论卡以头组

卡以头组为介于宣威组和东川组之间的一个岩石地层单位 ,主要为黄绿色、灰绿色、褐黄色夹紫红色砂岩、砾岩和泥质岩组合 ,海相层底部夹少量灰岩 ,不含煤层和 Claraia。该组为晚二叠世—早三叠世沉积 ,海相多为早三叠世地层。建议以威宁哲觉剖面为卡以头组的标准剖面

ON KAYITOU FORMATION

Origin, meaning and feature of the Kayitou Formation were introduced.Its typical section was suggested. The Kayitou Formation is a transitional lithostratigraphic unit between the Xuanwei Formation and Dongchuan Formation.Rocks of the Kayitou Formation are yellow green,grey green,brown yellow intercalary purplish sandstone,conglomerate,argillite,there are few limstones at the bottom of marine Kayitou Formation, but its has not coal bed and Claraia. This formation was deposited from Late Permian to Early Triassic.The marine Kayitou Formation is usually of Lower Triassic age. Zhejue section in the Weining Country was suggested to be used as the typical section for the Kayitou Formation.