中南大学学报（自然科学版）2013，Vol.44Issue(4)：1464-1471,8.
鄂尔多斯盆地黄陵地区三叠系延长组长6浊积岩物源分析
Provenance of Triassic Yanchang Formation Chang 6 turbidite of Huangling area, Ordos Basin
摘要
Abstract
Based on lithogeochemistry, detrital composition of sandstone and other analysis methods, the source of Chang 6 Formation turbidite was studied carefully in Huangling area, Ordos Basin. It is shown that the SREE of Chang 6 mudstones are medium to high, fractional degree of HREE and LREE is not obvious and is of weakly right inclination and weakly positive europium abnormality of rare-earth pattern. Also, according to the analysis of the values of w(Nb)/w(Ta), w(Th)/w(U), w(La)/w(Sm), w(Hf)/w(Th) and u>(Gb)/w(Yb) (most values are larger than 2) in Chang 6 mudstones, it is confirmed that Chang 6 mudstones and Archeozoic Proterozoic metamorphic rocks of orogenic belt in Northeastern Margin of Ordos Basin have a close relationship. The sandstone samples fall in the region of the basement uplift on the diagram. Through comprehensive analysis of the characteristics of lithogeochemistry, the nature of source area and the tectonic setting, the turbidite of Chang 6 Formation are mostly from the orogenic belt in Northeastern Margin of the Ordos Basin.关键词
鄂尔多斯盆地/浊积岩/长6油层组/岩石地球化学/重矿物/物源分析Key words
Ordos Basin/ turbidite/ Chang 6 Formation/ lithogeochemistry/ heavy mineral/ provenance analysis分类
天文与地球科学引用本文复制引用
刘锦,冯娟萍,李文厚,郭艳琴..鄂尔多斯盆地黄陵地区三叠系延长组长6浊积岩物源分析[J].中南大学学报（自然科学版）,2013,44(4):1464-1471,8.基金项目
陕西省教育厅专项科研计划项目(09JK567) （09JK567）
国家自然科学基金联合资助项目(41173035) （41173035）
