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Sediment Provenance of the Nansha Trough Since 40 ka BP in the South China Sea: Evidence From delta C-13(org), TOC and Pollen Composition
Thilakanayaka, Vidusanka; Luo Chuanxiu; Rong Xiang; Devendra, Dhanushka; Dasanayaka, S. A. H. K.; Jiang, Weiming2; Rahman, Ananna; Kumar, Sazal; Ariful, G. M.
2019
Source PublicationFRONTIERS IN EARTH SCIENCE
ISSN2296-6463
Volume7Pages:UNSP 110
AbstractGeochemical proxies in organic matter (OM) are considered to be reliable proxies for deciphering types of paleo-vegetation (C3 plants and C4 plants) and their abundance. The contributions of total organic carbon (TOC), stable carbon isotopes (delta C-13(org)), total nitrogen (TN) and organic carbon to total nitrogen ratios (C/N) were obtained from a gravity core NS07-25 (6 degrees 39.945' N, 113 degrees 32.936' E, water depth 2006 m), extracted from the southern South China Sea (SCS). These data were used to reconstruct the climate changes of the Nansha Trough since 40 ka B.P. by comparing them with pollen data from the same core, and this comparison provides better sediment provenance details in the study area. During the periods between 37 and 27 ka, and from 12.5 ka to modern day, the majority of terrestrial sediment received from Borneo, and some climatic events have been governed by aeolian fluxes from mid-latitude areas (mainland China). These periods were relatively humid, compared to 27-12.5 ka, where the majority of terrestrial sediment came from the Sunda Shelf through riverine pathways. This study serves as the first study to correlate deep oceanic pollen and geochemical proxies in order to identify the weaken terrestrial OM signals in the deep ocean.
DepartmentOMG
KeywordSouthern South China Sea TOC delta C-13(org) pollen deep ocean sediment provenance
DOI10.3389/feart.2019.00110
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17955
Collection中科院边缘海地质重点实验室
Affiliation1.[Thilakanayaka, Vidusanka; Luo Chuanxiu; Rong Xiang; Devendra, Dhanushka; Rahman, Ananna; Kumar, Sazal; Ariful, G. M.] Chinese Acad Sci, Key Lab Ocean & Marginal Sea Geol, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
2.Thilakanayaka, Vidusanka; Luo Chuanxiu; Rong Xiang; Devendra, Dhanushka; Dasanayaka, S. A. H. K.; Rahman, Ananna; Kumar, Sazal; Ariful, G. M.] Univ Chinese Acad Sci, Beijing, Peoples R China
3.Guangzhou Univ, Guangzhou, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Thilakanayaka, Vidusanka,Luo Chuanxiu,Rong Xiang,et al. Sediment Provenance of the Nansha Trough Since 40 ka BP in the South China Sea: Evidence From delta C-13(org), TOC and Pollen Composition[J]. FRONTIERS IN EARTH SCIENCE,2019,7:UNSP 110.
APA Thilakanayaka, Vidusanka.,Luo Chuanxiu.,Rong Xiang.,Devendra, Dhanushka.,Dasanayaka, S. A. H. K..,...&Ariful, G. M..(2019).Sediment Provenance of the Nansha Trough Since 40 ka BP in the South China Sea: Evidence From delta C-13(org), TOC and Pollen Composition.FRONTIERS IN EARTH SCIENCE,7,UNSP 110.
MLA Thilakanayaka, Vidusanka,et al."Sediment Provenance of the Nansha Trough Since 40 ka BP in the South China Sea: Evidence From delta C-13(org), TOC and Pollen Composition".FRONTIERS IN EARTH SCIENCE 7(2019):UNSP 110.
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