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拉纳山地层剖面,位于巴塘县东北约28公里,滨金沙江之东。以前,小、中比例尺地质调查时均列为标准剖面之一,并被引用,由于工作关系,笔者有幸对其重新研究,获得了一些新认识,现阐述如下。 地层剖面综述 39.灰色、深灰色含炭质板岩夹灰色变长石岩屑砂岩及少量煤线。含植物Sinoctenis~lcalophlla Wu et Lih,S.cf.calophglla Wu et Lih。顶被断失。 >120.10m 38.紫红色变中酸性含角砾层凝灰岩夹粉砂质板岩。含叶肢介Eustheria sp.,植物?Glossophyllum sp.。 32.33m 37.灰色变复成分砾岩,灰黄色变岩屑杂砂岩,深灰色泥质绢云板岩不等厚韵律层。含瓣鳃Unionites sp.。 26.45m 36.褐灰色硅化泥晶藻屑灰岩。含瓣鳃Unionites sp.。 10.37m 35.灰色变复成分岩屑砾岩,灰黄色变岩屑杂砂岩,深灰色泥质绢云板岩韵律层。含瓣鳃
Larn Hill stratigraphic section, located in Batang County, about 28 kilometers northeast of Binjiang Shajiang East. Previously, small and medium-scale geological survey are listed as one of the standard profiles, and is cited, due to the work of the relationship, I was fortunate enough to re-study, gained some new understanding, are described below. Stratigraphic Section Overview 39. Gray, dark gray carbonaceous slate sandstone with gray capillaris and a small amount of coal line. Contains plants Sinoctenis ~ lcalophlla Wu et Lih, S..cf.calophglla Wu et Lih. Top was lost. > 120.10m 38. Mauve changeable acidic breccia tuff sandstone with silt sandstone. Eustheria sp., Plant? Glossophyllum sp. 32.33m 37. The gray-graded complex conglomerate, the greyish-yellowed cuttings mixed sandstone, the dark gray muddy sericite slate with the unequal thickness prosodic layer. Unionites sp. 26.45m 36. Brown gray silicified algae algae debris limestone. Unionites sp. 10.37m 35. Gray-grained rock fragments, greyish-yellowed rock fragments, dark-gray muddy sericite slate layers. Flap gill