山东枣庄市楼山水泥用灰岩矿地质特征及成因

THE GEOLOGICAL FEATURE AND GENESIS OF LOUSHAN CEMENT LIMESTONE IN ZAOZHUANG,SHANDONG

楼山水泥用灰岩矿赋存于古生代寒武纪九龙群张夏组地层中,层状产出。自下而上可分为(1)、(2)两个矿层。(1)矿层赋存于张夏组下段,(2)矿层赋存于张夏组上段,矿石组分以方解石为主,白云石次之,矿石以Ⅰ级品为主质量良好。该灰岩矿层控特征明显,矿层产状与地层产状一致,矿床成因属海相化学沉积型。

Loushan cement limestone deposit is bedded in Paleozoic Cambrian Jiulong Group Zhangxia Formation,which can be divided ascendingly into（1）,（2） 2 ore beds. The ore bed（1） is in Zhangxia Formation Lower Member,whereas the ore bed（2） in Zhangxia Formation Upper Member. The major ore is calcite,the minor one is dolomite. The ore grade is mainly in order 1,with good quality. The stratabound feature of it is clear,the occurrence is consistent with that of the rock bed. It is a marine facies chemical sedimentary deposit.