摘要
中亚独联体五国 :哈萨克斯坦、乌兹别克斯坦、吉尔吉斯坦、土库曼斯坦和塔吉克斯坦的中亚大陆地壳构造单元 ,其中分布着大批砂岩型铀矿床和碱交代岩型、含铀煤岩型、含鱼残骸泥岩型和碳酸盐岩型铀矿床 ,计百余个。这些矿床的铀储量约占全球总工业铀储量的30 %。文中划分出8个铀矿域 ,编制了各铀矿域的成矿大地构造剖面 ,并进行了对比研究 ;对上述五种主要铀矿床类型的成矿学特征作了概述 ;归纳出四种铀成矿大地构造模式 ,指出除地台型模式外 ,其余的地槽 +地洼型、地台 +地洼型、地洼型等三种模式均与地洼阶段的构造—岩浆活化作用密切相关 ,甚至是形成工业铀矿床最至关重要的背景因素。文中最后还对中亚型和华夏型地洼铀成矿学的异同特点 ,作了对比分析。
In Central Asia five countries of CIS,there occur over 100 uranium deposits of different types:sandstone,alkaline metasomatic rock,uranium and coal-bearing rock,fish fossil-bearing mudstone and carbonate rock,of which uranium reserver is about 30%global uranium industrial reserves.Eight uranium metallogenic provinces are compiled,and making a contrast study,summarizing metallogenic characteristics of five principal uranium deposits types above metioned,summing up four geotectonic models of uranium metallogeny.It is pointed out that,except platform+diwa type and diwa type,all are closely related to tectono-magmatic activization in diwa stage,so far as to be a crucial factor forming industrial uranium deposit.Finally a contrasting analysis of differences of diwa uranium metallogeny between Central Asian and Cathaysian types is made.
出处
《大地构造与成矿学》
EI
CAS
CSCD
2000年第1期1-8,共8页
Geotectonica et Metallogenia
关键词
铀成矿
大地构造背景
中亚五国
铀矿床
Five countries in Central Asia,geotectonic background,uranium metallogeny
