VG Isocarb and triple-collector VG Prism II mass spectrometer
; archiveType changed - was originally Lake sediment (LS)
DK: 18O on ostracodes. Another time series is published on gastropods. The two are very similar.
Individual gastropod shells were also picked from every 1-cm interval for stable isotopic analysis. Single specimens of Pyrgophorus coronatus were separated from the sieved 1400 mm fraction under 101 magnification. Gastropod shells were soaked in 15% H2O2 to remove organic matter cleaned and sonicated in deionized water, and ultimately rinsed with methanol before drying. Individual gastropod shells were ground to a fine powder using a mortar and pestle
If the d18O signal is controlled mainly by E/P, then the variation in d18O during the late Holocene suggests repeated multi-decadal wet/dry cycles that are superimposed upon longer-term, millennial patterns of abundant rainfall and drought.
This is demonstrated for Lake Punta Laguna by comparing the measured d18O values of lakewater, rainfall, and groundwater. Local groundwater and rainwater have depleted d18O values of 03.91 and 03.92?, respectively, whereas the lakewater is significantly enriched, averaging 0.93? (Table 3)
fraction of modern 14C activity uncertainty
210Pb, 239+240Pu or 137Cs activity uncertainty
Y if supported 210Pb activity, N if unsupported 210Pb activity
model used to convert 210Pb activity to age (e.g., constant rate of supply)
years before 1950 (calibrated age, or ages that dont need calibration)
age (MAT5cafe1209d): interpretation5_scope: '' has been replaced by 'climate'
depth (MAT96f4f77e8e): interpretation5_scope: '' has been replaced by 'climate'
Updated lipdverse database entry with a changed file.
age (MAT5cafe1209d): paleoData_units: 'yr AD' has been replaced by 'yr BP'
age (MAT5cafe1209d): paleoData_variableName: 'year' has been replaced by 'age'
year (MAT5cafe1209d): interpretation4_scope: '' has been replaced by 'climate'
depth (MAT96f4f77e8e): interpretation4_scope: '' has been replaced by 'climate'
d18O (LS96CUPUa): paleoData_isPrimary: '' has been replaced by 'FALSE'
d18O (LS96CUPUa): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
d18O (LS96CUPUb): paleoData_isPrimary: '' has been replaced by 'FALSE'
d18O (LS96CUPUb): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
year (MAT5cafe1209d): paleoData_isPrimary: '' has been replaced by 'TRUE'
year (MAT5cafe1209d): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'
depth (MAT96f4f77e8e): paleoData_isPrimary: '' has been replaced by 'FALSE'
depth (MAT96f4f77e8e): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
d18O (LS96CUPUa): interpretation2_basis: 'This is demonstrated for Lake Punta Laguna by comparing the measured d18O values of lakewater, rainfall, and groundwater. Local groundwater and rainwater have depleted d18O values of 03.91 and 03.92?, respectively, whereas the lakewater is significantly enriched, averaging 0.93? (Table 3)' has been replaced by ''
d18O (LS96CUPUa): interpretation2_direction: 'negative' has been replaced by ''
d18O (LS96CUPUa): interpretation2_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS96CUPUa): interpretation2_integrationTime: '5' has been replaced by ''
d18O (LS96CUPUa): interpretation2_integrationTimeUncertaintyType: 'chronology' has been replaced by ''
d18O (LS96CUPUa): interpretation2_integrationTimeUnits: 'years' has been replaced by ''
d18O (LS96CUPUa): interpretation2_scope: 'isotope' has been replaced by 'climate'
d18O (LS96CUPUa): interpretation2_variable: 'effectivePrecipitation' has been replaced by ''
d18O (LS96CUPUa): interpretation2_variableGroup: 'EffectiveMoisture' has been replaced by ''
d18O (LS96CUPUa): interpretation2_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS96CUPUa): interpretation2_variableGroupOriginal: 'P_E' has been replaced by ''
d18O (LS96CUPUa): interpretation3_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS96CUPUa): interpretation3_integrationTime: '5' has been replaced by ''
d18O (LS96CUPUa): interpretation3_integrationTimeUncertaintyType: 'chronology' has been replaced by ''
d18O (LS96CUPUa): interpretation3_integrationTimeUnits: 'years' has been replaced by ''
d18O (LS96CUPUa): interpretation3_rank: '2' has been replaced by ''
d18O (LS96CUPUa): interpretation3_scope: 'isotope' has been replaced by 'climate'
d18O (LS96CUPUa): interpretation3_variable: 'temperature' has been replaced by ''
d18O (LS96CUPUa): interpretation3_variableGroup: 'Temperature' has been replaced by ''
