气候变化领域集成服务门户(CCPortal): Climate-induced organic matter enrichment in lacustrine basin: Insights from the Palaeogene-Neogene oil shale in the Lunpola Basin (Tibet, China)

CCPortal

DOI	10.1002/gj.4758
	Climate-induced organic matter enrichment in lacustrine basin: Insights from the Palaeogene-Neogene oil shale in the Lunpola Basin (Tibet, China)
	Lu, Jiang; Fu, Xiugen; Du, Qiuding; Nie, Ying; Wei, Hengye; Zhou, Gang; Wang, Wenzhi
发表日期	2023
ISSN	0072-1050
EISSN	1099-1034
起始页码	4057
结束页码	4069
卷号	58 期号:11
英文摘要	Lacustrine rift basins are ideal continental settings for understanding organic matter (OM) accumulation mechanisms, because lacustrine deposits are most sensitive to variable climatic and palaeoenvironmental conditions. The Lunpola Basin is a Cenozoic lacustrine rift basin with widespread oil shale depositions that provide a valuable example of triggering factors that controlled OM accumulation. In the investigated interval of the basin, high Si, Ti, Zr, Th, Al and rare earth element concentrations suggest high clastic fluxes during the oil shale deposition. These high clastic fluxes could be attributed to warm and humid climates due to high values of ln(Al2O3/Na2O) and C-value (? (Fe + Mn + Cr + Ni + V + Co)/? (Ca + Mg + Sr + Ba + K + Na)). The Lunpola shales and oil shales were deposited in saltwater environments under enhanced dysoxic to anoxic conditions with high palaeoproductivity. In the Lunpola Basin, climate warming can be subdivided into two different stages based on C-value and ln(Al2O3/Na2O) variations. Each stage is consistent with an increase in the primary productivity of the palaeolake. Thus, a model for climate-induced OM enrichment in lacustrine rift basins is proposed, which indicates that climate and primary productivity are the key factors controlling OM accumulation.
关键词	climate warming hydrological cycle lacustrine rift basins organic matter accumulation palaeoproductivity
英文关键词	OCEANIC ANOXIC EVENT; BLACK SHALES; SEDIMENTATION-RATE; REDOX CONDITIONS; SOURCE ROCKS; GEOCHEMISTRY; PRODUCTIVITY; ACCUMULATION; PRESERVATION; EOCENE
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000980576800001
来源期刊	GEOLOGICAL JOURNAL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283370
作者单位	Southwest Petroleum University; Southwest Petroleum University; Southwest Petroleum University; China National Petroleum Corporation; Southwest Petroleum University
推荐引用方式 GB/T 7714	Lu, Jiang,Fu, Xiugen,Du, Qiuding,et al. Climate-induced organic matter enrichment in lacustrine basin: Insights from the Palaeogene-Neogene oil shale in the Lunpola Basin (Tibet, China)[J],2023,58(11).
APA	Lu, Jiang.,Fu, Xiugen.,Du, Qiuding.,Nie, Ying.,Wei, Hengye.,...&Wang, Wenzhi.(2023).Climate-induced organic matter enrichment in lacustrine basin: Insights from the Palaeogene-Neogene oil shale in the Lunpola Basin (Tibet, China).GEOLOGICAL JOURNAL,58(11).
MLA	Lu, Jiang,et al."Climate-induced organic matter enrichment in lacustrine basin: Insights from the Palaeogene-Neogene oil shale in the Lunpola Basin (Tibet, China)".GEOLOGICAL JOURNAL 58.11(2023).