DOI: 10.1016/j.quascirev.2014.02.006
Scopus记录号: 2-s2.0-84895960719
论文题名: The Kankakee Torrent and other large meltwater flooding events during the last deglaciation, Illinois, USA
作者: Curry B.B. ; Hajic E.R. ; Clark J.A. ; Befus K.M. ; Carrell J.E. ; Brown S.E.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 90 起始页码: 22
结束页码: 36
语种: 英语
英文关键词: Deglaciation
; Illinois
; Kankakee torrent
; Meltwater
Scopus关键词: Floods
; Lakes
; Landforms
; Plants (botany)
; Sediments
; Bedrock surfaces
; Channel complex
; Deglaciations
; Geomorphic evidence
; Illinois
; Kankakee torrent
; Last deglaciation
; Meltwater
; Loading
; bedrock
; boulder
; deglaciation
; flooding
; geomorphology
; last deglaciation
; meltwater
; moraine
; overland flow
; radiocarbon dating
; sediment core
; torrent
; Illinois
; Illinois River
; Illinois Valley
; Kankakee County
; United States
英文摘要: Evidence of the Kankakee Torrent (Ekblaw and Athy, 1925) includes boulder bars formed on a scoured bedrock surface west of Kankakee, Illinois, and overflow channels that connect several moraine-dammed basins (Wauponsee, Watseka, and Pontiac; Willman and Payne, 1942). Geomorphic evidence of a large scale flood event in the Illinois Valley includes features such as erosional residuals (Hajic, 1990). Theageof the Kankakee Torrent is about 19,000calyrBP based on the pooled mean of four radiocarbonagesof tundra plant stems and leaves from the Oswego channel complex (median probability=18,930calyrBP, σ1 range, 18,870-18,970calyrBP). Analysis of recently obtained sediment cores from the middle Illinois River valley near Havana, Illinois, has revealed the bedrock surface is defended by a mantle of bouldery debris buried by 15m of mostly slackwater lake sediment. Radiocarbon ages of needles archived inthelake sediment reveal evidence for an early lake phase that post-dates the Kankakee Torrent (18,030-17,530calyrBP) and a later lake phase (15,690-13,040calyrBP). The radiocarbon ages indicate that the deeply buried bouldery rubble was deposited by the Kankakee Torrent. Consideration of isostasy indicates that the earlier lake phase at Havana may have been associated with downward flexure of land surface in response to glacier loading. The younger lake phase was caused in part by deposition of a sediment dam (the Savanna-Deer Plain terrace) at the mouth of the Illinois River. The lake shoaled due to passing of the isostatic forebulge across the area. © 2014 . Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60339
Appears in Collections: 过去全球变化的重建
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作者单位: Illinois State Geological Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL 61820, United States; Illinois State Museum, Research and Collections Center, 1011 East Ash Street, Springfield, IL 62703, United States; Geology and Environmental Science, Wheaton College, Wheaton, IL 60187-5593, United States; University of Texas at Austin, Department of Geological Sciences, Austin, TX 78712-1722, United States
Recommended Citation:
Curry B.B.,Hajic E.R.,Clark J.A.,et al. The Kankakee Torrent and other large meltwater flooding events during the last deglaciation, Illinois, USA[J]. Quaternary Science Reviews,2014-01-01,90