泰安汶口盆地吴家新庄石膏矿地质特征及成因分析

Analysis on Geological Characteristics and Origin of Wujiaxinzhuang Ore Section in Dawenkou Basin in Tai'an City

摘要:

汶口盆地石膏矿资源储量丰富，吴家新庄矿段为其中少有的开发有利地段。该矿床赋存于古近纪官庄群汶口组第二岩性段中，矿层倾角一般1°～9°，为简单的单斜构造，矿层厚1.86～53.36m，矿段CaSO4·H2O+CaSO4平均品位69.90%，自然品级以三、四级为主。该文从构造、古地理、古气候、物理化学及成矿物质来源4个方面探讨石膏矿床成因，并总结该矿床成因以陆源湖相沉积为主，经后生脱水、水化、交代等多种地质作用形成。

Abstract:

Gypsum resource is very rich in Dawenkou basin, and Wujiaxinzhuang ore section is rare favorable developement area for ore exploration. This deposit occurs in second section of Dawenkou formation in Paleogene Guanzhuang group. Inclination of ore strata is