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一、前言在伟大领袖和导师毛主席关于“开发矿业”的指引下,在绵延千里的祁连山,发现了丰富的矿产资源,浅变质的沉积变质型铁矿尤为广泛。然而,对于这个巨厚含铁岩系的研究则比较差,以致长期以来,未能弄清它所形成的地质时代和层位,前人主要是根据岩性多划为早古生代或寒武-奥陶系。其实,含丰富化石的早古生代地层不仅在沉积建造上与含铁岩系有所不同。其间被区域性断裂相隔,而且至今尚未见有可采规模的铁矿;在分布广泛的含铁岩系内,却又未发现过早古生代的化石(图1)。
I. Foreword Under the guidance of “developing mining industry” under the guidance of “developing mining industry”, great leaders and supervisors Chairman Mao have found abundant mineral resources in the Qilian Mountains stretching for thousands of miles. The metamorphic sedimentary metamorphic iron mines are especially extensive. However, the research on this huge thick iron-bearing rock series is rather poor, so that it has not been able to find out the geologic age and horizon it formed for a long time. The predecessors mainly classified as Early Paleozoic or Cambrian according to lithology, Ordovician. In fact, the rich Paleozoic Early Paleozoic strata not only sedimentary construction and iron-bearing rock series are different. In the meantime, they are separated by regional faults, and so far there are no iron ore mines available in scale. In the extensive iron-bearing rock series, no premature paleozoic fossils have been found (Fig. 1).