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Organic petrography and organic geochemistry of Texas tertiary coals in relation to depositional environment and hydrocarbon generation

Book ·
OSTI ID:5294758

This book reports on petrographic and geochemical analyses of Texas lignites. Comprehensive organic petrological, organic geochemical, and chemical analyses were conducted on 156 samples of Tertiary coals from the Wilcox, Claiborne, and Jackson Groups in northeast, east-central, east, and South Texas. Samples were collected from outcrop, near-surface mines, and boreholes and classified into three maceral types (humic, mixed, and sapropelic) on the basis of hydrocarbon potential and maceral composition. Maceral types are abundantly illustrated in the report by both black-and white and color photomicrographs. The author used ternary diagrams of maceral-composition relations between ratios of macerals of similar affinity, selected palynological data, and physicochemical properties to distinguish specific peat-forming paleoenvironments within the Tertiary strata. These data establish the variability of depositional environments, depositional relations between maceral groups, and chemical properties of the Texas coals. Procedures used to evaluate hydrocarbon chemistry include Rock-Eval pyrolysis, gas chromatography, and hydrous and anhydrous pyrolysis.

OSTI ID:
5294758
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
011000* -- Coal
Lignite
& Peat-- Reserves
Geology
& Exploration
012020 -- Coal
Lignite
& Peat-- Surface Mining-- (1987-)
29 ENERGY PLANNING, POLICY, AND ECONOMY
294002 -- Energy Planning & Policy-- Petroleum
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHROMATOGRAPHY
CLASSIFICATION
COAL
COAL DEPOSITS
COAL MINES
COAL SEAMS
DEVELOPED COUNTRIES
ENERGY SOURCES
FEDERAL REGION VI
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GEOCHEMICAL SURVEYS
GEOLOGIC DEPOSITS
HYDROCARBONS
LIGNITE
MACERALS
MATERIALS
MATTER
MINERAL RESOURCES
MINES
MINING
NORTH AMERICA
ORGANIC COMPOUNDS
ORGANIC MATTER
PEAT
PETROGRAPHY
RESOURCE POTENTIAL
RESOURCES
SEPARATION PROCESSES
SURFACE MINING
SURVEYS
TEXAS
UNDERGROUND FACILITIES
USA