摘要
华南地区石炭系碳酸盐岩的成岩后生作用可划分为不同阶段,具有一定规律。其中,不同产状、多种(成因)类型白云岩组成的复合体,是多种地质作用叠加的产物。成岩晚期的白云岩孔隙发育,可成为良好的储矿场所。
The present artical was result of systematically examining some stratigraphiccross-sections through quite a few individul Carboniferous sequences across someprovinces in South China.The South China carbonates may be divided into variousepisodes in terms of diagenetic epigenesis,which featured the episodic aspects ofspecially Middle and Upper Carboneferous sequences and gave their regularities in thisway.These regularities finally led to envisagement of a evolutionary model for theirdiagenetic epigenesis.South China generally is laden somewhere with Carboniferous dolomite,letalone of Middle and Upper Carboniferous ages.These,though differing from eachother in spatial distribution and diagenetic styles,usually occur together as compositeterrains which are reasonably attributed to superposition of different tectonisims.Meanwhile,penesyngenetic and diagenetic dolomites were given an emphasis ondescription.They are obvionsly lithobound,that is,different lithotyped dolomitesdisplay different ore-controls,particularly those,which are well-developed inporasity,thereby possibly acting as patential traps for ore-forming fluid.
