Methyltrimethyltridecylchromans (MTTCs) in lacustrine sediments in the northern Bohai Bay Basin, China

doi:10.1016/j.orggeochem.2019.03.003

	Methyltrimethyltridecylchromans (MTTCs) in lacustrine sediments in the northern Bohai Bay Basin, China
	Jiang, Kaixi 1; Lin, Chunming 1; Peng, Li 2; Zhang, Xia 1; Cai, Chunfang 3
刊名	ORGANIC GEOCHEMISTRY
	2019-07-01
卷号	133 页码:1-9
关键词	MTTCs Origin Palaeosalinity Lacustrine environments
ISSN号	0146-6380
DOI	10.1016/j.orggeochem.2019.03.003
英文摘要	Although methyltrimethyltridecylchromans (MTTCs) have been identified and studied for over 30 years in a large number of sediment extracts and crude oils, their origins and significance for palaeosalinity are still debated. Here, the geochemical features of MTTCs in 133 organic-rich lacustrine sediments obtained from the northern Bohai Bay Basin, China, are studied in detail. The sediment samples are in an immature to early mature stage and primarily enriched in Types I and II organic matter, which were deposited in lacustrine environments with relatively weakly stratified water columns and anoxic to suboxic conditions. The development of photic zone euxinia (PZE) in the water column was indicated by the occurrence of aryl isoprenoids. MTTCs were detected in all samples and characterized by low abundances of delta-MTTC and high abundances of alpha-MTTC. Variations in the relative abundance of MTTCs and calculated MTTCI values, suggest that selected lacustrine sediments were deposited in normal to semi-saline environments. A ternary diagram of mono-, di- and trimethyl-MTTCs was established, and shows potential for application as an indicator of changes in palaeosalinity. Variations in the abundance of MTTCs can effectively indicate palaeosalinity changes in lacustrine environments. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[41572112] ; Postgraduate Research & Practice Innovation Program of Jiangsu Province, China[KYCX18_0038] ; Tianjin Branch of the China National Offshore Oil Company Ltd.
WOS关键词	PRISTANE INVOLVING DERIVATION ; SONGLIAO BASIN ; SOURCE ROCKS ; INDICATORS ; DIAGENESIS ; CHROMANS ; CHLOROPHYLL ; HYPOTHESIS ; BIOMARKERS ; ORIGIN
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000469208100001
资助机构	National Natural Science Foundation of China ; Postgraduate Research & Practice Innovation Program of Jiangsu Province, China ; Tianjin Branch of the China National Offshore Oil Company Ltd.
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/38527]
专题	中国科学院南京地质古生物研究所
通讯作者	Jiang, Kaixi; Lin, Chunming
作者单位	1.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Expt Technol Ctr, Nanjing 210008, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Kaixi,Lin, Chunming,Peng, Li,et al. Methyltrimethyltridecylchromans (MTTCs) in lacustrine sediments in the northern Bohai Bay Basin, China[J]. ORGANIC GEOCHEMISTRY,2019,133:1-9.
APA	Jiang, Kaixi,Lin, Chunming,Peng, Li,Zhang, Xia,&Cai, Chunfang.(2019).Methyltrimethyltridecylchromans (MTTCs) in lacustrine sediments in the northern Bohai Bay Basin, China.ORGANIC GEOCHEMISTRY,133,1-9.
MLA	Jiang, Kaixi,et al."Methyltrimethyltridecylchromans (MTTCs) in lacustrine sediments in the northern Bohai Bay Basin, China".ORGANIC GEOCHEMISTRY 133(2019):1-9.