Thermal maturation by vitrinite reflectance of Woodford shale, Arbuckle Mountains, Oklahoma
- Oklahoma Geological Survey, Norman (USA)
Vitrinite reflectance was measured on 40 grab samples from outcrops of the Woodford Shale (Upper Devonian-Lower Mississippian) collected near the Washita Valley fault in the Arbuckle Mountains in south-central Oklahoma. Samples are widely distributed along 40 km. Sample localities range from 60 m to 7.63 km from the Washita Valley fault. Well-indurated shale samples were collected from below the outcrop surface to reduce the effect of weathering on vitrinite reflectance. Vitrinite reflectance values were measured from standard kerogen concentrate pellets. Implications of the data specific to the Arbuckle Mountains include the Woodford Shale is immature to marginally mature with respect to the generation of liquid hydrocarbons; high heat flow associated with the rifting stage of the southern Oklahoma aulacogen was diminished by Late Devonian; the Woodford Shale was never deeply buried; and frictional heating from the Washita Valley fault did not affect the temperature field significantly.
- OSTI ID:
- 5631944
- Report Number(s):
- CONF-8910195--
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (USA), Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (USA) Vol. 73:9; ISSN AABUD; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020200* -- Petroleum-- Reserves
Geology
& Exploration
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
DEVONIAN PERIOD
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC FORMATIONS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOTHERMAL GRADIENTS
KEROGEN
MACERALS
MATERIALS
MATURATION
MINERAL RESOURCES
MISSISSIPPIAN PERIOD
NORTH AMERICA
OKLAHOMA
OPTICAL PROPERTIES
ORGANIC MATTER
PALEOZOIC ERA
PETROLEUM DEPOSITS
PHYSICAL PROPERTIES
RESOURCES
ROCKS
SEDIMENTARY ROCKS
SHALES
SOURCE ROCKS
TEMPERATURE GRADIENTS
USA
VITRINITE