Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1006/qres.1998.1994 |
Clay minerals in soils as evidence of Holocene climatic change, central Indo-Gangetic Plains, north-central India | |
Srivastava, P; Parkash, B; Pal, DK | |
通讯作者 | Srivastava, P |
来源期刊 | QUATERNARY RESEARCH
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ISSN | 0033-5894 |
出版年 | 1998 |
卷号 | 50期号:3页码:230-239 |
英文摘要 | Clay mineral assemblages of a soil chrono-association comprising five fluvial surface members (QGH1 to QGH5) of the Indo-Gangetic Plains between the Ramganga and Rapti rivers, northcentral India, demonstrate that pedogenic interstratified smectite-kaolin (Sm/K) can be considered as a potential indicator for paleoclimatic changes during the Holocene from arid to humid climates. On the basis of available radiocarbon dates, thermoluminescence dates, and historical evidence, tentative ages assigned to QGH1 to QGH5 are <500 yr B.P., >500 yr B.P., >2500 yr B.P., 8000 TL yr B.P., and 13,500 TL yr B.P., respectively. During pedogenesis two major regional climatic cycles are recorded: relatively arid climates between 10,000-6500 yr B.P. and 3800-? yr B.P. were punctuated by a warm and humid climate. Biotite weathered to trioctahedral vermiculite and smectite in the soils during arid conditions, and smectite was unstable and transformed to Sm/K during the warm and humid climatic phase (7400-4150 cal yr B.P.). When the humid climate terminated, vermiculite, smectite, and Sm/K were preserved to the present day. The study suggests that during the development of soils in the Holocene in alluvium of the Indo-Gangetic Plains, climatic fluctuations appear to be more important than realized hitherto. The soils older than 2500 yr B.P. are relict paleosols, but they are polygenetic because of their subsequent alterations. (C) 1998 University of Washington. |
类型 | Article |
语种 | 英语 |
国家 | India |
收录类别 | SCI-E |
WOS记录号 | WOS:000077365700004 |
WOS关键词 | RAJASTHAN ; SMECTITE |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/136587 |
作者单位 | (1)Natl Bur Soil Survey & Land Use Planning, Div Soil Resource Studies, Nagpur 440010, Maharashtra, India;(2)Univ Roorkee, Dept Earth Sci, Roorkee 247667, Uttar Pradesh, India |
推荐引用方式 GB/T 7714 | Srivastava, P,Parkash, B,Pal, DK. Clay minerals in soils as evidence of Holocene climatic change, central Indo-Gangetic Plains, north-central India[J],1998,50(3):230-239. |
APA | Srivastava, P,Parkash, B,&Pal, DK.(1998).Clay minerals in soils as evidence of Holocene climatic change, central Indo-Gangetic Plains, north-central India.QUATERNARY RESEARCH,50(3),230-239. |
MLA | Srivastava, P,et al."Clay minerals in soils as evidence of Holocene climatic change, central Indo-Gangetic Plains, north-central India".QUATERNARY RESEARCH 50.3(1998):230-239. |
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