Provenance of Norphlet sandstone, northern Gulf Coast
Conference
·
· AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)
OSTI ID:5697609
The Upper Jurassic Norphlet sandstone of the northern Gulf Coast is predominantly subarkose, with some arkose in the eastern area and sublitharenite and quartzarenite in the western area. Despite great depths of burial and despite feldspar and rock-fragment constituents, diagenesis has not appreciably altered the composition of Norphlet sandstone. Therefore, reconstruction of original composition of Norphlet sandstone presented little difficulty. Variation in detrital modes of the Norphlet suggests compositionally distinct source terranes. Samples from Florida, Alabama, and Mississippi reflect the influence of metamorphic and plutonic rocks of the Appalachian Piedmont Province and of Triassic-Jurassic volcanic rocks. Sandstones in east Texas, northern Louisiana, and southern Arkansas were derived from sedimentary and metasedimentary rocks of the Ouachita system. The Arbuckle Mountains and Llano uplift may have supplied trace amounts of quartzo-feldspathic and volcanic-rock fragments to the extreme western part of the study area. Norphlet sandstones represent a mixture of collision-orogen-derived sediment from the Appalachian and/or Ouachita system and continental-block-derived sediment from paleohighs and uplifts within the Gulf basin. However, Norphlet sandstones plot in the craton-interior and transitional-continental fields on Q-F-L and QM-F-Lt tectonic-provenance diagrams, because of mineralogically mature source rocks, elimination of unstable grains by abrasion and sorting during deposition, and/or sediment mixing from different source terranes.
- Research Organization:
- Univ. of New Orleans, LA
- OSTI ID:
- 5697609
- Report Number(s):
- CONF-8710198-
- Conference Information:
- Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States) Journal Volume: 71:9
- Country of Publication:
- United States
- Language:
- English
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Conference
·
Fri May 01 00:00:00 EDT 1987
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·
OSTI ID:5769584
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Conference
·
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· Am. Assoc. Pet. Geol., Bull.; (United States)
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Deep-water facies and petrography of the Galoc clastic unit, offshore Palawan, Philippines (south China Sea)
Conference
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·
OSTI ID:5954009
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02 PETROLEUM
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DEPOSITION
FEDERAL REGION IV
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GEOLOGIC AGES
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USA
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
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ALABAMA
DEPOSITION
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GEOLOGIC AGES
GEOLOGIC DEPOSITS
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JURASSIC PERIOD
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USA