Depositional environment of Tertiary coals from Texas as revealed by organic petrography and geochemical properties
Organic petrological (maceral composition and palynomorph assemblages) and geochemical properties of selected coals from the Wilcox (R/sub 0/ between 0.30 and 0.42%), Claiborne (R/sub 0/ = 0.49%), and Jackson (R/sub 0/ between 0.24 and 0.31%) Groups of Texas reveal characteristic features of these coals. Maceral composition ternary diagrams, relationships between ratios of macerals of similar affinity, palynological data, and geochemical properties establish the variability of specific peat-forming environments, depositional relations between maceral groups, and the geochemistry of the peat-forming plant communities. Wilcox coals are deposited in swamp, swamp-marsh, and marsh-dominated interdistributary (polynomorphs are Nyssa, Taxodium, Betulacea-Myricaceae, Calamuspollenites, Engelhardtia) or lacustrine (Botryococcus, Schizoporis, Pediastrum, etc) basins on an upper delta plain; Claiborne coals in a lacustrine (Botryococcus, Platycarya) basin on a delta plain; and Jackston coals in swamp-marsh complex (Nyssa) and marsh-dominated interdistributary (Arepites, Calamuspollenites, Liliacidites) areas on a lower delta plain or in a strand plain/barrier-bar/lagoonal environment.
- Research Organization:
- Geofuel Research Inc., Sydney, Nova Scotia (Canada)
- OSTI ID:
- 5882848
- Report Number(s):
- CONF-880301-
- Journal Information:
- AAPG Bull.; (United States), Journal Name: AAPG Bull.; (United States) Vol. 72:2; ISSN AABUD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
011000* -- Coal
Lignite
& Peat-- Reserves
Geology
& Exploration
CENOZOIC ERA
CHEMISTRY
COAL DEPOSITS
DEPOSITION
FEDERAL REGION VI
FOSSILS
GEOCHEMISTRY
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
MACERALS
MINERAL RESOURCES
NORTH AMERICA
RESOURCES
TERTIARY PERIOD
TEXAS
USA