: 2071.6
values: 2078.8

variable name: CaO
units: percent
t sid: WEB77e5368a
has mean: 12.3579
has median: 12.125
has max: 22.901
has min: 5.985
median res12k: 21.1
mean value12k: 12.3579
values: 9.198
values: 10.182
values: 8.653
values: 10.253
values: 9.945
values: 10.626
values: 10.676
values: 10.075
values: 10.069
values: 10.101
values: 10.595
values: 12.154
values: 10.314
values: 10.288
values: 12.386
values: 11.011
values: 9.706
values: 10.284
values: 11.63
values: 11.639
values: 12.004
values: 10.126
values: 11.716
values: 10.716
values: 12.579
values: 11.792
values: 10.565
values: 14.419
values: 13.336
values: 13.573
values: 18.259
values: 18.516
values: 11.497
values: 16.08
values: 17.082
values: 20.537
values: 16.545
values: 22.901
values: 15.373
values: 5.985
values: 14.957
values: 11.541
values: 12.475
values: 13.397
values: 9.964
values: 8.873
values: 19.949
values: 14.968
values: 18.668
values: 15.539
values: 15.843
values: 17.249
values: 14.426
values: 14.464
values: 14.051
values: 12.7
values: 10.729
values: 10.853
values: 12.149
values: 12.214
values: 10.381
values: 15.14
values: 10.554
values: 12.543
values: 12.497
values: 11.641
values: 11.326
values: 12.122
values: 10.758
values: 13.671
values: 21.182

variable name: Al2O3
units: percent
t sid: WEBfa22dabc
has mean: 11.6663
has median: 13.156
has max: 14.519
has min: 7.046
proxy lumps: mineralogy
proxy lumps original: mineral
mean value12k: 11.6663
use in global temperature analysis: TRUE
median res12k: 21.1
notes: "We interpret the mass % of Al2O3 as an indicator of input of plagioclase and secondary clay minerals from the maar slope walls into the lake system. The flux of Al increases during wet conditions, when enhanced slopewash transports terrigenous material into the lake system"
proxy general: mineral
q cnotes: Length <4000yrs, but reasonable to include.
most recent compilations: HoloceneAbruptChange-0_10_0
proxy: Al2O3
QC certification: CR
values: 13.275
values: 13.644
values: 12.864
values: 13.385
values: 13.656
values: 12.656
values: 13.606
values: 14.227
values: 13.667
values: 14.332
values: 13.63
values: 10.216
values: 13.945
values: 14.224
values: 10.58
values: 13.876
values: 14.045
values: 11.479
values: 11.107
values: 11.453
values: 11.26
values: 13.21
values: 13.376
values: 11.906
values: 12.242
values: 11.725
values: 13.894
values: 8.695
values: 8.782
values: 8.129
values: 8.089
values: 8.648
values: 9.78
values: 7.046
values: 7.584
values: 8.125
values: 9.824
values: 8.168
values: 9.542
values: 13.962
values: 11.136
values: 10.617
values: 11.625
values: 8.339
values: 7.881
values: 12.435
values: 7.548
values: 8.541
values: 8.246
values: 11.824
values: 11.233
values: 8.984
values: 10.009
values: 10.15
values: 11.347
values: 10.277
values: 12.303
values: 13.088
values: 12.417
values: 10.762
values: 12.371
values: 10.037

variable name: Ti
units: count
t sid: WEBc4d3fb76
has mean: 3722.5932
has median: 3828.5
has max: 4462
has min: 2334
median res12k: 21.1
mean value12k: 3722.5932
values: 4086
values: 4190
values: 3911
values: 4150
values: 4305
values: 4117
values: 3949
values: 4273
values: 4389
values: 4332
values: 4006
values: 4365
values: 4225
values: 4012
values: 4057
values: 4335
values: 4336
values: 4010
values: 3862
values: 3836
values: 4101
values: 4164
values: 4050
values: 3619
values: 3708
values: 3753
values: 4034
values: 2550
values: 2755
values: 2475
values: 2338
values: 2705
values: 3075
values: 2512
values: 2709
values: 3134
values: 3143
values: 2334
values: 3032
values: 2461
values: 3451
values: 3607
values: 3579
values: 3255
values: 3361
values: 3932
values: 3200
values: 3207
values: 3296
values: 4131
values: 3839
values: 3799
values: 3818
values: 3503
values: 3558
values: 3817
values: 3934
values: 3963
values: 3874
values: 3948
values: 3588
values: 3822
values: 4317
values: 3624
values: 3523
values: 3835
values: 4076
values: 3971
values: 3843
values: 3596
values: 2728

