| A rapid lake-shallowing event terminated preservation of the Miocene Clarkia Fossil Konservat-Lagerstatte (Idaho, USA) | |
| Wang, Huanye1; Leng, Qin2; Liu, Weiguo1; Yang, Hong2 | |
| 2017-03-01 | |
| 发表期刊 | GEOLOGY
 |
| 卷号 | 45期号:3页码:239-242 |
| 文章类型 | Article |
| 摘要 | The world-renowned middle Miocene Clarkia lacustrine deposits (15.4-16.0 Ma) in northern Idaho, United States, known as Fossil Lagerstatten, yield extraordinary fossils that preserve in situ ancient biomolecules and organic biomarkers. The sudden formation of the Clarkia Lake basin by means of the Columbia River Basalt damming the proto-St. Maries River is well documented, but less is known about the tempo and mode of the lake environmental succession which impacted on the preservation of these Fossil Lagerstatten. Here, we present evidence for a previously unrecognized, geologically instantaneous drop in the Clarkia Lake water level, using tetraether-based water-depth proxies from a continuous sedimentary sequence at the classic P-33 site. Terrestrial hydrological conditions inferred from compound-specific hydrogen isotope compositions (dD) and tetraether-derived temperature estimates from the same sequence show that the rapid shallowing by > 10 m was independent of regional climatic changes. We hypothesize that a volcanic-related geological event was primarily responsible for the rapid reduction of Clarkia Lake water depth-an event that played a decisive role in switching depositional conditions for Clarkia Fossil Lagerstaten from a conservation deposit to a concentration deposit. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| DOI | 10.1130/G38434.1 |
| 关键词[WOS] | TETRAETHER LIPIDS ; NORTHERN IDAHO ; AFRICAN LAKE ; SEDIMENTS ; HYDROCARBONS ; ERUPTIONS ; BEDS ; AGE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| WOS记录号 | WOS:000396125100011 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5530 |
| 专题 | 加速器质谱中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China 2.Bryant Univ, Coll Arts & Sci, Dept Sci & Technol, Lab Terr Environm, Smithfield, RI 02917 USA |
| 推荐引用方式 GB/T 7714 | Wang, Huanye,Leng, Qin,Liu, Weiguo,et al. A rapid lake-shallowing event terminated preservation of the Miocene Clarkia Fossil Konservat-Lagerstatte (Idaho, USA)[J]. GEOLOGY,2017,45(3):239-242. |
| APA | Wang, Huanye,Leng, Qin,Liu, Weiguo,&Yang, Hong.(2017).A rapid lake-shallowing event terminated preservation of the Miocene Clarkia Fossil Konservat-Lagerstatte (Idaho, USA).GEOLOGY,45(3),239-242. |
| MLA | Wang, Huanye,et al."A rapid lake-shallowing event terminated preservation of the Miocene Clarkia Fossil Konservat-Lagerstatte (Idaho, USA)".GEOLOGY 45.3(2017):239-242. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| A rapid lake-shallow（332KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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