Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1017/qua.2021.14 |
| Aeolian sediments in paleowetland deposits of the Las Vegas Formation | |
| Goldstein, Harland L.; Springer, Kathleen B.; Pigati, Jeffrey S.; Reheis, Marith C.; Skipp, Gary L. | |
| 通讯作者 | Goldstein, HL (corresponding author), US Geol Survey, Denver Fed Ctr, Box 25046, Denver, CO 80225 USA. |
| 来源期刊 | QUATERNARY RESEARCH
 |
| ISSN | 0033-5894 |
| EISSN | 1096-0287 |
| 出版年 | 2021 |
| 卷号 | 104页码:1-13 |
| 英文摘要 | The Las Vegas Formation (LVF) is a well-characterized sequence of groundwater discharge (GWD) deposits exposed in and around the Las Vegas Valley in southern Nevada. Nearly monolithologic bedrock surrounds the valley, which provides an excellent opportunity to test the hypothesis that GWD deposits include an aeolian component. Mineralogical data indicate that the LVF sediments are dominated by carbonate minerals, similar to the local bedrock, but silicate minerals are also present. The median particle size is similar to 35 mu m, consistent with modern dust in the region, and magnetic properties contrast strongly with local bedrock, implying an extralocal origin. By combining geochemical data from the LVF sediments and modern dust, we found that an average of similar to 25% of the LVF deposits were introduced by aeolian processes. The remainder consists primarily of authigenic groundwater carbonate as well as minor amounts of alluvial material and soil carbonate. Our data also show that the aeolian sediments accumulated in spring ecosystems in the Las Vegas Valley in a manner that was independent of both time and the specific hydrologic environment. These results have broad implications for investigations of GWD deposits located elsewhere in the southwestern U.S. and worldwide. |
| 英文关键词 | Groundwater discharge Aeolian Dust Las Vegas Formation Paleohydrology Desert wetlands |
| 类型 | Article |
| 语种 | 英语 |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000720829800001 |
| WOS关键词 | DESERT WETLANDS ; MOJAVE DESERT ; VALLEY ; DISCHARGE ; DIVERSITY |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| WOS研究方向 | Physical Geography ; Geology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/373813 |
| 作者单位 | [Goldstein, Harland L.; Springer, Kathleen B.; Pigati, Jeffrey S.; Reheis, Marith C.; Skipp, Gary L.] US Geol Survey, Denver Fed Ctr, Box 25046, Denver, CO 80225 USA |
| 推荐引用方式 GB/T 7714 | Goldstein, Harland L.,Springer, Kathleen B.,Pigati, Jeffrey S.,et al. Aeolian sediments in paleowetland deposits of the Las Vegas Formation[J],2021,104:1-13. |
| APA | Goldstein, Harland L.,Springer, Kathleen B.,Pigati, Jeffrey S.,Reheis, Marith C.,&Skipp, Gary L..(2021).Aeolian sediments in paleowetland deposits of the Las Vegas Formation.QUATERNARY RESEARCH,104,1-13. |
| MLA | Goldstein, Harland L.,et al."Aeolian sediments in paleowetland deposits of the Las Vegas Formation".QUATERNARY RESEARCH 104(2021):1-13. |
| 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。
