【摘要】 通过对鄂尔多斯盆地天环凹陷中南段长6～长8轻重矿物平面分布特征、岩屑平面展布特征、古河流走向和地震资料的综合分析,比较客观的刻画了该期的沉积物源方向,即长8～长6沉积期存在南东、南西、正西、北西和北东五个方向的沉积物源。更多还原

【Abstract】 Through study the planar distribution of light-heavy mineral,the planar distribution of debris,ancient rivers flow direction and seismic data,The author finded that the chang 6-chang 8 sediments of sourth mindol Tianhuan sag in Ordos basin come from five directions,they are south east sediment source,south west sediment source、west sediment source、north east sediment source and north east sediment source.更多还原