楚雄盆地铜、膏盐、有机矿床组合地球化学

康滇古大陆裂谷的发生和发展造就了楚雄盆地，沉积了煤、铜、盐旋回与含矿建造，形成了铜、膏盐、有机矿床组合。矿床地球化学及有机地球化学研究表明：表生的或地层中的或深部的铜、盐、有机质以微量遍布于楚雄盆地中生代各地层中，在适宜的古气候、岩相古地理环境则富集成矿，三者在诸矿床中互相渗透、互相依存。三类矿床都经历了沉积－成岩－改造生成过程并受同步热演化。矿床组合遵循“金属－盐－有机沉积－成岩－改造”成矿机制。

GEOCHEMISTRY OF THE ASSOCIATED COPPER, SALINE AND ORGANIC DEPOSITS IN THE CHUXIONG BASIN, YUNNAN, CHINA

The occurrence and development of paleo continental rift in the Kangdian region brought up a Chuxiong basin, deposited cycles and ore bearing formations of coal, evaporite and copper, and formed the associated organic, copper and saline deposits. Studies of ore deposit geochemistry and organic geochemistry show that the copper, salt and organic matter form the surface, strata or hypogene fluid were generally distributed over the Mesozoic stratum in the Chuxiong basin in trace amount and concentrated into ore deposits in the proper paleoclimatologic and lithofacies paleogeographical environment. The three kinds of matter depended on each other for existence in their ore deposits. The three ore deposits all went through sedimentary,diagenetic and reworked metallizations and all underwent through the same thermal evolution. The genesis of these deposits accords with the mechanism of metal salt organic matter interaction and sedimentary diagenetic reworked metallization.