Dolomite genesis and reservoir-cap rock assemblage in carbonate-evaporite paragenesis system

HU Anping,SHEN Anjiang,YANG Hanxuan,ZHANG Jie,WANG Xin,YANG Liu,MENG Shaoxing

Fig. 7. Samples and pore characteristics of modern microbial carbonate rock in the Bahamas Platform. (a) Lake distribution map on the Crooked Islands of the Bahamas; (b) Geological section A-A′ through the lakes in the Crooked Islands of the Bahamas, the location of the profile is shown in a; (c) Un-petrified microbial mats at the edge of the lake; (d) Partial enlargement of c, mainly composed of marl by microbial adhesion, with a porosity of up to 60%; (e) Petrified microbial rock in the central lake; (f-h) Partial enlargement of e, with the porosity differing widely in different parts, at 54%, 40%, and 14% respectively.