Late quaternary deglaciation and sea-level history of eastern Juan de Fuca Strait, Cascadia

doi:10.1016/j.quaint.2004.01.021

	Late quaternary deglaciation and sea-level history of eastern Juan de Fuca Strait, Cascadia
	Mosher, DC ; Hewitt, AT
刊名	QUATERNARY INTERNATIONAL
	2004
卷号	121 页码:23-39
ISSN号	1040-6182
DOI	10.1016/j.quaint.2004.01.021
英文摘要	Eastern Juan de Fuca Strait of southwestern British Columbia/northwestern Washington State is near the western and southern terminus of Late Wisconsinan glaciation in North America. Seismic-reflection profiles, bathymetric data, sediment core data and 41 new radiocarbon dates provide insight into the history of ice retreat and sea-level change in the eastern portion of the strait. The retreating ice margin appears to have passed through the area between 14,460 +/- 200 and 13,595 +/- 145 C-14 yr. Glacial marine sediments date between 12,889 +/- 50 and 11, 110 +/- 50 C-14 yr BP. Wave-eroded unconformities, drowned prograded deposits and a partially isolated low-stand basin are evidence attributed to low-stand sea levels following deglaciation and five new control points on the local eustatic sea level curve are assigned based on radiocarbon dating of these features. Sea-level change was rapid: from + 75 in immediately after deglaciation to possibly -60.4 in at 9920 +/- 60 C-14 yr BP. After this time, gradual sea level transgression took place. Relative sea level reached its approximate present position by 5470 +/- 115 C-14 yr BP. Since then, relative sea level has remained constant suggesting eustatic rise is balanced by crustal uplift. (C) 2004 Elsevier Ltd and INQUA. All rights reserved.
WOS关键词	SOUTHWESTERN VANCOUVER ISLAND ; SOUTHERN BRITISH-COLUMBIA ; CORDILLERAN ICE-SHEET ; PROGRAM LEG 169S ; SAANICH INLET ; CONTINENTAL-SHELF ; PACIFIC NORTHWEST ; GLACIAL MAXIMUM ; WASHINGTON ; HOLOCENE
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000222222900004
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26023]
专题	自然资源部第一海洋研究所
通讯作者	Mosher, DC
作者单位	1.Geol Survey Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada 2.Univ New Hampshire, Ctr Coastal & Ocean Mapping, Joint Hydrog Ctr, Durham, NH 03824 USA
推荐引用方式 GB/T 7714	Mosher, DC,Hewitt, AT. Late quaternary deglaciation and sea-level history of eastern Juan de Fuca Strait, Cascadia[J]. QUATERNARY INTERNATIONAL,2004,121:23-39.
APA	Mosher, DC,&Hewitt, AT.(2004).Late quaternary deglaciation and sea-level history of eastern Juan de Fuca Strait, Cascadia.QUATERNARY INTERNATIONAL,121,23-39.
MLA	Mosher, DC,et al."Late quaternary deglaciation and sea-level history of eastern Juan de Fuca Strait, Cascadia".QUATERNARY INTERNATIONAL 121(2004):23-39.