variable name: Zr
units: count
t sid: WEB830b4789
has mean: 136.4449
has median: 139.95
has max: 160.6
has min: 95.2
median res12k: 21.1
mean value12k: 136.4449
values: 139.5
values: 147.2
values: 141.4
values: 146.7
values: 160.6
values: 146.8
values: 143.4
values: 153.4
values: 150.1
values: 151.4
values: 147.6
values: 147.1
values: 160.3
values: 158.5
values: 151.1
values: 141.7
values: 148
values: 140
values: 146.4
values: 135.8
values: 146.5
values: 148.8
values: 140.4
values: 139
values: 144.6
values: 104.1
values: 115.9
values: 100.7
values: 100.3
values: 109.3
values: 120.2
values: 95.2
values: 102.4
values: 115.5
values: 122.1
values: 104.6
values: 119.7
values: 145.1
values: 130.2
values: 121.5
values: 141.8
values: 122.4
values: 136.4
values: 116.6
values: 126.3
values: 114.2
values: 130.5
values: 112.6
values: 124
values: 132.3
values: 138.3
values: 135.9
values: 160
values: 145.7
values: 140.9
values: 146.6
values: 130.9
values: 145.9
values: 131.1
values: 138.7
values: 144.7
values: 132
values: 145.4
values: 135
values: 136
values: 97.9
values: 142.1
values: 144.9
values: 154.3
values: 142.3
values: 152.8

variable name: PC1
t sid: WEB08871912
units: unitless
has mean: -0.1717
has median: -1.2288
has max: 1.1438
has min: -1.4277
median res12k: 21.1
mean value12k: -0.1717
method: principal components
notes: NA; paleoData_method has been standardized
values: 0.1686
values: 0.1889
values: 0.1812
values: 0.3448
values: 0.361
values: -0.2131
values: 0.3535
values: 0.5024
values: 0.4532
values: 0.4032
values: 0.2338
values: -1.1236
values: 0.3446
values: 0.596
values: 1.1438
values: 0.4993
values: -0.0498
values: -0.7636
values: 0.1714
values: -0.7225
values: 0.3515
values: 0.9558
values: 0.2707
values: 0.045
values: -0.3642
values: 0.5351
values: -0.0276
values: -0.1711
values: 0.0998
values: -0.0338
values: -0.2464
values: -0.4331
values: -1.3305
values: -0.8967
values: -0.8158
values: -0.1636
values: -0.6004
values: -0.4195
values: 0.8034
values: 0.1712
values: -0.0599
values: -0.1166
values: -0.807
values: -0.9837
values: -0.155
values: -1.4277
values: -0.9841
values: -1.0394
values: 0.0911
values: -0.226
values: -1.3026
values: -1.0258
values: -0.9859
values: -0.0635
values: -1.0583
values: -0.5119
values: -0.3822
values: -0.1976
values: -1.0568
values: -0.2292
values: -1.061
values: 0.3389
values: -0.9103
values: -0.8136
values: 0.0506
values: 0.2475
values: -0.9416
values: 0.2978
values: -1.0688

