论文部分内容阅读
陕南某铁矿田由若干条带状“磁铁石英岩型”铁矿床所组成。在地质构造位置上,矿田位于南秦岭震旦亚代古火山岛弧的北缘。组成该岛弧的海相火山-沉积岩地层系“勉略群”。它曾受多次变质与形变。
An iron ore field in southern Shaanxi consists of a number of banded “magnetite quartzite” iron deposits. In geological structure, the ore field is located on the northern margin of Sinian Archaean ancient volcanic arc in southern Qinling. The marine volcano-sedimentary strata that make up the island arc are “Mianle Group”. It has been subject to multiple deterioration and deformation.