论文部分内容阅读
长松坪剖面位于川滇接壤的三江口附近,属云南丽江宝山公社长松坪大队所辖。具有露头好,构造简单,化石丰富,交通方便等特点。地层层序由上而下如下(图1):三叠系北衙组(T_2b) 20.灰(微红)色厚层致密灰岩,局部具微细水平层理,含腕足碎片 >26.3米 19.灰色中一厚层粉晶内屑灰岩(白云质灰岩)及内屑具坎状之粉晶白云岩 185.5米 18.灰色(局部浅红色)中一厚层粉晶鲕粒灰岩 17.1米 17.底部有10厘米之灰绿色含海绿石铁质砂砾岩,其上为灰绿色(少许紫红色)中一细
The section of Changsongping is located near the Sanjiangkou bordering Sichuan and Yunnan and belonging to the Changsongping Brigade of Baoshan Commune, Lijiang, Yunnan Province. With good outcrop, simple structure, rich fossils, convenient transportation and so on. The sequence of the stratigraphic top-down is as follows (Fig. 1): Beiya Formation of Triassic (T_2b) 20. Tight limestone with thick grayish reddish color, with local fine horizontal bedding with> 26.3m 19 A thick layer of finely crystalline intraclaimed limestone (dolomitic limestone) and inner crumbs with a ridged crystalline dolomite of 185.5 m 18. A thick layer of calcareous oolite limestone in gray (partially pale red) 17.1 17. The bottom of 10 cm of gray-green glauconitic sandy conglomerate, which is gray-green (a little purple) in a small