The 3rd member of Yingcheng Formation was detailed studied by large scale mapping of lithology and lithofacies, 2D surveying of small lithology and lithofacies section and identifying rocks.

• 摘要通过大比例尺野外岩性岩相填图、掌子面二维岩性岩相描述和详细岩矿鉴定，研究营城组三段内幕。