measurement table:
  table name: chron1measurement1
  missing value: nan
  lab ID:
    variable name: labID
    t sid: WEBb051f4a3
    units: unitless
    number: 1
    values: #CAMS150476
    values: #CAMS166538
    values: #CAMS168422
    values: #CAMS168423
    values: #CAMS163698
    values: #CAMS168424
    values: #CAMS168426
    values: #CAMS168425
    values: #CAMS155155
    values: #CAMS150477
    values: #CAMS163697
    values: #CAMS150478
    values: #CAMS166539
    values: #CAMS155795
    values: #CAMS155154
  depth:
    variable name: depth
    units: cm
    t sid: WEBae9be590
    has mean: 488
    has median: 383
    has max: 1170
    has min: 206
    number: 2
    values: 206
    values: 245
    values: 304
    values: 342
    values: 353
    values: 383
    values: 400
    values: 423
    values: 551
    values: 612
    values: 750
    values: 1170
    values: 815
  age:
    variable name: age
    units: yr BP
    t sid: WEBb21a8388
    has mean: 3593.6667
    has median: 2035
    has max: 32420
    has min: 140
    number: 3
    values: 140
    values: 225
    values: 330
    values: 705
    values: 1370
    values: 1250
    values: 1180
    values: 1170
    values: 1495
    values: 1600
    values: 2195
    values: 2035
    values: 2330
    values: 5460
    values: 32420
  SD:
    variable name: SD
    units: yr
    t sid: WEB3e01d988
    has mean: 43
    has median: 30
    has max: 210
    has min: 25
    variable name original: error
    number: 4
    values: 35
    values: 30
    values: 25
    values: 210
  ninty five:
    variable name: nintyFive
    units: yr BP
    t sid: WEBa4e1d0c0
    has mean: 4022.8571
    has median: 1259.5
    has max: 35966
    has min: 5
    number: 5
    values: 5-281
    values: 0-422
    values: 307-473
    values: 561-691
    values: 1263-1340
    values: 1080-1274
    values: 983-1225
    values: 985-1179
    values: 1308-1506
    values: 1407-1555
    values: 2132-2315
    values: 1901-2108
    values: 2212-2436
    values: 6210-6302
    values: 35966-36637

version: 1.0.18
last version: 1.0.17
curator: nicholas
timestamp: 2023-08-10 22:40:11 UTC
changes:
  base metadata: originalDataUrl: 'https://www.ncei.noaa.gov/access/paleo-search/study/17735' has been replaced by 'https://doi.org/10.25921/27zc-fs42'
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_proxy: '((( mineralogy ))) deleteMe /// Al2O3' has been replaced by 'Al2O3'

version: 1.0.17
last version: 1.0.16
curator: nicholas
timestamp: 2023-07-05 00:32:08 UTC
changes:
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_proxy: 'Al2O3' has been replaced by '((( mineralogy ))) deleteMe /// Al2O3'

version: 1.0.16
last version: 1.0.15
curator: nicholas
timestamp: 2023-05-31 20:37:48 UTC
changes:
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_notes: '((( ((( "We interpret changes in ��18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) ��18O"; paleoData_units updated ))) "We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O" /// "We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O" ))) "We interpret changes in d18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefor…

version: 1.0.15
last version: 1.0.14
curator: nicholas
timestamp: 2023-05-30 15:48:00 UTC
changes:
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_notes: '"We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O"' has been replaced by '((( ((( "We interpret changes in ��18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) ��18O"; paleoData_units updated ))) "We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O" /// "We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipita…
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_QCCertification: 'CH' has been replaced by 'CH, CR'
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_notes: 'We interpret the mass % of Al2O3 as an indicator of input of plagioclase and secondary clay minerals from the maar slope walls into the lake system. The flux of Al increases during wet conditions, when enhanced slopewash transports terrigenous material into the lake system' has been replaced by '"We interpret the mass % of Al2O3 as an indicator of input of plagioclase and secondary clay minerals from the maar slope walls into the lake system. The flux of Al increases during wet conditions, when enhanced slopewash transports terrigenous material into the lake system"'
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_proxyGeneral: 'biophysical' has been replaced by 'mineral'
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_QCCertification: '' has been replaced by 'CR'
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_QCnotes: 'Length <4000yrs' has been replaced by 'Length <4000yrs, but reasonable to include.'
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_variableDetail: 'lake@surface' has been replaced by '@surface'
  paleo interpretation metadata: Al2O3 (WEBfa22dabc): interpretation1_direction: 'negative' has been replaced by 'positive'
  paleo interpretation metadata: Al2O3 (WEBfa22dabc): interpretation1_seasonality: '' has been replaced by 'Annual'
  paleo interpretation metadata: Al2O3 (WEBfa22dabc): interpretation1_seasonalityGeneral: '' has been replaced by 'Annual'

