那坡县坡荷至龙合公路约1公里处,发现上泥盆统融县组下段薄层灰岩与基性熔岩呈沉积接触。 坡荷位于德龙—坡荷背斜的北端,该背斜轴部出露寒武系,两翼为泥盆系,坡荷附近出露上泥盆统融县组下段和基性岩体。融县组下段岩性为灰岩、白云质灰岩,呈浅灰夹浅肉红色,中细粒,薄层状,扁豆状构造,层理清楚。岩层风化表面缝合线构造发育。局部见灰岩层间夹透镜状 Napo slope to Longhe Road about 1 km and found that the Lower Devonian Rongxian Formation thin layer of limestone depositional contact with the basic lava. The slope load is located at the northern end of the Delong-Pohe anticline. The anticlinal axis is exposed from the Cambrian, with Devonian systems on both wings, and the lower part of the Devonian Rongxian Formation and the basic rock mass exposed near the slope load. The lower part of Rongxian Formation is composed of limestone and dolomitic limestone, with light gray folder with light red, medium-fine grain, thin layer and lenticular structure with clear bedding. Rock formation weathered surface suture structure development. Limestone locally see the folder between the lens-like