Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/144888 |
| 报告编号 | DOE/NV/11417--3 |
| 来源ID | OSTI_ID: 144888 |
| Great Basin paleoenvironmental studies project; Third quarterly technical progress report, December 1993--February 1994 | |
| [unavailable] | |
| 英文摘要 | Examination of the paleolithic and geomorphic records to determine the local and regional impact of past climates will advance assessment of Yucca Mountain`s suitability as a high-level nuclear waste repository. The project includes the integration of botanical, faunal, and geomorphic components to accomplish this goal. Paleobotanical studies will reconstruct the response of vegetation to climate change at the community and the organismal levels by integrating data obtained from nearly continuous sediment records of pollen, plant macrofossils, and stable isotopes from fossil woodrat middens. The goal of the paleofaunas study is to construct a history of Great Basin vertebrates, particularly mammals, that will provide empirical evidence of past environmental and climatic conditions within the Great Basin as it is recorded by the animals. Taxonomic composition of archaeological and paleontological faunas from various areas within the Great Basin and morphological change within individual mammalian taxa at specific localities are being investigated to monitor faunal response to changing environmental conditions. The objective of the geomorphology component of the paleoenvironmental program is to document the responses of surficial processes and landforms to the climatic changes documented by studies of packrat middens, pollen, and faunal distributions. The project will focus on: (1) stratigraphic relationships between lake deposits and aeolian or fluvial sediments and landforms; (2) cut and fill sequences in floodplain and river-channel deposits; (3) identification of periods of dune mobility and stability; (4) documentation of episodes of alluvial fan and terrace development and erosion; and (5) correlation of (3) and (4) to climatically driven lake-level fluctuation as revealed by shoreline features such as strandlines and beach ridges. Accomplishments for this period are presented for these studies. |
| 出版年 | 1994 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 05 NUCLEAR FUELS ; 58 GEOSCIENCES ; 54 ENVIRONMENTAL SCIENCES ; HIGH-LEVEL RADIOACTIVE WASTES ; RADIOACTIVE WASTE DISPOSAL ; SITE CHARACTERIZATION ; YUCCA MOUNTAIN ; PALYNOLOGY ; CLIMATIC CHANGE ; ARCHAEOLOGY ; GEOMORPHOLOGY ; STRATIGRAPHY ; GEOBOTANY ; PROGRESS REPORT ; Yucca Mountain Project |
| URL | http://www.osti.gov/scitech/servlets/purl/144888 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/265585 |
| 推荐引用方式 GB/T 7714 | [unavailable]. Great Basin paleoenvironmental studies project; Third quarterly technical progress report, December 1993--February 1994,1994. |
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