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长期以来,特别是近十年来,对地槽褶皱带超基性岩体的成岩时期及生成地质环境的研究,越来越引起国内外从事地质构造,岩石和矿床学地质工作者的浓厚兴趣和广泛重视.研究地槽褶皱带超基性侵入体的生成地质环境,对认识地槽发展备阶段的岩浆活动特点,以及阐明铬铁矿的区域成矿远景和部署普查、勘探工作,均有重要的意义.关于祁连地槽尤其是北祁连地槽褶皱带的超基性岩的生成地质环境,许多地质工怍者提出各种看法.本文通过对新近资料的整理综合,论述了北祁连地槽褶皱带超基性侵入体的成岩时期及构造控制,同时就区域铬铁矿成矿远景及成矿有利地段提供一些看法,不妥之处希批评指正.
For a long time, especially in the past ten years, the research on the diagenesis period and geological environment of the ultrabasic pluton in the geosynclinal fold zone has attracted more and more interest from geologists who are engaged in geology, rock and mineral deposits at home and abroad It is important to study the geologic environment of the ultrabasic intrusions of the geosynclinal fold belt and to understand the characteristics of the magmatism in the preparatory stage of the geosynclinal development as well as to clarify the regional mineralization prospects of chromite and to deploy census and exploration work .Through the geologic environment of the ultrabasic rocks in the Qilian Gully, especially in the North Qilian Gobi fold belt, many geotechnical workers have put forward various views.Through the collation and synthesis of recent data, In addition, the diagenesis period and tectonic control of the ultrabasic intrusions in the geosynclinal fold belt are also provided. Some opinions on the regional chromite mineralization prospects and favorable mineralization areas are provided.