version: 1.0.14
last version: 1.0.13
curator: nicholas
timestamp: 2023-05-12 21:48:15 UTC
changes:
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_notes: '((( "We interpret changes in ��18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) ��18O"; paleoData_units updated ))) "We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O" /// "We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O"' has been replaced by '"We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation…

version: 1.0.13
last version: 1.0.12
curator: nicholas
timestamp: 2023-03-24 22:23:39 UTC
changes:
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_proxyGeneral: 'isotope' has been replaced by 'isotopic'
  paleo column metadata: d13C (WEB5d337c69): paleoData_proxyGeneral: 'isotope' has been replaced by 'isotopic'
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_proxy: '' has been replaced by 'Al2O3'
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_variable: 'P-E' has been replaced by 'effectivePrecipitation'
  paleo interpretation metadata: Al2O3 (WEBfa22dabc): interpretation1_variable: 'P-E' has been replaced by 'effectivePrecipitation'
  paleo interpretation metadata: Al2O3 (WEBfa22dabc): interpretation1_variableDetail: '' has been replaced by 'runoff@catchment'

version: 1.0.12
last version: 1.0.11
curator: nicholas
timestamp: 2023-02-13 23:36:40 UTC
changes:
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_notes: '"We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O"' has been replaced by '((( "We interpret changes in ��18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) ��18O"; paleoData_units updated ))) "We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O" /// "We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation…

version: 1.0.11
last version: 1.0.10
curator: nicholas
timestamp: 2023-02-10 14:32:50 UTC
changes:
  paleo interpretation metadata: uncertaintyLow95 (WEB0e036388): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: uncertaintyLow95 (WEBa76a84ed): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: uncertaintyHigh95 (WEBba2196c8): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: uncertaintyHigh95 (WEBfa96b5b1): interpretation1_scope: '' has been replaced by 'climate'

