Kiel III carbonate preparation device interfaced with a Finnigan MAT 252 mass spectrometer
integrationTime "units" given but no time (GF)
; archiveType changed - was originally Lake sediment (LS)
About 10 to 15 specimens were selected from each 1cm sample. Each shell was cracked open and sonicated in methanol to remove degreesnegrained particles that degreesll the chambers. Cleaned shell fragments were treated with 15% H2O2 for 1 hour to remove organic matter, dried, and ground to a homogenous powder.
The d18O record from Chichancanab generally supports our E/P inferences based on the S record
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)
was this date used in the age modelpermil
year (MATae2887b82a): interpretation4_scope: '' has been replaced by 'climate'
depth (MATc97475c57e): interpretation4_scope: '' has been replaced by 'climate'
d18O (LS01HOCH): paleoData_isPrimary: '' has been replaced by 'FALSE'
d18O (LS01HOCH): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
year (MATae2887b82a): paleoData_isPrimary: '' has been replaced by 'TRUE'
year (MATae2887b82a): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'
depth (MATc97475c57e): paleoData_isPrimary: '' has been replaced by 'FALSE'
depth (MATc97475c57e): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
d18O (LS01HOCH): interpretation2_basis: 'The d18O record from Chichancanab generally supports our E/P inferences based on the S record' has been replaced by ''
d18O (LS01HOCH): interpretation2_direction: 'negative' has been replaced by ''
d18O (LS01HOCH): interpretation2_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS01HOCH): interpretation2_integrationTimeUnits: 'years' has been replaced by ''
d18O (LS01HOCH): interpretation2_rank: '1' has been replaced by ''
d18O (LS01HOCH): interpretation2_scope: 'isotope' has been replaced by 'climate'
d18O (LS01HOCH): interpretation2_variable: 'effectivePrecipitation' has been replaced by ''
d18O (LS01HOCH): interpretation2_variableGroup: 'EffectiveMoisture' has been replaced by ''
d18O (LS01HOCH): interpretation2_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS01HOCH): interpretation2_variableGroupOriginal: 'P_E' has been replaced by ''
d18O (LS01HOCH): interpretation3_direction: 'negative' has been replaced by ''
d18O (LS01HOCH): interpretation3_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS01HOCH): interpretation3_integrationTimeUnits: 'years' has been replaced by ''
d18O (LS01HOCH): interpretation3_rank: '2' has been replaced by ''
d18O (LS01HOCH): interpretation3_scope: 'isotope' has been replaced by 'climate'
d18O (LS01HOCH): interpretation3_variable: 'temperature' has been replaced by ''
d18O (LS01HOCH): interpretation3_variableGroup: 'Temperature' has been replaced by ''
d18O (LS01HOCH): interpretation3_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS01HOCH): interpretation3_variableGroupOriginal: 'T_water' has been replaced by ''
d18O (LS01HOCH): interpretation4_basis: '' has been replaced by 'The d18O record from Chichancanab generally supports our E/P inferences based on the S record'
d18O (LS01HOCH): interpretation4_direction: '' has been replaced by 'negative'
d18O (LS01HOCH): interpretation4_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS01HOCH): interpretation4_integrationTimeUnits: '' has been replaced by 'years'
d18O (LS01HOCH): interpretation4_rank: '' has been replaced by '1'
d18O (LS01HOCH): interpretation4_scope: '' has been replaced by 'isotope'
d18O (LS01HOCH): interpretation4_variable: '' has been replaced by 'effectivePrecipitation'
d18O (LS01HOCH): interpretation4_variableGroup: '' has been replaced by 'EffectiveMoisture'
d18O (LS01HOCH): interpretation4_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS01HOCH): interpretation4_variableGroupOriginal: '' has been replaced by 'P_E'
d18O (LS01HOCH): interpretation5_direction: '' has been replaced by 'negative'
d18O (LS01HOCH): interpretation5_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS01HOCH): interpretation5_integrationTimeUnits: '' has been replaced by 'years'
d18O (LS01HOCH): interpretation5_rank: '' has been replaced by '2'
d18O (LS01HOCH): interpretation5_scope: '' has been replaced by 'isotope'
d18O (LS01HOCH): interpretation5_variable: '' has been replaced by 'temperature'
d18O (LS01HOCH): interpretation5_variableGroup: '' has been replaced by 'Temperature'
d18O (LS01HOCH): interpretation5_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS01HOCH): interpretation5_variableGroupOriginal: '' has been replaced by 'T_water'
d18O (LS01HOCH): interpretation6_scope: '' has been replaced by 'isotope'
year (MATae2887b82a): interpretation1_scope: '' has been replaced by 'climate'
year (MATae2887b82a): interpretation2_scope: '' has been replaced by 'climate'
year (MATae2887b82a): interpretation3_scope: '' has been replaced by 'climate'
depth (MATc97475c57e): interpretation1_scope: '' has been replaced by 'climate'
depth (MATc97475c57e): interpretation2_scope: '' has been replaced by 'climate'
depth (MATc97475c57e): interpretation3_scope: '' has been replaced by 'climate'
Updated lipdverse database entry with a changed file.
d18O (LS01HOCH): interpretation1_variable: 'E/P' has been replaced by 'effectivePrecipitation'
d18O (LS01HOCH): interpretation2_variable: 'P_E' has been replaced by 'effectivePrecipitation'
d18O (LS01HOCH): interpretation3_variable: 'T_water' has been replaced by 'temperature'
Changes made as part of LiPDverse vocabulary standardization process
d18O (LS01HOCH): paleoData_longName: '' has been replaced by 'AD'
year (MATae2887b82a): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MATae2887b82a): paleoData_longName: '' has been replaced by 'AD'
depth (MATc97475c57e): paleoData_longName: '' has been replaced by 'AD'
Hodell, D. A., Brenner, M., Curtis, J., Guilderson, T.
Hodell, D. A.: Solar Forcing of Drought Frequency in the Maya Lowlands, Science, 292(5520), 1367–1370, doi:10.1126/science.1057759, 2001.
American Association for the Advancement of Science (AAAS)
Solar Forcing of Drought Frequency in the Maya Lowlands