黔南地区中二叠世碳酸盐台地边缘沉积演化及古海洋意义*
孟琦1,2, 黄恒1,3, 颜佳新1,2, 陈发垚1,2

Sedimentary evolution of the Middle Permian carbonate platform margin in southern Guizhou and its palaeo-oceanographic implications
Meng Qi1,2, Huang Heng1,3, Yan Jia-Xin1,2, Chen Fa-Yao1,2
黔南罗甸地区纳水和沫阳剖面中二叠统岩石学特征(一) A—RT1,基本不含生屑的灰泥岩,NS244-2;B—RT2-1,以海绵骨针为主的粒泥岩,MY39-4;C—RT2-2,以薄壳双壳为主的粒泥岩,MY70-4;D—RT2-3,以钙球为主的粒泥岩,NS193-2;E—RT3-1,含多种生屑颗粒的泥粒岩,NS201-1;F—RT3-2,发育粒序层理的泥粒岩,箭头指示正粒序,NS198-3;G—RT3-3,生物掘穴泥粒岩,MY21-7;H—RT4-1,生屑颗粒砾屑灰岩,MY30-4。Bi: 双壳,Br: 腕足,C: 钙球, F: 有孔虫,Fu:䗴,G: 腹足,T: 管壳石。单偏光,比例尺代 表1 ,mm