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GEOREF RECORD

Subsurface geology and paleodepositional environments of Pleistocene trend; South High Island and South Galveston area; a regional evaluation

Pulak K. Ray, Donald R. Newsom, Gregory Klocek and Taylor Blood
Subsurface geology and paleodepositional environments of Pleistocene trend; South High Island and South Galveston area; a regional evaluation (in AAPG annual convention with divisions SEPM/EMD/DPA, Anonymous)
AAPG Bulletin (February 1985) 69 (2): 299

Abstract

The Pliocene-Pleistocene producing trend of South Galveston and South High Island areas represents a matured province with excellent data control. Four biostratigraphic working units (upper Pleistocene-Trimosina A, middle Pleistocene-Angulogerina B, lower Pleistocene-Lenticulina I, and upper Pliocene-Valvularia H) were regionally established and interpreted using all nonconfidential electric well logs. These correlations were verified with seismic data. Geophysical verification was possible in the upper and middle Pleistocene, but limited to local areas in the lower Pleistocene. Three major growth-fault systems, which become larger southward and attain as much as 4,000-5,000 ft of growth, were recognized. Salt piercement structures are sparse north of Federal Block HI-495 but increase in number southward. Paleoecological data and lithological information obtained from SP logs indicate that sedimentary sequences steadily prograded south from the Pliocene through Pleistocene, reaching the most southward position during the time of Trimosina A. Deposition of Pliocene-Pleistocene sand sequences occurred primarily in low-energy deltaic and associated environments. Occasional intraslope basinal and deep-water submarine fan type sand bodies were also recognized. The morphology and occurrence of deltas were significantly influenced by paleotopography and salt tectonics.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 69
Serial Issue: 2
Title: Subsurface geology and paleodepositional environments of Pleistocene trend; South High Island and South Galveston area; a regional evaluation
Title: AAPG annual convention with divisions SEPM/EMD/DPA
Affiliation: Miner. Manage. Serv., Metairie, LA, United States
Pages: 299
Published: 198502
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: New Orleans, LA, USA, United States
Meeting date: 19850324Mar. 24-27, 1985
Summary: Y
Accession Number: 1986-038858
Categories: Quaternary geology
Document Type: Serial Conference document
Bibliographic Level: Analytic
N29°04'60" - N29°22'00", W95°07'60" - W94°46'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1986
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