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GEOREF RECORD

Textures formed during shallow water halite deposition; an example from Permian of Palo Duro Basin, Texas

Susan D. Hovorka
Textures formed during shallow water halite deposition; an example from Permian of Palo Duro Basin, Texas (in 1984 AAPG annual convention with divisions; SEPM/EMD/DPA, Anonymous)
AAPG Bulletin (April 1984) 68 (4): 487-488

Abstract

The Palo Duro basin, part of the broad northern shelf of the Midland basin during the Late Permian, accumulated cyclic, regressive, carbonate-anhydrite-halite sequences. Detailed interpretation of more than 2,000 m (6,500 ft) of halite core from 9 wells drilled by the United States Department of Energy in the northern Palo Duro basin permitted recognition of textures formed during halite deposition. Textures formed on the bottom of a halite-saturated water body include color banding due to variation in composition and amount of impurities in halite beds, and vertically elongated anhedral halite mosaic, formed due to competition for space on the pool floor. Abundant fluid inclusions trapped along halite growth faces reflect rapid precipitation of halite in shallow water. Darker halite with sparse inclusions may have formed less rapidly in slightly deeper water. Anhydrite partings, truncating the bottom-deposited fabrics, represent influx of marine-derived brine concentrated during transport across the broad, shallow shelf. The brine corroded existing halite and deposited gypsum before evaporation increased salinity and reinitiated halite deposition. Halite precipitation ceased when brine supply decreased and the flat became emergent. Mudstone was transported onto the flat by wind and sheetwash. Exposure of the halite to meteoric water during this phase caused development of halite karst and destruction of other fabrics by recrystallization.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 68
Serial Issue: 4
Title: Textures formed during shallow water halite deposition; an example from Permian of Palo Duro Basin, Texas
Title: 1984 AAPG annual convention with divisions; SEPM/EMD/DPA
Author(s): Hovorka, Susan D.
Author(s): Anonymous
Affiliation: Bur. Econ. Geol., Austin, TX, United States
Pages: 487-488
Published: 198404
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
Meeting name: AAPG annual convention with divisions; SEPM/EMD/DPA
Meeting location: San Antonio, TX, USA, United States
Meeting date: 19840520May 20-23, 1984
Summary: Y
Accession Number: 1985-051173
Categories: Sedimentary petrology
Document Type: Serial Conference document
Bibliographic Level: Analytic
N33°55'00" - N35°19'60", W103°04'60" - W100°04'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1985
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