Burial diagenesis and porosity evolution, upper Jurassic Smackover, Arkansas and Louisiana

Journal Article · Wed Apr 01 04:00:00 EST 1981 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:5569412

Moore, C H; Druckman, Y

The Jurassic upper Smackover ooid-lime-grainstone of the central Gulf Coast has been a major hydrocarbon exploration target for nearly half a century. Study of the geologic and sedimentologic framework, petrography, two-phase fluid inclusions, and trace element and stable isotope chemistry indicates the following diagenetic history. The upper Smackover is a blanket ooid grainstone ranging in thickness from 300 to 400 ft and covering at least 4000 sq mi. Three diagenetic zones are present: (1) a northern zone, dominated by oomoldic porosity and preburial spar cementation; (2) a southern zone, characterized by compaction effects, late subsurface cement, primary porosity preservation, and late secondary subsurface porosity generation; and (3) a transitional zone having characteristics common to both the northern and southern zones. This would include carbonate rocks heretofore thought to be well below the depth of carbonate porosity maintenance because of lithostatic load. 13 figures, 7 tables.

• Research Organization: Louisiana State Univ., Baton Rouge
• OSTI ID: 5569412
• Journal Information: Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 65:4; ISSN AAPGB
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ARKANSAS
CARBONATE ROCKS
DIAGENESIS
EXPLORATION
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGY
HYDROCARBONS
JURASSIC PERIOD
LOUISIANA
MESOZOIC ERA
MINERAL RESOURCES
NORTH AMERICA
ORGANIC COMPOUNDS
PETROGRAPHY
PETROLEUM DEPOSITS
POROSITY
RESOURCES
ROCKS
SEDIMENTARY ROCKS
STRATIGRAPHY
USA