| DOI: | 10.1016/j.quascirev.2015.12.009
|
| Scopus记录号: | 2-s2.0-84951860465
|
| 论文题名: | Record of glacial Lake Missoula floods in glacial Lake Columbia, Washington |
| 作者: | Hanson M.A.; Clague J.J.
|
| 刊名: | Quaternary Science Reviews
|
| ISSN: | 2773791
|
| 出版年: | 2016
|
| 卷: | 133 | | 起始页码: | 62
|
| 结束页码: | 76
|
| 语种: | 英语
|
| 英文关键词: | Glacial Lake Columbia
; Glacial Lake Missoula
; Outburst floods
; Sedimentology
; Stratigraphy
|
| Scopus关键词: | Floods
; Lakes
; Sedimentology
; Sediments
; Stratigraphy
; Columbia
; Flood sediments
; Glacial Lake Missoula
; Lake bottom sediments
; Marine oxygen isotopes
; Outburst floods
; Radiocarbon age
; Westward flow
; Glacial geology
|
| 英文摘要: | During the last glaciation (marine oxygen isotope stage 2), outburst floods from glacial Lake Missoula deposited diagnostic sediments within glacial Lake Columbia. Two dominant outburst flood lithofacies are present within glacial Lake Columbia deposits: a flood expansion bar facies and a finer-grained hyperpycnite facies. We conclude that the flood sediments have a glacial Lake Missoula source because: (1) current indicators indicate westward flow through the lake, and upvalley flow followed by downvalley flow in tributary valleys; (2) no flood sediments are found north of a certain point; (3) there is a dominance of Belt-Purcell Supergroup clasts in a flood expansion bar; and (4) some of the finer-grained beds have a pink colour, reflective of glacial Lake Missoula lake-bottom sediments. A new radiocarbon age of 13,400 ± 100 14C BP on plant detritus found below 37 flood beds helps constrain the timing of outburst flooding from glacial Lake Missoula. © 2015 Elsevier Ltd. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/59693
|
| Appears in Collections: | 过去全球变化的重建
|
|
There are no files associated with this item.
|
|
作者单位: | Saskatchewan Geological Survey, 1000-2103 11th Avenue, Regina, SK, Canada; Department of Earth Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada
|
| Recommended Citation: | |
Hanson M.A.,Clague J.J.. Record of glacial Lake Missoula floods in glacial Lake Columbia, Washington[J]. Quaternary Science Reviews,2016-01-01,133
|
|
|