Shoreline depositional environments of Glen Rose Formation (lower Cretaceous) in type area, Somervell and Hood Counties, Texas
Conference
·
· AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)
OSTI ID:6375638
The studied interval of the Glen Rose Formation (Aptian-Albian) comprises a clastic-to-carbonate sequence, which was deposited in a seaward-fining tidal flat-salt marsh complex. Eight distinct facies were identified, including the calcareous sandstone, calcareous shale, bivalve shale, oyster shale, transitional terrigenous-carbonate, dolomite, bioclastic packstone-grainstone, and shell-fragment wackestone facies. These facies were deposited in sand flats; small fluvial creeks; an ecologically complex, mud-dominated intertidal flat; and a subtidal, nearshore lagoon. Thin bioclastic packstone-grainstones and dolomites of the high energy intertidal and supratidal environments regularly interrupt the terrigenous clastic facies. Abundant nearshore features include salt-tolerant land plants, dinosaur tracks, desiccation cracks, and localized concentrations of evaporites. A warm semi-arid to arid climate is indicated. This sequence is interpreted as being comparable to the Holocene salt marshes on Sapelo Island, Georgia, based on similar lithofacies, sedimentary structures, and biological components.
- Research Organization:
- Univ. of Texas, Arlington (USA)
- OSTI ID:
- 6375638
- Report Number(s):
- CONF-8810362-
- Conference Information:
- Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States) Journal Volume: 72:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
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CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
DEPOSITION
DOLOMITE
FEDERAL REGION VI
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC HISTORY
LIMESTONE
MAGNESIUM CARBONATES
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MINERAL RESOURCES
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OXYGEN COMPOUNDS
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SANDSTONES
SEDIMENTARY ROCKS
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USA
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
DEPOSITION
DOLOMITE
FEDERAL REGION VI
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC HISTORY
LIMESTONE
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MAGNESIUM COMPOUNDS
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ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SHALES
TEXAS
USA