d18O (LS96CUPUa): interpretation3_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS96CUPUa): interpretation3_variableGroupOriginal: 'T' has been replaced by ''
d18O (LS96CUPUa): interpretation3_variableOriginal: 'temperature' has been replaced by ''
d18O (LS96CUPUa): interpretation4_basis: '' has been replaced by 'This is demonstrated for Lake Punta Laguna by comparing the measured d18O values of lakewater, rainfall, and groundwater. Local groundwater and rainwater have depleted d18O values of 03.91 and 03.92?, respectively, whereas the lakewater is significantly enriched, averaging 0.93? (Table 3)'
d18O (LS96CUPUa): interpretation4_direction: '' has been replaced by 'negative'
d18O (LS96CUPUa): interpretation4_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS96CUPUa): interpretation4_integrationTime: '' has been replaced by '5'
d18O (LS96CUPUa): interpretation4_integrationTimeUncertaintyType: '' has been replaced by 'chronology'
d18O (LS96CUPUa): interpretation4_integrationTimeUnits: '' has been replaced by 'years'
d18O (LS96CUPUa): interpretation4_scope: '' has been replaced by 'isotope'
d18O (LS96CUPUa): interpretation4_variable: '' has been replaced by 'effectivePrecipitation'
d18O (LS96CUPUa): interpretation4_variableGroup: '' has been replaced by 'EffectiveMoisture'
d18O (LS96CUPUa): interpretation4_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS96CUPUa): interpretation4_variableGroupOriginal: '' has been replaced by 'P_E'
d18O (LS96CUPUa): interpretation5_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS96CUPUa): interpretation5_integrationTime: '' has been replaced by '5'
d18O (LS96CUPUa): interpretation5_integrationTimeUncertaintyType: '' has been replaced by 'chronology'
d18O (LS96CUPUa): interpretation5_integrationTimeUnits: '' has been replaced by 'years'
d18O (LS96CUPUa): interpretation5_rank: '' has been replaced by '2'
d18O (LS96CUPUa): interpretation5_scope: '' has been replaced by 'isotope'
d18O (LS96CUPUa): interpretation5_variable: '' has been replaced by 'temperature'
d18O (LS96CUPUa): interpretation5_variableGroup: '' has been replaced by 'Temperature'
d18O (LS96CUPUa): interpretation5_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS96CUPUa): interpretation5_variableGroupOriginal: '' has been replaced by 'T'
d18O (LS96CUPUa): interpretation5_variableOriginal: '' has been replaced by 'temperature'
d18O (LS96CUPUa): interpretation6_scope: '' has been replaced by 'isotope'
d18O (LS96CUPUb): interpretation2_basis: 'This is demonstrated for Lake Punta Laguna by comparing the measured d18O values of lakewater, rainfall, and groundwater. Local groundwater and rainwater have depleted d18O values of 03.91 and 03.92?, respectively, whereas the lakewater is significantly enriched, averaging 0.93? (Table 3)' has been replaced by ''
d18O (LS96CUPUb): interpretation2_direction: 'negative' has been replaced by ''
d18O (LS96CUPUb): interpretation2_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS96CUPUb): interpretation2_integrationTime: '5' has been replaced by ''
d18O (LS96CUPUb): interpretation2_integrationTimeUncertaintyType: 'chronology' has been replaced by ''
d18O (LS96CUPUb): interpretation2_integrationTimeUnits: 'years' has been replaced by ''
d18O (LS96CUPUb): interpretation2_rank: '1' has been replaced by ''
d18O (LS96CUPUb): interpretation2_scope: 'isotope' has been replaced by 'climate'
d18O (LS96CUPUb): interpretation2_variable: 'effectivePrecipitation' has been replaced by ''
d18O (LS96CUPUb): interpretation2_variableGroup: 'EffectiveMoisture' has been replaced by ''
d18O (LS96CUPUb): interpretation2_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS96CUPUb): interpretation2_variableGroupOriginal: 'P_E' has been replaced by ''
d18O (LS96CUPUb): interpretation3_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS96CUPUb): interpretation3_integrationTime: '5' has been replaced by ''
d18O (LS96CUPUb): interpretation3_integrationTimeUncertaintyType: 'chronology' has been replaced by ''
d18O (LS96CUPUb): interpretation3_integrationTimeUnits: 'years' has been replaced by ''
d18O (LS96CUPUb): interpretation3_rank: '2' has been replaced by ''
d18O (LS96CUPUb): interpretation3_scope: 'isotope' has been replaced by 'climate'
d18O (LS96CUPUb): interpretation3_variable: 'temperature' has been replaced by ''
d18O (LS96CUPUb): interpretation3_variableGroup: 'Temperature' has been replaced by ''
