Arid
DOI10.1017/S0033822200066418
Dilemma of dating on lacustrine deposits in an hyperarid inland basin of NW China
Zhang, H. C.; Ming, Q. Z.; Lei, G. L.; Zhang, W. X.; Fan, H. F.; Chang, F. Q.; Wuennemann, B.; Hartmann, K.
通讯作者Zhang, H. C.
来源期刊RADIOCARBON
ISSN0033-8222
出版年2006
卷号48期号:2页码:219-226
英文摘要

Conventional and accelerator mass spectrometry (AMS) radiocarbon, TL, OSL, and IRSL dating results on samples from the cores D100 and 170 from Ejina Basin, one of the most important inland basins in arid-hyperarid NW China, show that it is difficult to determine the ages of sediments at different depths. AMS ages of core D 100 samples demonstrate that the sediments at depths from 10 to 90 m were formed between 14 to 30 kyr BR The inverted ages from both the D100 and 170 cores imply that there was a strong reworking of the sediments during and after deposition processes. The inverted ages also indicate drastic fluctuations of groundwater bearing soluble organic matters, which might be related to neotectonic activities and climate changes during the period. Consequently, it is impossible to establish an accurate and reliable chronology for the cores based only on these dates. All AMS ages, if they are reliable and acceptable, indicate a high deposition rate (5 similar to 8 mm/yr), and since all TL, OSL, and IRSL ages are much older than those given by AMS, it makes these methods questionable for determining the ages of lacustrine-fluvial-alluvial deposits.


类型Article
语种英语
国家Peoples R China ; Germany
收录类别SCI-E
WOS记录号WOS:000239324000005
WOS关键词TENGGER DESERT ; NORTHWESTERN CHINA ; CLIMATE CHANGES ; EVOLUTION ; DUST ; TECTONICS ; OCEAN ; ASIA ; BP ; KA
WOS类目Geochemistry & Geophysics
WOS研究方向Geochemistry & Geophysics
来源机构兰州大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/152910
作者单位(1)Lanzhou Univ, Coll Earth Sci & Environm, MOE, Natl Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China;(2)Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China;(3)Yunnan Normal Univ, Coll Tourist & Geog, Kunming 650092, Peoples R China;(4)FU Berlin, Inst Geog Sci, D-12249 Berlin, Germany
推荐引用方式
GB/T 7714
Zhang, H. C.,Ming, Q. Z.,Lei, G. L.,et al. Dilemma of dating on lacustrine deposits in an hyperarid inland basin of NW China[J]. 兰州大学,2006,48(2):219-226.
APA Zhang, H. C..,Ming, Q. Z..,Lei, G. L..,Zhang, W. X..,Fan, H. F..,...&Hartmann, K..(2006).Dilemma of dating on lacustrine deposits in an hyperarid inland basin of NW China.RADIOCARBON,48(2),219-226.
MLA Zhang, H. C.,et al."Dilemma of dating on lacustrine deposits in an hyperarid inland basin of NW China".RADIOCARBON 48.2(2006):219-226.
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