【摘要】 赣南寨脑石灰岩矿区位于扬子克拉通和华夏地块之间的兴国旋卷构造区,矿体赋存于石炭统地层中,呈北东走向。矿石类型为白色中-细粒大理岩及灰黑色微晶灰岩,主要有益组份CaO平均含量为50.74%,主要有害组份MgO平均值为1.78%。结合区域资料和前人研究,推测寨脑石灰岩矿形成于物源稳定,水体相对较浅且富氧的半封闭浅海沉积环境。更多还原

【Abstract】 Zhainao limestone deposit in the southern Jiangxi province is located at the Xingguo vortex structure area between the Yangtze craton and Cathaysia block. Ore body of the limestone deposit is distributed in the Carboniferous sedimentary layer, and shows NW strike direction. Ore type is mainly white medium-fine grained marble and grayish black limestone. Average contents of the CaO and MgO are 50.74% and 1.78%, respectively. In combination with regional data and previous studies, it is proposed that the Zhainao limestone deposit was formed in the semi-closed neritic sedimentary environment with the characteristics of the stable provenance, relative shallow water level and oxygen enrichment.更多还原