Arid
Radiometric dating of hillslope calcrete in the Negev Desert, Israel
Vogel, J. C.; Geyh, M. A.
通讯作者Vogel, J. C.
来源期刊SOUTH AFRICAN JOURNAL OF SCIENCE
ISSN0038-2353
出版年2008
卷号104期号:11-12页码:493-495
英文摘要

The radiometric dating of calcrete is often problematical because impurities and open system conditions affect the apparent ages obtained. By applying both radiocarbon and uranium-series dating to calcrete In colluvium, It is shown that such conditions can be identified. In correlation with the stratigraphy, it is found that partial recrystallization severely decreases the radiocarbon ages of the upslope and shallower samples further down, whereas incorporation of limestone fragments from bedrock significantly Increases the apparent ages of some of the uranium-series samples. It Is concluded that the hillslope calcrete at the study site near Sede Beker in the Negev Desert, Israel, mainly developed shortly after 40 kyr ago, at a time when the Jordan Valley was being inundated to form the fossil Lake Llsan. Since their formation would have required higher rainfall than today, the results provide further evidence that the whole region was experiencing an increase in precipitation.


类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:000264090400021
WOS关键词CARBONATES ; C-14
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/159238
推荐引用方式
GB/T 7714
Vogel, J. C.,Geyh, M. A.. Radiometric dating of hillslope calcrete in the Negev Desert, Israel[J],2008,104(11-12):493-495.
APA Vogel, J. C.,&Geyh, M. A..(2008).Radiometric dating of hillslope calcrete in the Negev Desert, Israel.SOUTH AFRICAN JOURNAL OF SCIENCE,104(11-12),493-495.
MLA Vogel, J. C.,et al."Radiometric dating of hillslope calcrete in the Negev Desert, Israel".SOUTH AFRICAN JOURNAL OF SCIENCE 104.11-12(2008):493-495.
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