Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.quaint.2006.12.010 |
Late Quaternary stratigraphy and luminescence geochronology of the northeastern Mojave Desert | |
Mahan, Shannon A.; Miller, David M.; Menges, Christopher M.; Yount, James C. | |
通讯作者 | Mahan, Shannon A. |
会议名称 | Conference on Dating Quaternary Sediments and Landforms in Drylands |
会议日期 | MAR, 2005 |
会议地点 | Zzyzx, CA |
英文摘要 | The chronology of the Holocene and late Pleistocene deposits of the northeastern Mojave Desert have been largely obtained using radiocarbon ages. Our study refines and extends this framework using optically stimulated luminescence (OSL) to date deposits from Valjean Valley, Silurian Lake Playa, Red Pass, and California Valley. Of particular interest are eolian fine silts incorporated in groundwater discharge (GWD) deposits bracketed at 185-140 and 20-50 ka. Alluvial fan deposits proved amenable for OSL by dating both eolian sand lenses and reworked eolian sand in a matrix-of gravel that occurs within the fan stratigraphy. Lacustrine sand in spits and bars also yielded acceptable OSL ages. These OSL ages fill gaps in the geochronology of desert deposits, which can provide data relevant to understanding the responses of several depositional systems to regional changes in climate. This study identifies the most promising deposits for future luminescence dating and suggests that for several regions of the Mojave Desert, sediments from previously undated landforms can be more accurately placed within correct geologic map units. Published by Elsevier Ltd. |
来源出版物 | QUATERNARY INTERNATIONAL |
ISSN | 1040-6182 |
出版年 | 2007 |
卷号 | 166 |
页码 | 61-78 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | CPCI-S ; SCI-E |
WOS记录号 | WOS:000247166400007 |
WOS关键词 | UNITED-STATES ; SPRING DEPOSITS ; AEOLIAN SAND ; CALIFORNIA ; LOESS ; TIME ; LAKE ; AGE ; USA ; TRAVERTINES |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/296791 |
作者单位 | (1)US Geol Survey, Denver, CO 80225 USA;(2)US Geol Survey, Menlo Pk, CA 94025 USA;(3)US Geol Survey, Tucson, AZ 85719 USA |
推荐引用方式 GB/T 7714 | Mahan, Shannon A.,Miller, David M.,Menges, Christopher M.,et al. Late Quaternary stratigraphy and luminescence geochronology of the northeastern Mojave Desert[C]:PERGAMON-ELSEVIER SCIENCE LTD,2007:61-78. |
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