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GEOREF RECORD

Proposed type sections for Upper Silurian and Lower Devonian subsurface units in Permian Basin, West Texas

J. M. Hills and M. A. Hoenig
Proposed type sections for Upper Silurian and Lower Devonian subsurface units in Permian Basin, West Texas
AAPG Bulletin (September 1979) 63 (9): 1510-1521

Abstract

The name Wristen Formation is proposed for the formation in the Permian basin known as the "Silurian shale," "Upper Silurian," or "Green Silurian" with a type section in Ward County, Texas. Two members are designated in the Wristen Formation-the Wink and Frame Members. The lower, Wink Member, consists principally of gray limestone, and the upper, Frame Member, consists principally of greenish-gray shale and limestone. These members grade into a thick carbonate facies in Andrews County, Texas. The Wristen Formation is assumed to be of late Middle and Late Silurian age, and correlative with part of both the Hunton Group of Oklahoma and perhaps the Caballos Novaculite of the Marathon region. The name Thirtyone Formation is proposed for the unit known as the "Lower Devonian cherty limestone" in the subsurface of the Permian basin. The type section is in Crane County, Texas. The three lithofacies of the Thirtyone are: (1) a chert facies in the southwest; (2) a carbonate facies in the north; and (3) a siliceous limestone facies in the center of the study area. The Thirtyone is of Early and Middle Devonian age, and is also correlative with part of both the Hunton Group of Oklahoma and the Caballos Novaculite of the Marathon region.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AAPGBS
Serial Title: AAPG Bulletin
Serial Volume: 63
Serial Issue: 9
Title: Proposed type sections for Upper Silurian and Lower Devonian subsurface units in Permian Basin, West Texas
Affiliation: Univ. Tex. at El Paso, El Paso, Tex., United States
Pages: 1510-1521
Published: 197909
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
References: 12
Accession Number: 1980-015425
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: charts, sects., sketch maps
N31°00'00" - N33°00'00", W103°30'00" - W102°00'00"
Secondary Affiliation: Hunt Energy Corp., USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1980
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