摘要
“马平群”地层广泛出露于滇东南地区,均为连续而单一的碳酸盐岩相,生物化石丰富,以(竹蜓)类、珊瑚为主,还有有孔虫、海百合、腕足类等,说明在这一地史时期,该区环境为稳定的浅海陆棚区,局部为台缘浅滩相,或盆地斜坡相。在陆棚区,(竹蜓)、珊瑚等尤为发育,形成滩礁生物灰岩;在八宝安乐剖面,夹有硅质条带灰岩,产牙形刺,可能为盆地斜坡相。该区是研究马平群生物演化,进行地层划分和对比的理想场所。笔者在砚山、广南。
The strate of 'Maping Group' are widely outcropped in southeastern Yun nan, which is the ideal area for studying the biological evolution,stratigraphic division and correlation of 'Maping Group'. The authors have surveyed 4 stratigraphic sections containing 'Maping Group' in Yanshan, Guangnan, Malipo and Napo. This paper details the Liangshuijing section in Yanshan. Investigators have presented many different ideas about the stratigraphic divison and the geological age of 'Maping Group'. This paper puts forward a division scheme as follows.
出处
《云南地质》
1989年第2期117-131,共15页
Yunnan Geology
