中文摘要：

利用重矿物及其组合、砂岩碎屑组成和岩石地球化学等资料对鄂尔多斯盆地黄陵地区三叠系延长组长6浊积岩的物源进行研究,发现长6油层组总体上稀土总量为中等—较高,轻、重稀土分馏不明显,为铕微正异常的弱右倾稀土谱型;泥岩w（Nb）/w（Ta）,w（Th）/w（U）,w（La）/w（Sm）,w（Hf）/w（Th）和w（Gd）/w（Yb）（大部分大于2）等微量元素比值表明其与盆地东北缘造山带的太古界和元古界变质岩具有良好的亲缘性;浊积砂岩样品大部分落在隆升基底区域内。岩石地球化学特征、源区性质和构造背景共同表明,黄陵地区延长组长6浊积岩物源主要来自盆地东北部基底隆升的造山带。

英文摘要：

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 EREE 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 w（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.