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一、引言解放以来先后在甘肃东部天水地区(以下简称本区)的陈家庙、温家沟、关子镇、范家寺-武家河-带以及武山的何家沟、党川以南的寺沟等地,发现了许多铁矿点。这些矿点历经甘肃地质局、冶金局所属队多次反复工作,有的己具工业意义,有的具有远景,正在探查。对于这些铁矿一般都定为鞍山式-沉积变质型。个别地段,在同一矿点的不同矿体,则分别定为“沉积变质”和矽卡岩型。甚至有些地质工作者根据鞍山式铁矿均赋存在前震旦纪地层中的规律,来反证本区的地层时代。
I. INTRODUCTION Chenjiamiao, Wenjiagou, Guanzi Town, Fanji Temple - Wujiahe - Belt along Tianshui area in the east of Gansu province (hereinafter referred to as this area) and Hejiagou of Wushan and temples south of Dangchuan Ditch and other places, found a number of iron ore spots. These mines, after the Gansu Geological Bureau and the Metallurgical Bureau belong to the same team, repeatedly work repeatedly, some of which have industrial significance and some have long-term prospects and are exploring. For these iron ore are generally classified as Anshan - sedimentary metamorphism. In different locations, different ore bodies in the same ore deposit are respectively classified as “sedimentary metamorphism” and skarn type. Some geologists even counterclaim the stratigraphic age of the area according to the law of Anshan-type iron ore existing in the Pre-Sinian strata.