气候变化领域集成服务门户(CCPortal): Biological sources of sedimentary organic matter in Neoproterozoic–Lower Cambrian shales in the Sichuan Basin (SW China): Evidence from biomarkers and microfossils

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DOI	10.1016/j.palaeo.2018.12.012
	Biological sources of sedimentary organic matter in Neoproterozoic–Lower Cambrian shales in the Sichuan Basin (SW China): Evidence from biomarkers and microfossils
	Wang N.; Li M.; Hong H.; Song D.; Tian X.; Liu P.; Fang R.; Chen G.; Wang M.
发表日期	2019
ISSN	0031-0182
起始页码	342
结束页码	353
卷号	516
英文摘要	Study of the occurrence and formation of sedimentary organic matter in the Sichuan Basin, southern China, provides valuable insights into the biological sources and compositions of Neoproterozoic to Lower Cambrian shales. Rock samples from two sets of shales in the Sichuan Basin and adjacent areas, including the Ediacaran Doushantuo shale and the Lower Cambrian Qiongzhusi shale in the Gaoshiti-Moxi and Ziyang-Weiyuan areas were collected and geochemically analyzed in this study. The distribution of biomarkers, stable carbon isotope compositions and microfossil characteristics reveal that eukaryotic algae including chlorophytes, pelagophyceae, dinoflagellates, diatoms (or their ancestors) and sponges proliferated widely during the Late Neoproterozoic to Early Cambrian in the Sichuan Basin. Cyanobacteria, some α-Proteobacteria, rhizobiales and aerobic methanotrophs also made a contribution to organic matter in the studied shales. Aerobic methanotrophs that utilize 13C-depleted substrates such as CH4 as carbon sources may have been the cause of anomalous 13C-depleted kerogen in the study area. © 2018 Elsevier B.V.
英文关键词	Carbon isotope composition; Eukaryotic algae; Prokaryote
语种	英语
scopus关键词	alga; biogenic structure; biomarker; biostratigraphy; Cambrian; eukaryote; microfossil; prokaryote; Proterozoic; sediment chemistry; shale; China; Sichuan Basin; algae; Alphaproteobacteria; Bacillariophyta; Chlorophyta; Cyanobacteria; Dinophyceae; Eukaryota; Pelagophyceae; Prokaryota; Rhizobiales
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151082
作者单位	State Key Laboratory of Petroleum Resources and Prospecting, College of Geosciences, China University of Petroleum, Beijing, 102249, China; Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, College of Resources and Environment, Yangtze University, Wuhan, 430100, China; Exploration and Development Research Institute of Southwest Oil & Gas Field Company, PetroChina, Chengdu, Sichuan 610041, China; Central Sichuan Oil & Gas Field, PetroChina Southwest Oil & Gas Field Company, Suining, 629000, China
推荐引用方式 GB/T 7714	Wang N.,Li M.,Hong H.,等. Biological sources of sedimentary organic matter in Neoproterozoic–Lower Cambrian shales in the Sichuan Basin (SW China): Evidence from biomarkers and microfossils[J],2019,516.
APA	Wang N..,Li M..,Hong H..,Song D..,Tian X..,...&Wang M..(2019).Biological sources of sedimentary organic matter in Neoproterozoic–Lower Cambrian shales in the Sichuan Basin (SW China): Evidence from biomarkers and microfossils.Palaeogeography, Palaeoclimatology, Palaeoecology,516.
MLA	Wang N.,et al."Biological sources of sedimentary organic matter in Neoproterozoic–Lower Cambrian shales in the Sichuan Basin (SW China): Evidence from biomarkers and microfossils".Palaeogeography, Palaeoclimatology, Palaeoecology 516(2019).