试论凡口大型层控铅锌矿床的地质特征及矿床成因
GEOLOGIC CHARACTERISTICS AND GENESIS OF HUGE STRATA-BOUND LEAD-ZINC ORE DEPOSIT OF FANKOU, GUANGDONG
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摘要: 凡口大型层控铅锌矿床位于广东省北部,中上泥盆纪湘、桂、粤海盆的东部边缘。产于加里东运动后中上泥盆系近底部的碳酸盐岩中。有关它的成因曾提出过礁控成矿、成岩改造及火山成矿等见解。笔者两年来做了较多研究工作,本文将对地质特征和矿床成因于以讨论。Abstract: The huge lead and zinc deposit of Fankou, Guangdong is a strata-bound ore deposit located in carbonate rocks of Middle -Upper Devonian series. The orebody chiefly appears in the transition zone between the carbonate rock and the fragme-ntal rock, and also in the carbonate rock. The orebody is controlled by faults.The ore-bearing rocks mostly are micrites with a great deal of algaes and contain a good few of terrigenous clastic and carbonaceous sediments. The dolomitization of the ore-bearing rocks is not intense. There are, however, residues of wall rocks in the orebody which is bordered by joints on the surrounding rock.
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[1] (1)中国科学院地球化学研究所有机地球化学研究室,198:3,有机地球化学,科学出版社.
(2)刘宝裙主编1980,沉积岩石学、地质出版社.
(3)王英华等,1983,氧、碳同位素组成在研究碳酸盐岩成宕作用中的意义,地质评论、29卷第3期。
(4)H. Skall,1975, The paleoewironment of the Pine Point Lead-Zine District,ECONOMIC GEOLOGY 1973.N0.1. -

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