Nature of migrabitumen and their relation to regional thermal maturity, Ouachita Mountains, Oklahoma
Journal Article
·
· Energy Sources; (United States)
- Oklahoma Geological Survey, Norman, OK (United States)
- Univ. of Oklahoma, Norman, OK (United States)
Two grahamite and three impsonite localities are within an 82-km-long segment of the Ouachita Mountains of southeastern Oklahoma. Grab samples were collected to study the petrographic and geochemical characteristics of the migrabitumen at the grahamite-impsonite transition and the relation of the migrabitumen to the regional thermal maturity pattern. Maximum and random bitumen reflectance values increased from 0.75 to 1.80% from west to east, consistent with the regional thermal maturation trend. Mean bireflectance values increased from 0.04 to 0.38%. The two grahamite samples are classified at the grahamite-impsonite boundary with conflicting petrographic (bitumen reflectance) and bulk chemical (volatile matter) maturity indicators. The regional maturation trend, based on vitrinite reflectance and bitumen reflectance values, was confirmed by a detailed geochemical investigation of bitumen extracts. Although biomarker analyses were influenced by extensive biodegradation effects, molecular parameters based on the phenanthrenes, dibenzothiophenes, and tricyclic terpanes were identified as useful maturity indicators.
- OSTI ID:
- 6424585
- Journal Information:
- Energy Sources; (United States), Journal Name: Energy Sources; (United States) Vol. 15:2; ISSN 0090-8312; ISSN EGYSAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
04 OIL SHALES AND TAR SANDS
040200* -- Oil Shales & Tar Sands-- Reserves
Geology
& Exploration
040500 -- Oil Shales & Tar Sands-- Properties & Composition
BIOLOGICAL MARKERS
BITUMENS
CHEMICAL ANALYSIS
CHEMISTRY
CHROMATOGRAPHY
DATA
DEVELOPED COUNTRIES
EXPERIMENTAL DATA
GEOCHEMISTRY
GEOLOGIC DEPOSITS
GEOLOGY
INFORMATION
MACERALS
MATTER
MATURATION
MINERALOGY
MINERALS
MOUNTAINS
NORTH AMERICA
NUMERICAL DATA
OIL SAND DEPOSITS
OKLAHOMA
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROGRAPHY
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REFLECTIVITY
SEPARATION PROCESSES
SURFACE PROPERTIES
TAR
USA
VITRINITE
VOLATILE MATTER
040200* -- Oil Shales & Tar Sands-- Reserves
Geology
& Exploration
040500 -- Oil Shales & Tar Sands-- Properties & Composition
BIOLOGICAL MARKERS
BITUMENS
CHEMICAL ANALYSIS
CHEMISTRY
CHROMATOGRAPHY
DATA
DEVELOPED COUNTRIES
EXPERIMENTAL DATA
GEOCHEMISTRY
GEOLOGIC DEPOSITS
GEOLOGY
INFORMATION
MACERALS
MATTER
MATURATION
MINERALOGY
MINERALS
MOUNTAINS
NORTH AMERICA
NUMERICAL DATA
OIL SAND DEPOSITS
OKLAHOMA
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROGRAPHY
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REFLECTIVITY
SEPARATION PROCESSES
SURFACE PROPERTIES
TAR
USA
VITRINITE
VOLATILE MATTER