Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31959.1 |
Autopsy of a reservoir: Facies architecture in a multidam system, Elwha River, Washington, USA | |
Stratton, Laurel E.1,3; Grant, Gordon E.2 | |
2019-11-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2019 |
卷号 | 131页码:1794-1822 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The 2011-2014 removal of two large dams on the Elwha River, Washington State, the largest dam removal yet completed globally, created extensive cutbank exposures of reservoir sediments, allowing the first characterization of the facies architecture of sediments through direct observation in reservoirs worldwide and providing an unparalleled opportunity to assess the relationship between environmental influences, such as changes in sediment supply, and their expression in the stratigraphic record. Using a combination of facies description from observation of 49 measured sections and >100 exposures and analysis of digital elevation models and historic aerial photographs, we delineated the characteristic depositional zones of each reservoir and mapped the evolution of the subaerial delta over the life span of the reservoir. Former Lake Mills, the younger, upstream reservoir, was characterized by a tripartite, subaerial Gilbert-style delta that prograded >1 km into the main reservoir from 1927 to 2011. Sediments were composed of coarse-grained topset beds, steeply dipping foreset beds, and a fine-grained, gently dipping prodelta. While individual event horizons were discernible in fine-grained sediments of former Lake Mills, their number and spacing did not correspond to known drawdown or flood events. Former Lake Aldwell, impounded from 1913 to 2011, was initially defined by the rapid progradation of a Gilbert-style, subaerial delta prior to the upstream completion of Glines Canyon Dam. However, the 1927 closure of Glines Canyon Dam upstream caused the delta to evolve to a fine-grained, mouth-bar-type delta indicative of low, finer-grained sediment. This evolution, combined with a previously unrecognized landslide deposit into the upper delta plain, suggests that understanding the exogenic influences on reservoir sedimentation is critical to interpretation and prediction of the sedimentation within individual systems. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000493796300003 |
WOS关键词 | SCALE DAM REMOVAL ; ENGLEBRIGHT LAKE ; SEDIMENT ; GEOMORPHOLOGY ; ACCUMULATION ; CALIFORNIA ; HISTORY ; IMPACT ; FLOOD |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/188055 |
专题 | 地球科学 |
作者单位 | 1.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, 104 CEOAS Admin Bldg,101 SW 26th St, Corvallis, OR 97331 USA; 2.US Forest Serv, USDA, Pacific Northwest Res Stn, 3200 SW Jefferson Way, Corvallis, OR 97331 USA; 3.US Geol Survey, Oregon Water Sci Ctr, 2130 SW 5th Ave, Portland, OR 97201 USA |
推荐引用方式 GB/T 7714 | Stratton, Laurel E.,Grant, Gordon E.. Autopsy of a reservoir: Facies architecture in a multidam system, Elwha River, Washington, USA[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2019,131:1794-1822. |
APA | Stratton, Laurel E.,&Grant, Gordon E..(2019).Autopsy of a reservoir: Facies architecture in a multidam system, Elwha River, Washington, USA.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,131,1794-1822. |
MLA | Stratton, Laurel E.,et al."Autopsy of a reservoir: Facies architecture in a multidam system, Elwha River, Washington, USA".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 131(2019):1794-1822. |
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