d18O (LS96CUPUb): interpretation3_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS96CUPUb): interpretation3_variableGroupOriginal: 'T' has been replaced by ''
d18O (LS96CUPUb): interpretation3_variableOriginal: 'temperature' has been replaced by ''
d18O (LS96CUPUb): interpretation4_basis: '' has been replaced by 'This is demonstrated for Lake Punta Laguna by comparing the measured d18O values of lakewater, rainfall, and groundwater. Local groundwater and rainwater have depleted d18O values of 03.91 and 03.92?, respectively, whereas the lakewater is significantly enriched, averaging 0.93? (Table 3)'
d18O (LS96CUPUb): interpretation4_direction: '' has been replaced by 'negative'
d18O (LS96CUPUb): interpretation4_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS96CUPUb): interpretation4_integrationTime: '' has been replaced by '5'
d18O (LS96CUPUb): interpretation4_integrationTimeUncertaintyType: '' has been replaced by 'chronology'
d18O (LS96CUPUb): interpretation4_integrationTimeUnits: '' has been replaced by 'years'
d18O (LS96CUPUb): interpretation4_rank: '' has been replaced by '1'
d18O (LS96CUPUb): interpretation4_scope: '' has been replaced by 'isotope'
d18O (LS96CUPUb): interpretation4_variable: '' has been replaced by 'effectivePrecipitation'
d18O (LS96CUPUb): interpretation4_variableGroup: '' has been replaced by 'EffectiveMoisture'
d18O (LS96CUPUb): interpretation4_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS96CUPUb): interpretation4_variableGroupOriginal: '' has been replaced by 'P_E'
d18O (LS96CUPUb): interpretation5_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS96CUPUb): interpretation5_integrationTime: '' has been replaced by '5'
d18O (LS96CUPUb): interpretation5_integrationTimeUncertaintyType: '' has been replaced by 'chronology'
d18O (LS96CUPUb): interpretation5_integrationTimeUnits: '' has been replaced by 'years'
d18O (LS96CUPUb): interpretation5_rank: '' has been replaced by '2'
d18O (LS96CUPUb): interpretation5_scope: '' has been replaced by 'isotope'
d18O (LS96CUPUb): interpretation5_variable: '' has been replaced by 'temperature'
d18O (LS96CUPUb): interpretation5_variableGroup: '' has been replaced by 'Temperature'
d18O (LS96CUPUb): interpretation5_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS96CUPUb): interpretation5_variableGroupOriginal: '' has been replaced by 'T'
d18O (LS96CUPUb): interpretation5_variableOriginal: '' has been replaced by 'temperature'
d18O (LS96CUPUb): interpretation6_scope: '' has been replaced by 'isotope'
year (MAT5cafe1209d): interpretation1_scope: '' has been replaced by 'climate'
year (MAT5cafe1209d): interpretation2_scope: '' has been replaced by 'climate'
year (MAT5cafe1209d): interpretation3_scope: '' has been replaced by 'climate'
depth (MAT96f4f77e8e): interpretation1_scope: '' has been replaced by 'climate'
depth (MAT96f4f77e8e): interpretation2_scope: '' has been replaced by 'climate'
depth (MAT96f4f77e8e): interpretation3_scope: '' has been replaced by 'climate'
d18O (LS96CUPUa): interpretation1_direction: '' has been replaced by 'negative'
d18O (LS96CUPUa): interpretation1_variable: 'E/P' has been replaced by 'effectivePrecipitation'
d18O (LS96CUPUa): interpretation2_variable: 'P_E' has been replaced by 'effectivePrecipitation'
d18O (LS96CUPUa): interpretation3_variable: 'T' has been replaced by 'temperature'
d18O (LS96CUPUb): interpretation1_direction: 'increase' has been replaced by 'negative'
d18O (LS96CUPUb): interpretation1_variable: 'E/P' has been replaced by 'effectivePrecipitation'
d18O (LS96CUPUb): interpretation2_variable: 'P_E' has been replaced by 'effectivePrecipitation'
d18O (LS96CUPUb): interpretation3_variable: 'T' has been replaced by 'temperature'
Changes made as part of LiPDverse vocabulary standardization process
d18O (LS96CUPUa): paleoData_longName: '' has been replaced by 'AD'
d18O (LS96CUPUb): paleoData_longName: '' has been replaced by 'AD'
year (MAT5cafe1209d): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MAT5cafe1209d): paleoData_longName: '' has been replaced by 'AD'
depth (MAT96f4f77e8e): paleoData_longName: '' has been replaced by 'AD'
Curtis, Jason H. , Hodell, David A. , Brenner, Mark
Curtis, J. H., Hodell, D. A. and Brenner, M.: Climate Variability on the Yucatan Peninsula (Mexico) during the Past 3500 Years, and Implications for Maya Cultural Evolution, Quaternary Research, 46(1), 37–47, doi:10.1006/qres.1996.0042, 1996.
Climate Variability on the Yucatan Peninsula (Mexico) during the Past 3500 Years, and Implications for Maya Cultural Evolution