Laminated black shale-chert cyclicity in Woodford formation (Upper Devonian of Southern Mid-Continent)
Conference
·
OSTI ID:5966126
The Woodford formation, a known hydrocarbon source rock, is contemporaneous with other mid-Paleozoic (Frasnian to Tournasian) black shales occurring throughout North America and Europe. Much of the Woodford formation in outcrop along the southern flank of the Arbuckle uplift (Carter County, Oklahoma) consists of rhythmic alternating beds of laminated black shale and chert. A time series analysis of the chert-black shale couplets displays an approximately 20-ka periodicity, suggesting that deposition was controlled by external orbital forcing of the earth (Milankovitch cyclicity). Total organic carbon ranges from 3 to 9% in the chert and from 10 to 28% in the black shale; carbonate carbon content is essentially zero. Carbon isotope (/delta//sup 13/C = -29 per mil), pyrolysis-gas chromatography, and Rock-Eval analyses indicate that the kerogen is of marine origin and is oil-prone type II. Except for the difference in organic carbon contents, the kerogens of the chert-black shale couplets are analytically similar.
- OSTI ID:
- 5966126
- Report Number(s):
- CONF-880301-
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laminated black shale-chert cyclicity in Woodford Formation (Upper Devonian of southern Mid-Continent)
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Conference
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Sun Jan 31 23:00:00 EST 1988
· AAPG Bull.; (United States)
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Fri May 01 00:00:00 EDT 1981
· Am. Assoc. Pet. Geol., Bull.; (United States)
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Pyrolysis and hydrocarbon source bed potential of the Upper Devonian Woodford Shale, Hovey Channel, southern Permian basin, west Texas
Conference
·
Thu Feb 28 23:00:00 EST 1991
· AAPG Bulletin (American Association of Petroleum Geologists); (United States)
·
OSTI ID:5793628
Related Subjects
04 OIL SHALES AND TAR SANDS
040201* -- Oil Shales & Tar Sands-- Site Geology-- (-1989)
040500 -- Oil Shales & Tar Sands-- Properties & Composition
BITUMINOUS MATERIALS
BLACK SHALES
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHATTANOOGA FORMATION
CHEMICAL COMPOSITION
CHERT
DEVONIAN PERIOD
ENERGY SOURCES
EVEN-ODD NUCLEI
FEDERAL REGION VI
FOSSIL FUELS
FUELS
GEOLOGIC AGES
GEOLOGIC FORMATIONS
GEOLOGY
HYDROCARBONS
ISOTOPES
KEROGEN
LIGHT NUCLEI
MATERIALS
NORTH AMERICA
NUCLEI
OIL SHALES
OKLAHOMA
ORGANIC COMPOUNDS
ORGANIC MATTER
PALEOZOIC ERA
PETROLOGY
PHOSPHATE ROCKS
PHOSPHORITES
ROCKS
SEDIMENTARY ROCKS
STABLE ISOTOPES
UPWELLING
USA
VARIATIONS
040201* -- Oil Shales & Tar Sands-- Site Geology-- (-1989)
040500 -- Oil Shales & Tar Sands-- Properties & Composition
BITUMINOUS MATERIALS
BLACK SHALES
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHATTANOOGA FORMATION
CHEMICAL COMPOSITION
CHERT
DEVONIAN PERIOD
ENERGY SOURCES
EVEN-ODD NUCLEI
FEDERAL REGION VI
FOSSIL FUELS
FUELS
GEOLOGIC AGES
GEOLOGIC FORMATIONS
GEOLOGY
HYDROCARBONS
ISOTOPES
KEROGEN
LIGHT NUCLEI
MATERIALS
NORTH AMERICA
NUCLEI
OIL SHALES
OKLAHOMA
ORGANIC COMPOUNDS
ORGANIC MATTER
PALEOZOIC ERA
PETROLOGY
PHOSPHATE ROCKS
PHOSPHORITES
ROCKS
SEDIMENTARY ROCKS
STABLE ISOTOPES
UPWELLING
USA
VARIATIONS