Climate Change Data Portal
DOI | 10.1016/j.csr.2013.01.012 |
High resolution seismic study of the Holocene infill of the Elkhorn Slough, central California | |
Garcia-Garcia, Ana1,2; Levey, Matthew D.3; Watson, Elizabeth B.4 | |
发表日期 | 2013-03-01 |
ISSN | 0278-4343 |
卷号 | 55页码:108-118 |
英文摘要 | The seismic analysis of the sedimentary infill of the Elkhorn Slough, central California, reveals a succession of three main seismic units: U1, U2, U3, with their correspondent discontinuities d(2), d(3). These units are deposited over a paleorelief representing the channel location at least 8k years ago. The location of that paleochannel has not changed with time, but the geometry of the infilling sedimentary packages has done so through the years. Discontinuities d(2) and d(3) show a relic island or relative high in the center of the Slough that separated the sedimentation into two main small basins at least 3k years ago. There is evidence of erosion in the last two sedimentary units showing that the present erosive pattern began decades ago at minimum. We have correlated radiocarbon data of selected cores with the high resolution chirp profiles and reconstructed the infill for the Elkhorn Slough. In the most recent unit, the occurrence of numerous lateral accretion surfaces on both ends of the main channel is discussed within their environmental setting, tidal currents and the net ebb flux of the area. We have interpreted the presence of gas in the sediments of the slough, with a gas front located at the tops of units 2 and 3, which are discontinuities that reflect an effective seal for the gas. Our data shows no obvious evidence for seepage, although the shallow presence of some of the fronts points out the fragility of the environment in the present erosive conditions. (c) 2013 Elsevier Ltd. All rights reserved. |
英文关键词 | High-resolution seismic analysis;Marine transgression;Holocene;Elkhorn Slough;California |
语种 | 英语 |
WOS记录号 | WOS:000317943800010 |
来源期刊 | CONTINENTAL SHELF RESEARCH
![]() |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/59500 |
作者单位 | 1.Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA; 2.Monterey Peninsula Coll, Dept Earth Sci, Monterey, CA 93940 USA; 3.SeaSpatial Consulting, Santa Cruz, CA 95060 USA; 4.US EPA, ORD NHEERL, Atlantic Ecol Div, Narragansett, RI 02882 USA |
推荐引用方式 GB/T 7714 | Garcia-Garcia, Ana,Levey, Matthew D.,Watson, Elizabeth B.. High resolution seismic study of the Holocene infill of the Elkhorn Slough, central California[J]. 美国环保署,2013,55:108-118. |
APA | Garcia-Garcia, Ana,Levey, Matthew D.,&Watson, Elizabeth B..(2013).High resolution seismic study of the Holocene infill of the Elkhorn Slough, central California.CONTINENTAL SHELF RESEARCH,55,108-118. |
MLA | Garcia-Garcia, Ana,et al."High resolution seismic study of the Holocene infill of the Elkhorn Slough, central California".CONTINENTAL SHELF RESEARCH 55(2013):108-118. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。