Provenance, transport and characteristics of modern aeolian dust in western Gansu Province, China, and interpretation of the Quaternary loess record
Provenance, transport and characteristics of modern aeolian dust in western Gansu Province, China, and interpretation of the Quaternary loess record
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DOI：
10.1006/jare.1997.0369
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发表时间：
1998-07-01
影响因子：
2.7
通讯作者：
Kemp, RA
中科院分区：
文献类型：
--
作者：
Derbyshire, E;Meng, XM;Kemp, RA
总结了 4 年的月度降尘样品与中国北部甘肃省地表冲积扇沉积物、沙漠沙丘和晚更新世黄土和古土壤样品的比较分析结果。他们提出了对沙漠是第四纪黄土的主要单一来源这一传统观点的限定。认为甘肃河西走廊地区规模庞大、数量众多的山前冲积扇表面的淤泥塌陷是中国黄土高原西部地区黄土柱的重要贡献。河西走廊目前的降尘状况表明，目前间冰期的气降淤泥的分布和积累速率与更新世黄土记录的部分地区相似。 (C)1998 学术出版社有限公司。
Results of a comparative analysis of a 4-year set of monthly samples of airfall dust with samples from surface alluvial fan deposits, desert sand dunes and late Pleistocene loess and palaeosols in Gansu Province, northern China, are summarized. They suggest a qualification of the conventional view that the sand deserts were the primary single source of the Quaternary loess. It is argued that silts deflated from the surfaces of the large and numerous piedmont alluvial fans in the Hexi Corridor, Gansu, constituted a major contribution to the loess column in the western region of the Chinese Loess Plateau. The present dust fall regime in the Hexi Corridor suggests that distribution and rate of accumulation of airfall silt in the present interglacial is similar to that in parts of the Pleistocene loess record. (C)1998 Academic Press Limited.