Arid
DOI10.1016/j.quaint.2010.10.019
Stratigraphies and chronologies of late Quaternary loess-paleosol sequences in the core area of the central Asian arid zone
Feng, Z. -D.1,2; Ran, M.2; Yang, Q. L.2; Zhai, X. W.2; Wang, W.2; Zhang, X. S.2; Huang, C. Q.2
通讯作者Feng, Z. -D.
来源期刊QUATERNARY INTERNATIONAL
ISSN1040-6182
出版年2011
卷号240期号:1页码:156-166
英文摘要

The sporadic distribution of the Quaternary loess in Central Asia makes it hard to establish a regional pedostratigraphy through visual tracing of marker strata. The pedostratigraphic correlation presented here is thus completely based on the radiocarbon chronologies of the four studied sections. The first noticeable feature is that poorly-drained conditions predominated in the period between similar to 48,000 and similar to 30,000 (14)C BP, during which three entisols developed at similar to 45,000 (14)C BP, similar to 40,000 (14)C BP, and similar to 35,000 (14)C BP. After a period of loess deposition between similar to 30,000 and similar to 18,000 (14)C BP under poorly-drained conditions, an entisol at the westernmost site (Valikhanov, south-central Kazakhstan) developed between similar to 18,000 and similar to 10,000 (14)C BP, also under poorly-drained conditions. The time equivalent deposits at Romantic and Zeketai sections to the east do not exhibit any soil-forming characteristics, although poorly-drained conditions are also imprinted in the time-equivalent loess. The Holocene sequences in the Central Asian domain consist of an early Holocene loess unit deposited between similar to 10,000 and similar to 5,000 (14)C BP and a late Holocene soil formed during the past similar to 5000 years. In comparison, the climate was also wet between similar to 48,000 and similar to 20,000 (14)C BP, during which three mollisols developed under well-drained conditions in the Chinese Loess Plateau of the East Asian domain. The loess deposited between similar to 23,000 and similar to 10,000 (14)C BP in the Chinese Loess Plateau has neither observable marks of soil formation nor imprints of poorly-drained conditions. The Holocene sequence in the East Asian domain exhibits an out-of-phase relationship with that in the Central Asian domain, consisting of an early Holocene soil formed between similar to 9000 and similar to 4000 (14)C BP and a late Holocene loess unit deposited during the past similar to 4000 years. (C) 2010 Elsevier Ltd and INQUA. All rights reserved.


类型Article
语种英语
国家USA ; Peoples R China
收录类别SCI-E
WOS记录号WOS:000293551600017
WOS关键词CHINESE LOESS ; ENVIRONMENTAL-CHANGES ; VEGETATION VARIATIONS ; WESTERN PART ; PLATEAU ; RECORD ; EAST ; SIBERIA ; SECTION
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
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/2XILL650/170200
作者单位1.Baylor Univ, Dept Geol, Waco, TX 76798 USA;
2.Lanzhou Univ, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Feng, Z. -D.,Ran, M.,Yang, Q. L.,et al. Stratigraphies and chronologies of late Quaternary loess-paleosol sequences in the core area of the central Asian arid zone[J]. 兰州大学,2011,240(1):156-166.
APA Feng, Z. -D..,Ran, M..,Yang, Q. L..,Zhai, X. W..,Wang, W..,...&Huang, C. Q..(2011).Stratigraphies and chronologies of late Quaternary loess-paleosol sequences in the core area of the central Asian arid zone.QUATERNARY INTERNATIONAL,240(1),156-166.
MLA Feng, Z. -D.,et al."Stratigraphies and chronologies of late Quaternary loess-paleosol sequences in the core area of the central Asian arid zone".QUATERNARY INTERNATIONAL 240.1(2011):156-166.
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