Changes

An interplay of hydrologic and biologic factors produces carbonates in place. Deposition of carbonate sediments is limited to water that is warm, shallow, clear, sunlit, and free of suspended clay. When these conditions prevail, carbonates accumulate rapidly.

An interplay of hydrologic and biologic factors produces carbonates in place. Deposition of carbonate sediments is limited to water that is warm, shallow, clear, sunlit, and free of suspended clay. When these conditions prevail, carbonates accumulate rapidly.

==Basic carbonate facies zones==

==Basic carbonate facies zones==

* A landward low-energy zone

* A landward low-energy zone

Depositional slope, geologic age, water energy, and climate control the basic facies pattern. The diagram below shows typical carbonate facies that develop within the three zones.

Depositional slope, geologic age, water energy, and climate control the basic facies pattern. [[:file:predicting-reservoir-system-quality-and-performance_fig9-66.png|Figure 1]] shows typical carbonate facies that develop within the three zones.

[[file:predicting-reservoir-system-quality-and-performance_fig9-66.png|thumb|{{figure number|9-66}}After .<ref name=ch09r52>Sarg, J., F., 1988, Carbonate sequence stratigraphy, in Wilgus, C., K., Hastings, B., S., Kendall, C., G. St. C., Posamentier, H., W., Ross, C., A., Van Wagoner, J., C., eds., Sea Level Changes: An Integrated Approach: SEPM Special Publication 42, p. 155–182.</ref> Copyright: SEPM.]]

[[file:predicting-reservoir-system-quality-and-performance_fig9-67.png|thumb|{{figure number|2}}See text for explanation.]]

==Platform or ramp development==

==Platform or ramp development==

The high accumulation rates of carbonate sediments relative to subsidence generate shelf-to-basin submarine topography with a seaward face of variable steepness. As shown in the diagram below, a platform's seaward edge steepens with time because subsidence cannot keep pace with carbonate sedimentation.

The high accumulation rates of carbonate sediments relative to subsidence generate shelf-to-basin submarine topography with a seaward face of variable steepness. As shown in the diagram in [[:file:predicting-reservoir-system-quality-and-performance_fig9-67.png|Figure 2]], a platform's seaward edge steepens with time because subsidence cannot keep pace with carbonate sedimentation.

 

[[file:predicting-reservoir-system-quality-and-performance_fig9-67.png|thumb|{{figure number|9-67}}See text for explanation.]]

==See also==

==See also==