Geochemistry of the upper Permian sandstones in the Dalong Formation in the South Yellow Sea Basin, East China: implications to provenance, weathering, and tectonic setting

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	Geochemistry of the upper Permian sandstones in the Dalong Formation in the South Yellow Sea Basin, East China: implications to provenance, weathering, and tectonic setting
	Yuxiao HUANG ; Xingwei GUO ; Xunhua ZHANG ; Laixing CAI
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2021-05-15
出版年	2021
卷号	v.39 期号:03 页码:31-46
文献类型	CNKI期刊论文
摘要	To reconstruct the paleoenvironment, the petrography and geochemical compositions of the upper Permian Dalong Formation(Fm)(P_3d) sandstones in the Central Uplift, South Yellow Sea Basin, was investigated, after which the provenance, tectonic setting, weathering conditions, and diagenetic history were determined. The Dalong Fm is mainly composed of sandstones with a few mudstones and limestones. The petrographic analysis showed that the P_3d sandstones are in low maturity and could be classified into feldspar sandstone and lithic sandstone on average framework composition of Q_(63)F_(16)L _(21). The major and trace element results show that Dalong Fm sandstones are enriched in Rb and depleted in Cr and Ni compared with the upper continental crust(UCC). The chemical weathering intensity is weak to low moderate in the source area as indicated by the chemical index of alteration(CIA) and other results from a variety of methods. The diagenetic process included three main stages: eodiagenesis, mesodiagenesis, and telodiagenesis. Tectonic discrimination plots show that the source areas were an active continental margin(ACM) and a passive continental margin(PCM), which may have been related to the northward movement of the Lower Yangtze Plate(LYP) and the collision between the LYP and the North China Plate(NCP).
关键词	rock geochemistry rock weathering tectonic setting evolution of rock South Yellow Sea Basin
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;A011;
CNKI专题名称	海洋学;地质学;
分类号	P736
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the Shandong Provincial Natural Science Foundation,China (No. ZR2018BD026) ; the National Marine Geology Special Project (No. DD20190377)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187765
专题	中国科学院海洋研究所
作者单位	1.OceanUniversityofChina 2.QingdaoInstituteofMarineGeology 3.LaboratoryforMarineMineralResources,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 4.InstituteofOceanology,ChineseAcademyofSciences
推荐引用方式 GB/T 7714	Yuxiao HUANG,Xingwei GUO,Xunhua ZHANG,et al. Geochemistry of the upper Permian sandstones in the Dalong Formation in the South Yellow Sea Basin, East China: implications to provenance, weathering, and tectonic setting. 2021.