version: 1.0.10
last version: 1.0.9
curator: nicholas
timestamp: 2023-02-09 15:26:46 UTC
notes: Updated lipdverse database entry with a changed file.
changes:
  geographic metadata: geo_elevation: '' has been replaced by '2376'
  paleo column metadata: age (WEB00e0403b): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized'
  paleo column metadata: age (WEB00e0403b): paleoData_units: 'BP' has been replaced by 'yr BP'
  paleo column metadata: age (WEB00e0403b): paleoData_datum: '' has been replaced by '1950'
  paleo column metadata: age (WEB00e0403b): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo column metadata: PC1 (WEB08871912): paleoData_notes: '' has been replaced by 'NA; paleoData_method has been standardized'
  paleo column metadata: PC1 (WEB08871912): paleoData_method: '' has been replaced by 'principal components'
  paleo column metadata: uncertaintyLow95 (WEB0e036388): paleoData_notes: '' has been replaced by 'NA; paleoData_summaryStatistic has been standardized; paleoData_inferredMaterial has been standardized; paleoData_datum has been standardized'
  paleo column metadata: uncertaintyLow95 (WEB0e036388): paleoData_units: 'BP' has been replaced by 'yr BP'
  paleo column metadata: uncertaintyLow95 (WEB0e036388): paleoData_variableName: 'age_calBP95-' has been replaced by 'uncertaintyLow95'
  paleo column metadata: uncertaintyLow95 (WEB0e036388): paleoData_datum: '' has been replaced by '1950'
  paleo column metadata: uncertaintyLow95 (WEB0e036388): paleoData_inferredMaterial: '' has been replaced by 'age'
  paleo column metadata: uncertaintyLow95 (WEB0e036388): paleoData_summaryStatistic: '' has been replaced by 'quantile 2.5'
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_units: 'pemil' has been replaced by 'permil'
  paleo column metadata: depth (WEB5429e74b): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized'
  paleo column metadata: depth (WEB5429e74b): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo column metadata: age (WEB5f66e134): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized'
  paleo column metadata: age (WEB5f66e134): paleoData_units: 'BP' has been replaced by 'yr BP'
  paleo column metadata: age (WEB5f66e134): paleoData_datum: '' has been replaced by '1950'
  paleo column metadata: age (WEB5f66e134): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo column metadata: depth (WEB60c27894): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized'
  paleo column metadata: depth (WEB60c27894): paleoData_isPrimary: '' has been replaced by 'TRUE'
  paleo column metadata: uncertaintyLow95 (WEBa76a84ed): paleoData_notes: '' has been replaced by 'NA; paleoData_summaryStatistic has been standardized; paleoData_inferredMaterial has been standardized; paleoData_datum has been standardized'
  paleo column metadata: uncertaintyLow95 (WEBa76a84ed): paleoData_units: 'BP' has been replaced by 'yr BP'
  paleo column metadata: uncertaintyLow95 (WEBa76a84ed): paleoData_variableName: 'age_calBP95-' has been replaced by 'uncertaintyLow95'
  paleo column metadata: uncertaintyLow95 (WEBa76a84ed): paleoData_datum: '' has been replaced by '1950'
  paleo column metadata: uncertaintyLow95 (WEBa76a84ed): paleoData_inferredMaterial: '' has been replaced by 'age'
  paleo column metadata: uncertaintyLow95 (WEBa76a84ed): paleoData_summaryStatistic: '' has been replaced by 'quantile 2.5'
  paleo column metadata: uncertaintyHigh95 (WEBba2196c8): paleoData_notes: '' has been replaced by 'NA; paleoData_summaryStatistic has been standardized; paleoData_inferredMaterial has been standardized'
  paleo column metadata: uncertaintyHigh95 (WEBba2196c8): paleoData_variableName: 'age_calBP95+' has been replaced by 'uncertaintyHigh95'
  paleo column metadata: uncertaintyHigh95 (WEBba2196c8): paleoData_inferredMaterial: '' has been replaced by 'age'
  paleo column metadata: uncertaintyHigh95 (WEBba2196c8): paleoData_summaryStatistic: '' has been replaced by 'quantile 97.5'
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_proxy: 'mineralogy' has been replaced by ''
  paleo column metadata: Al2O3 (WEBfa22dabc): paleoData_variableName: 'AL2O3' has been replaced by 'Al2O3'
  paleo column metadata: uncertaintyHigh95 (WEBfa96b5b1): paleoData_notes: '' has been replaced by 'NA; paleoData_summaryStatistic has been standardized; paleoData_inferredMaterial has been standardized; paleoData_datum has been standardized'
  paleo column metadata: uncertaintyHigh95 (WEBfa96b5b1): paleoData_units: 'BP' has been replaced by 'yr BP'
  paleo column metadata: uncertaintyHigh95 (WEBfa96b5b1): paleoData_variableName: 'age_calBP95+' has been replaced by 'uncertaintyHigh95'
  paleo column metadata: uncertaintyHigh95 (WEBfa96b5b1): paleoData_datum: '' has been replaced by '1950'
  paleo column metadata: uncertaintyHigh95 (WEBfa96b5b1): paleoData_inferredMaterial: '' has been replaced by 'age'
  paleo column metadata: uncertaintyHigh95 (WEBfa96b5b1): paleoData_summaryStatistic: '' has been replaced by 'quantile 97.5'
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_seasonality: '1,2,3,4,5,6,7,8,9,10,11,12' has been replaced by 'Annual'
  paleo interpretation metadata: Al2O3 (WEBfa22dabc): interpretation1_variable: 'M' has been replaced by 'P-E'

version: 1.0.9
last version: 1.0.8
curator: nicholas
timestamp: 2022-07-28 17:26:56 UTC
changes:
  base metadata: originalDataUrl: '' has been replaced by 'https://www.ncei.noaa.gov/access/paleo-search/study/17735'
  geographic metadata: geo_elevation: '2376' has been replaced by ''

