Mackay, Helen; Whelton, Helen; Reuther, Joshua; Potter, Ben; Edwards, Mary; Henderson, Andrew; Bull, Ian; Baldwin, Elinor; Clarke, Charlotte; Mayfield, Roseanna; Davies, Kimberley L; Van Hardenbroek, Maarten; Bigelow, Nancy H: Age determination (210Pb) of sediment core CHIS19 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993069 (dataset in review)
Abstract:
This dataset includes faecal lipid biomarker data from a lake sediment core from central Alaska and modern faecal biomarker reference data from Alaskan herbivores and omnivores/carnivores. The purpose of this study was to assess the sensitivity and validity of lacustrine faecal steroid reconstructions of human and animal presence within the landscape by combining analyses of modern faecal samples and a sediment archive from Chisholm Lake, Alaska, where historical and archaeological population changes are well documented. To achieve this, we analysed faecal steroids (stanols and bile acids), which are biomolecules that are deposited in the landscape from faeces of higher vertebrates. The lake sediment core was recovered from Chisholm Lake in the Tanana Valley of interior Alaska (64.302267 N, 146.687331 W) in September 2019 using a Bolivia corer. Lead-210 (210Pb) measurements were completed by Flett Research and radiocarbon (14C) measurements were completed by the Center for Applied Isotope Studies at the University of Georgia. We extracted lipid biomarkers from 15 core subsamples and 50 modern faecal reference samples and, following saponification and column chromatography, faecal biomarkers were identified and quantified by GC-MS at the University of Bristol.
Supplement to:
Mackay, Helen; Whelton, Helen; Reuther, Joshua; Potter, Ben; Edwards, Mary; Henderson, Andrew; Bull, Ian; Baldwin, Elinor; Clarke, Charlotte; Mayfield, Roseanna; Davies, Kimberley L; Van Hardenbroek, Maarten; Bigelow, Nancy H (in review): Testing the limits of lacustrine faecal lipid biomarkers as tools to document human and herbivore presence in Alaskan and Eastern Beringian landscapes. Quaternary Science Reviews
Funding:
European Research Council (ERC), grant/award no. FP/2007-2013: National Environmental Isotope Facility
Natural Environment Research Council (NERC), grant/award no. NEIF #2341.0321: Faecal steroid analysis of Chisholm Lake Alaska
Coverage:
Latitude: 64.302290 * Longitude: -146.686230
Date/Time Start: 2019-09-04T00:00:00 * Date/Time End: 2019-09-04T00:00:00
Minimum DEPTH, sediment/rock: 0.0025 m * Maximum DEPTH, sediment/rock: 0.0275 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample comment | Sample comment | Mackay, Helen | Age at Bottom of Extrapolated Section in Years (CRS Model Estimate) | ||
| 2 | Depth, sediment/rock, top/minimum | Depth sed top | m | Mackay, Helen | ||
| 3 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Mackay, Helen | ||
| 4 | DEPTH, sediment/rock | Depth sed | m | Mackay, Helen | Geocode | |
| 5 | Age, difference | Age diff | a | Mackay, Helen | ||
| 6 | Age | Age | a AD/CE | Mackay, Helen | ||
| 7 | AGE | Age | ka BP | Mackay, Helen | Geocode |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
30 data points