DOI: 10.1016/j.quascirev.2018.08.023
Scopus记录号: 2-s2.0-85052920538
论文题名: Increasing accuracy for the radiocarbon dating of sites occupied by the first Americans
作者: Devièse T. ; Stafford T.W. ; Jr. ; Waters M.R. ; Wathen C. ; Comeskey D. ; Becerra-Valdivia L. ; Higham T.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 198 起始页码: 171
结束页码: 180
语种: 英语
英文关键词: AMS radiocarbon dating
; Clovis complex
; Hydroxyproline
; Pre-clovis
; Preparative HPLC
; XAD resin
Scopus关键词: Biological materials preservation
; Chromatographic analysis
; High performance liquid chromatography
; Hydroxyproline
; Petroleum reservoir evaluation
; Resins
; AMS radiocarbon dating
; Clovis complex
; Pre-clovis
; Preparative HPLC
; XAD resin
; Column chromatography
; accuracy assessment
; archaeology
; colonization
; dating method
; fossil record
; genetic analysis
; liquid chromatography
; museum
; Pleistocene
; radiocarbon dating
; resin
; Canada
; Colorado
; Montana
; United States
; Wyoming
; Vertebrata
英文摘要: Genetic analysis of Paleoamerican human remains suggests that people first entered the Americas sometime between ∼14,000 and ∼16,000 years ago. Evaluation of these data requires unequivocal archaeological evidence in a solid geological context that is well dated. Accurately determining the age of late Pleistocene sites is thus crucial in explaining when and how humans colonized the Americas. There are, however, significant challenges to dating reliability, especially when vertebrate fossils (i.e. bones, teeth and ivory) are often the only datable materials preserved at sites. We re-dated vertebrate fossils associated with the North American butchering sites of Wally's Beach (Canada), La Prele [also known as Fetterman (Wyoming)], Lindsay (Montana), and Dent (Colorado). Our work illustrates the crucial importance of sample chemical preparation in completely removing contaminants derived from sediments or museum curation. Specifically, our work demonstrates that chromatographic methods, e.g. preparative High Performance Liquid Chromatography and column chromatography using XAD resins, are currently the only efficient methods for removing environmental and museum-derived contaminants. These advanced techniques yield demonstrably more accurate AMS 14C measurements that refine the ages of these four sites and thereby contribute to advancing our understanding of human dispersals across North America during the late Pleistocene. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112053
Appears in Collections: 气候减缓与适应
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作者单位: Oxford Radiocarbon Accelerator Unit, Research Lab for Archaeology and the History of Art, School of Archaeology, University of Oxford, 1-2 South Parks Road, Oxford, OX1 3TG, United Kingdom; Stafford Research LLC, 200 Acadia Avenue, Lafayette, CO 80026-1845, United States; Center for the Study of the First Americans, Department of Anthropology, Texas A&M University, College Station, TX 77843-4352, United States
Recommended Citation:
Devièse T.,Stafford T.W.,Jr.,et al. Increasing accuracy for the radiocarbon dating of sites occupied by the first Americans[J]. Quaternary Science Reviews,2018-01-01,198