干旱区生态环境知识资源中心(Arid): Reconstruction of the Paleoenvironmental Condition Using Geochemical Proxies in the Lower Baitarani Basin, Coastal Odisha, India

Arid

DOI	10.3233/JCC200005
	Reconstruction of the Paleoenvironmental Condition Using Geochemical Proxies in the Lower Baitarani Basin, Coastal Odisha, India
	Parveen, Uzma; Sreekesh, S.; Sarpal, Sandeep
通讯作者	Sreekesh, S
来源期刊	JOURNAL OF CLIMATE CHANGE
ISSN	2395-7611
EISSN	2395-7697
出版年	2020
卷号	6 期号:1 页码:37-46
英文摘要	The subsurface sediment archives provide clues to the past climate of the Earth. To reconstruct the paleoclimate of Lower Baitarani Basin, a 1000 cm deep sediment core (JP) was collected from the flood plain located in Jhumpuri village of Jajpur, Odisha. A total number of eleven distinct layers were identified based on variations in the sediment colour and textural at varying depths. From each layer, a representative sample was collected and carried to the laboratory for further assessment. Each of these sub-samples was examined for particle size analysis, availability of total organic carbon (TOC), and elemental concentration. The physical and geochemical proxies as paleoproductivity, terrestrial flux, weathering, level of salinity, colour, and texture variations were utilised to examine the paleoclimate of the area. The colour variations of the subsurface sequences suggest that the deposition has occurred under both freshwater and stagnated/marshy conditions. The texture variations-clay, silty clay, and loamy fine sand-also indicate deviations in sediment supply and rate of sediment aggradation during climatic shift between warm-humid and cold-arid episodes. With the help of geochemical proxies to illustrate the terrestrial flux: Fe2O3, Al2O3, TiO2, MgO, CaO, Cu, Co, Ba, and Zn; paleoproductivity: TOC,CaO/Al2O3, Zn/Al2O3,Sr/Al2O3, Cu/Al2O3, and Ba/Al2O3; weathering: Fe2O3/Al2O3, TiO2/Al2O3, and MgO/Al2O3; and the salinity index, a relatively cold-dry climate is inferred during the sedimentation of basal layers. Subsequently, a shift to the relatively warm-humid phase is suggested which again was followed by a cold-dry, and warm-humid phases. In the recent deposits, the proxies have not shown any considerable variation indicating prolongation of the existing warm-humid phase. However, some indications of a climatic shift to colder climate is also marked in the surface layer (JPL1).
英文关键词	Paleoclimate Geochemical proxies Grain size Sedimentation Flood plain
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000516763300006
WOS关键词	SEA-LEVEL CHANGES ; LATE PLEISTOCENE-HOLOCENE ; LATE-QUATERNARY ; ENVIRONMENTAL-CHANGES ; SOUTHWEST COAST ; EAST-COAST ; TAMIL-NADU ; WEST-COAST ; SEDIMENTS ; TRACE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334238
作者单位	[Parveen, Uzma; Sreekesh, S.] Jawaharlal Nehru Univ, Ctr Study Reg Dev, New Delhi, India; [Sarpal, Sandeep] Jawaharlal Nehru Univ, Adv Instrumentat Res Facil, New Delhi, India
推荐引用方式 GB/T 7714	Parveen, Uzma,Sreekesh, S.,Sarpal, Sandeep. Reconstruction of the Paleoenvironmental Condition Using Geochemical Proxies in the Lower Baitarani Basin, Coastal Odisha, India[J],2020,6(1):37-46.
APA	Parveen, Uzma,Sreekesh, S.,&Sarpal, Sandeep.(2020).Reconstruction of the Paleoenvironmental Condition Using Geochemical Proxies in the Lower Baitarani Basin, Coastal Odisha, India.JOURNAL OF CLIMATE CHANGE,6(1),37-46.
MLA	Parveen, Uzma,et al."Reconstruction of the Paleoenvironmental Condition Using Geochemical Proxies in the Lower Baitarani Basin, Coastal Odisha, India".JOURNAL OF CLIMATE CHANGE 6.1(2020):37-46.