南沱组

广西北部分布着下震旦统两套厚度大的杂砾岩系，即长安组与南沱组，均由含砾泥质岩、含砾砂岩及其夹一些砂。泥岩组成。

Two thick polycomponent conglomerate formations of Lower Sinian ( ie , the chang an Formation and the Nantuo Formation ) are distributed in Northern Guangxi .

新元古代南沱组冰碛层之上的盖帽白云岩在全球分布广泛，碳稳定同位素表现出强烈的负偏移，其成因被认为与甲烷的碳源有关。

Cap dolomite , overlying global later Neoproterozoic glacial depositions , occurs worldwide with ( signi - ) ficant stable carbon isotopic negative excursion caused most likely by the methane .

分布于甘肃文县一带的原“碧口群”据岩性、层位特征及微古植物化石厘定为震旦系，并可进一步划分出南沱组、陡山沱组、灯影组。

The " Bikou group " that distributed in Wenxian county of Gansu , on the basis of the features of lithology and sequence and micropaleoflora , should be named the Sinian .

矿床产于印支期大神山花岗岩株外接触带之震旦系下统南沱砂岩组中。

This deposit occurs in Lower Sinian Nantuo sandstone at the exocontact zone of an Indosinian Dashenshan granite stock .