干旱区生态环境知识资源中心(Arid): Geochemical characterisation of stream sediments and soil samples from Karewa deposits of south Kashmir, NW Himalaya, India

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DOI	10.1007/s12665-019-8212-5
	Geochemical characterisation of stream sediments and soil samples from Karewa deposits of south Kashmir, NW Himalaya, India
	Bhat, Nadeem A.1; Singh, B. P.2; Nath, Som 3; Bhat, Aijaz A.4; Guha, D. B.5
通讯作者	Bhat, Nadeem A.
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2019
卷号	78 期号:9
英文摘要	Thirty-six sediment samples from twelve soil profiles have been collected from Karewa deposits of south Kashmir with an objective for evaluating weathering of the source area, palaeoclimate and environmental contamination. Chemical Index of Alteration (CIA), Plagioclase Index of Alteration (PIA) and Chemical Index of Weathering (CIW) values of the sediments averaged at 53.99, 68.6 and 72.53 indicating low to moderate degree of weathering. Higher values are observed in the samples collected at top surface. The samples taken at 15cm depth and 60cm depth showed almost similar but lesser values than top soil samples. A-CN-K and A-CNK-FM diagrams showed an almost similar contents for Al2O3, CaO, Na2O, K2O and MgO as those of upper crust, reflecting very poor to moderate weathering history. The ratio plots of SiO2 vs Al2O3+K2O+Na2O and CIA (molar) vs Al2O3 indicate semi-arid climatic conditions with a mean annual precipitation of 846mm per year and mean annual paleo-temperature of 10.91 degrees C. Metal concentration in sediment samples ranged from 331.1 to 571ppm (Ba), 146 to 292ppm (Zr), 82 to 587ppm (Sr), 70 to 130ppm (Cr), 58.9 to 120ppm (Rb), 37.6 to 112ppm (V) and 43 to 112ppm (Zn). The enrichment ratio of 6 for As, 3 for Cr and 2 for Ni, Sb and Tb indicate the enrichment of these metals in the sediment samples. The QoC plot of As, Ni, Co and Cr illustrated an anthropogenic source and Ba, Rb, Sr, Nb, and Ta were mainly derived from geogenic sources with no evidence of anthropogenic contamination.
英文关键词	Sediment geochemistry Weathering Paleoclimate Contamination Karewa deposits Kashmir
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000465955600003
WOS关键词	LAKE-SEDIMENTS ; CHEMICAL INDEX ; SURFACE SOILS ; RIVER-BASIN ; PROVENANCE ; TRACE ; CHEMISTRY ; CONSTRAINTS ; PROVINCE ; ELEMENTS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215411
作者单位	1.Geol Survey India, State Unit, Hyderabad 500068, Andhra Pradesh, India; 2.Banaras Hindu Univ, Dept Geol, Varanasi 221005, Uttar Pradesh, India; 3.Geol Survey India, Lucknow 226024, Uttar Pradesh, India; 4.Geol Survey India, State Unit, Bengaluru 560001, India; 5.Geol Survey India, Jaipur 302004, Rajasthan, India
推荐引用方式 GB/T 7714	Bhat, Nadeem A.,Singh, B. P.,Nath, Som,et al. Geochemical characterisation of stream sediments and soil samples from Karewa deposits of south Kashmir, NW Himalaya, India[J],2019,78(9).
APA	Bhat, Nadeem A.,Singh, B. P.,Nath, Som,Bhat, Aijaz A.,&Guha, D. B..(2019).Geochemical characterisation of stream sediments and soil samples from Karewa deposits of south Kashmir, NW Himalaya, India.ENVIRONMENTAL EARTH SCIENCES,78(9).
MLA	Bhat, Nadeem A.,et al."Geochemical characterisation of stream sediments and soil samples from Karewa deposits of south Kashmir, NW Himalaya, India".ENVIRONMENTAL EARTH SCIENCES 78.9(2019).