DOI: 10.1016/j.palaeo.2015.04.028
论文题名: Transgressive stratigraphic record and possible oscillations of late Pleistocene Lake Bonneville, Northern Hogup Mountains, Utah, U.S.A.
作者: Nelson D.T. ; Jewell P.W.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 432 起始页码: 58
结束页码: 67
语种: 英语
英文关键词: Great Basin
; Late Pleistocene
; Oscillation
; Paleoclimate
; Pluvial Lake
英文摘要: Distinct, mappable facies changes make the stratigraphic record of the shorezone of late Pleistocene Lake Bonneville the most robust indicator for past lake level oscillations. Unfortunately, clear stratigraphic evidence of transgressive and regressive deposits has been generally lacking. New stratigraphic and chronological data within the lacustrine shorezone sediments of the Hogup Mountains of northwestern Utah provide some of the best evidence yet for oscillations within the overall transgressive phase of the lake. This study documents two previously unknown oscillations, hereby named the Lower Hogup (~ 22 cal. ka) and Upper Hogup (~ 20.6 cal. ka) oscillations and provides further evidence for the previously proposed U2 oscillation (~ 21.3 cal. ka). The study suggests that the water level of the lake changed dramatically (up to 25% of the lake's total volume) during the transgressive phase (~ 30-15. cal. ka). With the additional oscillations documented in this study, there are seven proposed oscillatory events during the transgressive phase of the lake. These events likely correlate to rapid but short term regional climatic fluctuations during the broader climatic trends of the Last Glacial Maximum. However, it is still unknown what specific climatic drivers are causing these oscillations and if these events can be correlated to other global climatic events. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68901
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geology and Geography, University of North Carolina - Pembroke, 1 University RoadNC, United States; Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States
Recommended Citation:
Nelson D.T.,Jewell P.W.. Transgressive stratigraphic record and possible oscillations of late Pleistocene Lake Bonneville, Northern Hogup Mountains, Utah, U.S.A.[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,432