Arid
DOI10.1016/j.geomorph.2017.01.004
Late Quaternary loess-like paleosols and pedocomplexes, geochemistry, provenance and source area weathering, Manasbal, Kashmir Valley, India
Babeesh, C.1; Achyuthan, Hema1; Jaiswal, Manoj Kumar2; Lone, Aasif1
通讯作者Achyuthan, Hema
来源期刊GEOMORPHOLOGY
ISSN0169-555X
EISSN1872-695X
出版年2017
卷号284页码:191-205
英文摘要

The late Quaternary loess and loess-like deposits in Kashmir Valley are natural archives that have preserved paleoclimate and paleoenvironmental records of the region. We present a loess-like paleosol located along the margin of the Manasbal Lake, Ganderbal, which was studied in detail for understanding the pedological processes and reconstructing the late Quaternary soil formation. In this paper we present loess-like paleosol formation of a nearly 10.6 m thick sequence exposed along the margin of Manasbal Lake, Ganderbal District, Srinagar, Kashmir. Geochemical and textural data of this loess-like sedimentary sequence fluctuate reflecting the varied depositional processes operating in the valley, differential intensity of weathering, and processes of pedogenesis. Weathering indices such as chemical index of alteration, chemical index of weathering, and plagioclase index of alteration reveal weak to moderate weathering of the parent material. Provenance discrimination diagrams of the present study disclose that the Manasbal loess-like paleosol sediments are derived from the mixed source rocks suggesting a variety of provenance with variable geological settings, which apparently have undergone weak to moderate recycling processes. The Manasbal paleosol horizons have been dated by the optically stimulated luminescence (OSL) method to the marine isotope stages mid-MIS-3 (41.7 +/- 8.0 ka) and late-MIS-2 (14.6 +/- 3.8 ka). During the MIS-3 period, the climate was wetter, forming a strong AhBtk paleosol as inferred from the geochemical data. A steady increase in the CaCO3 content and C/N ratio in the paleosols from 6.50 m (MIS-3) indicates arid and. drier climatic conditions. The area around Manasbal Lake incised because of climate change and neotectonic activity since post -14 ka. (C) 2017 Elsevier B.V. All rights reserved.


英文关键词Loess-like paleosol Pedocomplexes Geochemical indices Weathering and provenance
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000400214400015
WOS关键词PLEISTOCENE CLIMATIC CHANGES ; GRAIN-SIZE ; CHINESE LOESS ; SEDIMENTARY-ROCKS ; ARCHEAN SHALES ; GLACIAL LOESS ; ORIGIN ; DEPOSITS ; PLATEAU ; RECORD
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/2XILL650/199266
作者单位1.Anna Univ, Dept Geol, Madras 600025, Tamil Nadu, India;
2.Indian Inst Sci Educ & Res, Dept Earth Sci, Kolkata 741246, India
推荐引用方式
GB/T 7714
Babeesh, C.,Achyuthan, Hema,Jaiswal, Manoj Kumar,et al. Late Quaternary loess-like paleosols and pedocomplexes, geochemistry, provenance and source area weathering, Manasbal, Kashmir Valley, India[J],2017,284:191-205.
APA Babeesh, C.,Achyuthan, Hema,Jaiswal, Manoj Kumar,&Lone, Aasif.(2017).Late Quaternary loess-like paleosols and pedocomplexes, geochemistry, provenance and source area weathering, Manasbal, Kashmir Valley, India.GEOMORPHOLOGY,284,191-205.
MLA Babeesh, C.,et al."Late Quaternary loess-like paleosols and pedocomplexes, geochemistry, provenance and source area weathering, Manasbal, Kashmir Valley, India".GEOMORPHOLOGY 284(2017):191-205.
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