Primary depositional intergranular pore systems
markedly impact porosity and permeability, influence diagenetic processes and
control recovery of resources in many reservoir and aquifer systems. In this pioneering study, Twenhofel
Medalist Paul Enos and Sawatsky (1981) explored the depositional
aspects of porosity and permeability by documenting their change in different
Holocene carbonate sediment textures.
The results indicated that carbonate mud-rich sediment (fine wackestone)
includes the highest porosity (with up to 70%); mud-free grainstone includes
40-50% porosity. The results
provided information on the baseline initial conditions of sediment porosity,
for comparison with changes in porosity with compaction and diagenesis.
Pore networks in Holocene carbonate sediments by Paul Enos and L.H. Sawatsky
Journal of Sedimentary Petrology, v. 51, p. 961-985.
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