version: 1.0.8
last version: 1.0.7
curator: nicholas
timestamp: 2022-07-15 22:57:19 UTC
changes:
  paleo interpretation metadata: PC1 (WEB08871912): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: d13C (WEB5d337c69): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: CaO (WEB77e5368a): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: Zr (WEB830b4789): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: Ti (WEBc4d3fb76): interpretation1_scope: '' has been replaced by 'climate'

version: 1.0.7
last version: 1.0.6
curator: nicholas
timestamp: 2022-05-18 00:24:24 UTC
changes:
  paleo interpretation metadata: PC1 (WEB08871912): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_variableGroup: 'M' has been replaced by 'P-E'
  paleo interpretation metadata: d13C (WEB5d337c69): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: CaO (WEB77e5368a): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: Zr (WEB830b4789): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: Ti (WEBc4d3fb76): interpretation1_scope: 'climate' has been replaced by ''
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_mostRecentCompilations: '' has been replaced by 'HoloceneAbruptChange-0_10_0'
  paleo column metadata: AL2O3 (WEBfa22dabc): paleoData_mostRecentCompilations: '' has been replaced by 'HoloceneAbruptChange-0_10_0'

version: 1.0.6
last version: 1.0.5
curator: nicholas
timestamp: 2021-10-05 21:38:08 UTC
changes:
  geographic metadata: geo_gcmdLocation: '' has been replaced by 'North America>Mexico'

version: 1.0.5
last version: 1.0.4
curator: nick
timestamp: 2021-04-13 02:30:37 UTC
changes:
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_seasonality: '1,2,3,4,5,6,7,8,9,10,11,337' has been replaced by '1,2,3,4,5,6,7,8,9,10,11,12'

version: 1.0.4
last version: 1.0.3
curator: nick
timestamp: 2021-03-17 01:51:39 UTC
changes:
  paleo interpretation metadata: PC1 (WEB08871912): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_variable: 'M' has been replaced by 'P-E'
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_seasonality: '' has been replaced by '1,2,3,4,5,6,7,8,9,10,11,337'
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_seasonalityGeneral: '' has been replaced by 'Annual'
  paleo interpretation metadata: d18O (WEB4ef1e8b8): interpretation1_variableDetail: '' has been replaced by 'lake@surface'
  paleo interpretation metadata: d13C (WEB5d337c69): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: CaO (WEB77e5368a): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: Zr (WEB830b4789): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: Ti (WEBc4d3fb76): interpretation1_scope: '' has been replaced by 'climate'
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_notes: '' has been replaced by '"We interpret changes in δ18O as indicative of changes in the ratio of evaporation and precipitation (E/P). An increase in the evaporation relative to precipitation increases the 18O content of lakewater: H218O tends to evaporate more slowly than H216O, and the higher 16O content of atmospheric water vapor means that 16O is preferentially returned to the lake in precipitation (47). A higher (lower) ratio of evaporation to precipitation would therefore result in higher (lower) δ18O"'
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_units: 'unitless' has been replaced by 'pemil'
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_proxyDetail: '' has been replaced by 'authigenic calcite'
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_QCCertification: '' has been replaced by 'CH'
  paleo column metadata: AL2O3 (WEBfa22dabc): paleoData_QCnotes: '' has been replaced by 'Length <4000yrs'
  paleo calibration metadata: d18O (WEB4ef1e8b8): calibration_method: '' has been replaced by 'VPDB'

version: 1.0.3
last version: 1.0.2
curator: nick
timestamp: 2021-01-18 21:36:51 UTC
changes:
  paleo interpretation metadata: PC1 (WEB08871912): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: d13C (WEB5d337c69): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: CaO (WEB77e5368a): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: Zr (WEB830b4789): interpretation1_scope: 'climate' has been replaced by ''
  paleo interpretation metadata: Ti (WEBc4d3fb76): interpretation1_scope: 'climate' has been replaced by ''

version: 1.0.2
last version: 1.0.1
curator: nick
timestamp: 2021-01-15 18:46:31 UTC
changes:
  paleo interpretation metadata: PC1 (WEB08871912): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: d13C (WEB5d337c69): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: CaO (WEB77e5368a): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: Zr (WEB830b4789): interpretation1_scope: '' has been replaced by 'climate'
  paleo interpretation metadata: Ti (WEBc4d3fb76): interpretation1_scope: '' has been replaced by 'climate'

