南京珠山“皱纹青石”南京东南郊的珠山绵延分布大块的薄灰岩层，其层理曲折起伏千姿百态，当地人称“皱纹青石”．经研究考察，该岩层属下三叠统青龙组南陵湖段，是由早三叠世晚期热带一亚热带浅海碳酸盐软泥沉积形成．据资料推测，当时该地处于气温较高的浅海，海水温暖... Nanjing Zhu Shan “Wrinkles bluestone” In the southeastern suburbs of Zhu Shan in southern China stretches large thin layer of thin limestone layers, the layers of winding ups and downs in different poses and with different expressions, the locals called “wrinkled bluestone.” After investigation and study, this rock formation belongs to the Lower Triassic Qinglong Formation in the Nanling Lake, which was formed by the deposition of shallow-sea carbonate slime in the Tropic-Subtropical Zone in the late Triassic. According to the data speculated that when the place is in the shallow sea of ​​high temperature, warm sea water ...