DIAGENESIS IN THE CARBONIFEROUS IN NORTH CHAO COUNTY OF ANHUI PROVINCE
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摘要: 本区碳酸盐岩的主要成岩作用是泥晶化作用、胶结作用、压实-压溶作用和溶解作用.金陵组、和州组下部主要为记晶化作用和强压实作用;和州组上部、黄龙组和船山组主要为压港和强大气淡水胶结作用.高骊山组碎屑岩以压实和溶解作用为主.多期的溶解作用使和州组中、上部孔隙比较发育,孔隙度达14.38%,有望成为本区有利的储集层.Abstract: The main diagenesis of carbonate rocks in the studied area includes micritization,cementation,compaction-pressure solution and dissolution,Jiming Formation and the lower part of Hezhou Formation are dominated by micritization and strong compaction,the upper part of Hezhou Formation,Huanglong Formation and Chuanshan Formation by pressure solution and intense meteoric cementation,and the detrital rock of Gaolishan Formation by compaction and dissoluion.Pores resulted from multistage dissolution in the middle and upper parts of Hezhou Formation was well-developed,and the porosity is up to 14.38%.They will become potential reservoirs of the studied area.
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