version: 1.0.1
last version: 1.0.0
curator: nick
timestamp: 2020-10-08 12:40:23 UTC
changes:
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_proxy: 'permil' has been replaced by 'd18O'
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_proxyLumps: 'permil' has been replaced by 'isotope'
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_proxyLumpsOriginal: '' has been replaced by 'd18O'
  paleo column metadata: d18O (WEB4ef1e8b8): paleoData_proxyGeneral: '' has been replaced by 'isotope'
  paleo column metadata: d13C (WEB5d337c69): paleoData_proxy: 'permil' has been replaced by 'd13C'
  paleo column metadata: d13C (WEB5d337c69): paleoData_proxyLumps: 'permil' has been replaced by 'isotope'
  paleo column metadata: d13C (WEB5d337c69): paleoData_proxyLumpsOriginal: '' has been replaced by 'd13C'
  paleo column metadata: d13C (WEB5d337c69): paleoData_proxyGeneral: '' has been replaced by 'isotope'
  paleo column metadata: AL2O3 (WEBfa22dabc): paleoData_proxy: 'mineral' has been replaced by 'mineralogy'
  paleo column metadata: AL2O3 (WEBfa22dabc): paleoData_proxyLumps: 'biophysical' has been replaced by 'mineralogy'
  paleo column metadata: AL2O3 (WEBfa22dabc): paleoData_notes: '' has been replaced by 'We interpret the mass % of Al2O3 as an indicator of input of plagioclase and secondary clay minerals from the maar slope walls into the lake system. The flux of Al increases during wet conditions, when enhanced slopewash transports terrigenous material into the lake system'
  paleo column metadata: AL2O3 (WEBfa22dabc): paleoData_proxyGeneral: '' has been replaced by 'biophysical'

version: 1.0.0
curator: nick
timestamp: 2020-08-21 15:36:30 UTC
notes: This marks the creation of the changelog, and marks the status of this dataset as of mid 2020
changes:
  setup: Changelog created

Cultural implications of late Holocene climate change in the Cuenca Oriental, Mexico
author:
  name: Bhattacharya, Tripti
year: 2015
journal: Proceedings of the National Academy of Sciences
issue: 6
volume: 112
doi: 10.1073/pnas.1405653112
publisher: Proceedings of the National Academy of Sciences
type: article-journal
pages: 1693-1698
abstract: There is currently no consensus on the importance of climate change in Mesoamerican prehistory. Some invoke drought as a causal factor in major cultural transitions, including the abandonment of many sites at 900 CE, while others conclude that cultural factors were more important. This lack of agreement reflects the fact that the history of climate change in many regions of Mesoamerica is poorly understood. We present paleolimnological evidence suggesting that climate change was important in the abandonment of Cantona between 900 CE and 1050 CE. At its peak, Cantona was one of the largest cities in pre-Columbian Mesoamerica, with a population of 90,000 inhabitants. The site is located in the Cuenca Oriental, a semiarid basin east of Mexico City. We developed a subcentennial reconstruction of regional climate from a nearby maar lake, Aljojuca. The modern climatology of the region suggests that sediments record changes in summer monsoonal precipitation. Elemental geochemistry (X-ray fluorescence) and δ18O from authigenic calcite indicate a centennial-scale arid interval between 500 CE and 1150 CE, overlaid on a long-term drying trend. Comparison of this record to Cantona’s chronology suggests that both the city’s peak population and its abandonment occurred during this arid period. The human response to climate change most likely resulted from the interplay of environmental and political factors. During earlier periods of Cantona’s history, increasing aridity and political unrest may have actually increased the city’s importance. However, by 1050 CE, this extended arid period, possibly combined with regional political change, contributed to the city’s abandonment.

agency: National Science Foundation
grant: BCS-13333370

agency: German Research Foundation
grant: DGE-1106400

longitude: -97.5338
latitude: 19.0915
elevation: 2376
site name: Laguna de Aljojuca
sub region: WNA
gcmd location: North America>Mexico