Carbonate diagenetic textures from nearsurface diagenetic environments
Understanding the processes and products of carbonate diagenesis is essential to exploration for, and optimum development of, hydrocarbon reservoirs in carbonate rocks. Much cementation and formation of secondary porosity in carbonates occurs at relatively shallow depths in one of four major diagenetic environments: the vadose zone, meteoric phreatic zone, mixing zone, and marine phreatic zone. Most carbonates are deposited in and begin their diagenetic history in the marine phreatic environment. With subaerial exposure, fresh water will replace sea water in the pores of shallow-water carbonates, and a zone of mixed fresh and marine waters may form. Diagenesis in the freshwater phreatic environment may involve leaching in the zone of solution, neomorphism of grains accompanied by extensive intergranular calcite cementation in the active saturated zone, or neomorphism of grains without cementation in the stagnant saturated zone.
- Research Organization:
- Cities Service Research Lab., Tulsa, OK
- OSTI ID:
- 7048842
- Journal Information:
- Am. Assoc. Pet. Geol. Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol. Bull.; (United States) Vol. 64:4; ISSN AAPGB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020200* -- Petroleum-- Reserves
Geology
& Exploration
AIR
ALKALINE EARTH METAL COMPOUNDS
BUILDING MATERIALS
CALCITE
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATE ROCKS
CARBONATES
CEMENTS
CHALCOGENIDES
CLIMATES
DIAGENESIS
DOLOMITE
ENVIRONMENT
EXPLORATION
FLUIDS
GASES
GEOLOGIC DEPOSITS
HYDROGEN COMPOUNDS
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MATERIALS
MINERAL RESOURCES
MINERALS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM DEPOSITS
POROSITY
RESERVOIR ROCK
RESOURCES
ROCKS
SEDIMENTARY ROCKS
WATER