Bacterial Mechanism of the Development of Sulfate Karst in Burial Environment
ZHANG Feng-e
ZHANG Sheng
QI Ji-xiang
ZHANG Yun
SONG Shu-hong
Abstract：The present work is designed to simulate the dissolution of sulphate rock under various conditions of different bacteri-al cell numbers, temperatures and reaction times both in water-rock and water-rock-bacteria systems by laboratory experiment.The results show that chemical dissolution of sulphate rock is dominated in water-rock system, while bacterial sulphate reduc-tion process and the dissolution of sulphate rock driven by bacterial sulphate reduction are dominated in water-rock-bacteria sys-tem. The dissolution of sulphate rock driven by bacterial sulphate reduction resultes in the formation of sulphate karst, whichenhances the permeability of carbonate rock coexisted with sulphate rock. The research is an insight into biokarst, which pro-vides a new perspective for the field of petroleum geology.
Keywords：sulfate karstsulfate-reducing bacteria (SRB)bacterial sulfate reductionwater-rock-bacteria systemburial envi-ronmenthydrogeology.
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 146-154 )