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→Carbonate sediments and environments
==Carbonate sediments and environments==
==Carbonate sediments and environments==
[[file:carbonate-reservoir-models-facies-diagenesis-and-flow-characterization_fig1.png|thumb|left|{{figure number|1}}Dunham's<ref name=pt06r29>Dunham, R. J., 1962, Classification of carbonate rocks according to depositional texture, in, Classifications of Carbonate Rocks—A Symposium: AAPG Memoir 1, p. 108–121.</ref> classification of carbonate rocks according to depositional texture.<ref name=pt06r138>Swanson, R. G., 1981, Sample examination manual: AAPG Methods in Exploration Series, 65 p.</ref>]]
[[file:carbonate-reservoir-models-facies-diagenesis-and-flow-characterization_fig1.png|thumb|left|{{figure number|1}}Dunham's<ref name=pt06r29>Dunham, R. J., 1962, [http://archives.datapages.com/data/specpubs/carbona2/data/a038/a038/0001/0100/0108.htm Classification of carbonate rocks according to depositional texture], in, Classifications of Carbonate Rocks—A Symposium: AAPG Memoir 1, p. 108–121.</ref> classification of carbonate rocks according to depositional texture.<ref name=pt06r138>Swanson, R. G., 1981, Sample examination manual: AAPG Methods in Exploration Series, 65 p.</ref>]]
The majority of carbonate sediments are produced in shallow, warm ocean waters by extraction of calcium carbonate from seawater by organisms to form their shells or skeletal material. The sediments are composed of a spectrum of sizes and pore geometries. The Dunham classification ([[:file:carbonate-reservoir-models-facies-diagenesis-and-flow-characterization_fig1.png|Figure 1]]) describes depositional textures in a manner that can be related to pore geometries. The grain-supported textures tend to have larger pore sizes than do mud-supported textures. The textures have different geometries in different depositional environments.
The majority of carbonate sediments are produced in shallow, warm ocean waters by extraction of calcium carbonate from seawater by organisms to form their shells or skeletal material. The sediments are composed of a spectrum of sizes and pore geometries. The Dunham classification ([[:file:carbonate-reservoir-models-facies-diagenesis-and-flow-characterization_fig1.png|Figure 1]]) describes depositional textures in a manner that can be related to pore geometries. The grain-supported textures tend to have larger pore sizes than do mud-supported textures. The textures have different geometries in different depositional environments.