干旱区生态环境知识资源中心(Arid): Paleoclimate and Holocene relative sea-level history of the east coast of India

Arid

DOI	10.1007/s10933-020-00124-2
	Paleoclimate and Holocene relative sea-level history of the east coast of India
	Nageswara Rao, Kakani; Pandey, Shilpa; Kubo, Sumiko; Saito, Yoshiki; Naga Kumar, K. Ch. V.; Demudu, Gajji; Malini, Bandaru Hema; Nagumo, Naoko; Nakashima, Rei; Sadakata, Noboru
通讯作者	Pandey, S
来源期刊	JOURNAL OF PALEOLIMNOLOGY
ISSN	0921-2728
EISSN	1573-0417
出版年	2020
卷号	64 期号:2 页码:71-89
英文摘要	The Holocene sea-level history of the east coast of India is relatively unexplored. We analysed a 17.37-m-long sediment core from Kolleru Lake, a fresh waterbody located in a deltaic setting along the east coast of India, to reconstruct the climate, environmental, and sea-level history of the region. Sedimentary facies and pollen assemblages, with nine accelerator mass spectrometry C-14 dates (two mollusk shells and seven plant samples) from the core revealed Holocene relative sea-level changes, and provide the first insights into the climate of the region from the Last Glacial Maximum (LGM) to present. A layer of anhydrous calcium sulfate at the core bottom, along with a C-14 age of 18.4 cal ka BP, combined with the absence of pollen in mottled yellowish clay, indicated a desiccated lake surface, reflecting a dry LGM climate. Palynomorphs in the overlying calcareous-concretion-bearing light brown silty clay showed a change from arid terrestrial herbaceous plants to freshwater taxa, indicating a change from dry to wet climate after the LGM and before 8.0 cal ka BP. Further upward in the core, black, sticky silty clay with abundant mangrove pollen and mollusk shells indicated a marine environment in Kolleru Lake and aggradational sediment stacking related to the middle Holocene sea-level rise from 8.0 to 4.9 cal ka BP. The uppermost sandy/silty clay, with terrestrial/aquatic pollen and a C-14 age of 3.7 cal ka BP indicated a freshwater environment during the late Holocene. Our results show that Kolleru Lake, on the east coast of India, changed from a desiccated state during the dry LGM to a brackish lagoon during the middle Holocene, and then to a freshwater lake by the late Holocene, under the influence of climate and relative sea-level changes.
英文关键词	Desiccated lake Gypsum layer Paleo lagoon Mangrove pollen Relative sea-level rise
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000530228200001
WOS关键词	LAST GLACIAL MAXIMUM ; MEKONG RIVER DELTA ; KOLLERU LAKE ; CLIMATE-CHANGE ; POLLEN RECORD ; SEDIMENT COMPACTION ; LATE PLEISTOCENE ; MANGROVE POLLEN ; WEST-COAST ; MONSOON
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Limnology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324400
作者单位	[Nageswara Rao, Kakani] Andhra Univ, Dept Geoengn, Visakhapatnam 530003, Andhra Pradesh, India; [Pandey, Shilpa] Birbal Sahni Inst Palaeosci, Quaternary Div, Lucknow 226007, Uttar Pradesh, India; [Kubo, Sumiko] Waseda Univ, Dept Geog, Tokyo 1698050, Japan; [Saito, Yoshiki] Shimane Univ, Estuary Res Ctr, Nishikawatsu Cho 1060, Matsue, Shimane 6908504, Japan; [Saito, Yoshiki; Nakashima, Rei] AIST, Geol Survey Japan, 7,Higashi 1-1-1, Tsukuba, Central 3058567, Japan; [Naga Kumar, K. Ch. V.] Ctr Water Resources Dev & Management, Geomat Div, Kunnamangalam 673571, Kozhikode, India; [Demudu, Gajji; Malini, Bandaru Hema] Andhra Univ, Dept Geog, Visakhapatnam 530003, Andhra Pradesh, India; [Nagumo, Naoko] Publ Works Res Inst, 1-6 Minamihara, Tsukuba, Ibaraki 3058516, Japan; [Sadakata, Noboru] 287-9 Ogori Shimogo, Yamaguchi 7540002, Japan
推荐引用方式 GB/T 7714	Nageswara Rao, Kakani,Pandey, Shilpa,Kubo, Sumiko,et al. Paleoclimate and Holocene relative sea-level history of the east coast of India[J],2020,64(2):71-89.
APA	Nageswara Rao, Kakani.,Pandey, Shilpa.,Kubo, Sumiko.,Saito, Yoshiki.,Naga Kumar, K. Ch. V..,...&Sadakata, Noboru.(2020).Paleoclimate and Holocene relative sea-level history of the east coast of India.JOURNAL OF PALEOLIMNOLOGY,64(2),71-89.
MLA	Nageswara Rao, Kakani,et al."Paleoclimate and Holocene relative sea-level history of the east coast of India".JOURNAL OF PALEOLIMNOLOGY 64.2(2020):71-89.