DOI: 10.1016/j.quascirev.2018.09.030
Scopus记录号: 2-s2.0-85054448570
论文题名: Climate history of the southwestern United States based on Estancia Basin hydrologic variability from 69 to 10 ka
作者: Menking K.M. ; Polyak V.J. ; Anderson R.Y. ; Asmerom Y.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 200 起始页码: 237
结束页码: 252
语种: 英语
英文关键词: Bølling/Allerød
; Estancia basin
; Extrapolar climate reversal
; Hydrologic balance index
; North America
; Paleoclimatology
; Paleolimnology
; Quaternary
; Sediment mineralogy (incl. clay minerals)
; Younger Dryas
Scopus关键词: Climate change
; Isotopes
; Minerals
; Paleolimnology
; Sediments
; Estancia basin
; Extrapolar climate reversal
; Hydrologic balance
; North America
; Paleoclimatology
; Quaternary
; Younger Dryas
; Glacial geology
英文摘要: Newly acquired U–Th dates on gypsum sands contained within Pleistocene lake sediments allow us to extend the record of climatic change in the Estancia Basin of central New Mexico back to ∼69 ka from a previous limit of ∼29 ka. Using a hydrologic balance index (HBI) that reflects variations in sediment mineralogy and bedding characteristics, we find strong similarities to speleothem oxygen isotopic records for the southwestern United States as well as to isotopic variations in Greenland ice cores. Intervals of wetter climate in the Estancia Basin generally appear to correlate to colder conditions in the North Atlantic and conversely. The existence of a pronounced dry period from 18.1 to 17 ka matches in timing the Extrapolar Climate Reversal of Asmerom et al. (2017) at Fort Stanton cave in southern New Mexico and confirms a different origin for this stadial-like event. Furthermore, the new U–Th dates support the existing Estancia Basin interpretation of a dry Bølling/Allerød followed by a wet Younger Dryas, a result consistent with speleothem and wet meadow evidence from New Mexico and Arizona (Asmerom et al., 2010, 2017; Polyak et al., 2004; Hall et al., 2012; Wagner et al., 2010) but in conflict with an interpretation of speleothem evidence from central Texas (Feng et al., 2014). © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112009
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Science and Geography, Vassar College, Poughkeepsie, NY 12604, United States; Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, United States
Recommended Citation:
Menking K.M.,Polyak V.J.,Anderson R.Y.,et al. Climate history of the southwestern United States based on Estancia Basin hydrologic variability from 69 to 10 ka[J]. Quaternary Science Reviews,2018-01-01,200