Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Pennsylvanian-Early Permian chronostratigraphic evolution of the eastern shelf of the Midland Basin; implications for subsidence patterns across the Ancestral Rocky Mountains

Jill Garcia, D. E. Sweet and J. E. Barrick
Pennsylvanian-Early Permian chronostratigraphic evolution of the eastern shelf of the Midland Basin; implications for subsidence patterns across the Ancestral Rocky Mountains (in Late Paleozoic and early Mesozoic tectonostratigraphy and biostratigraphy of western Pangea, Charles M. Henderson (editor), Walter S. Snyder (editor) and Scott M. Ritter (editor))
Special Publication - Society for Sedimentary Geology (August 2022) 113: 255-269

Abstract

This article utilizes over 3000 biostratigraphic reports of fusulinid taxa in the Midland Basin to produce a series of chronostratigraphic surfaces that show shelf-to-basin profiles from the end of the Atokan to the end of the Leonardian. The position of the shelf-edge break along the Eastern Shelf was geometrically reconstructed for each of the chronostratigraphic surfaces. Comparing the location of the shelf edges produced in this study to published examples resulted in significant disagreement for some time intervals, especially the Wolfcampian. These discrepancies are inferred to be predominantly the result of lithostratigraphic-based vs. biostratigraphic-based data. Assessing shelf-edge trajectory through the Pennsylvanian into the Early Permian indicates that (1) tectonic and eustatic increases in shelf accommodation resulted in retrogradation of the shelf edge during the Pennsylvanian, and (2) Early Permian progradation was the likely result of cessation in tectonic subsidence that allowed bypass of the shelf and passive filling of the basin center. When placed into the context of the Ancestral Rocky Mountains, subsidence analysis of the Midland Basin agrees with tectonic models that portray a synchronous start rather than an east-to-west migration of peak subsidence. Additionally, a relatively synchronous apex of tectonic subsidence occurred in the Middle to Late Pennsylvanian.


ISSN: 1060-071X
EISSN: 2159-5755
Serial Title: Special Publication - Society for Sedimentary Geology
Serial Volume: 113
Title: Pennsylvanian-Early Permian chronostratigraphic evolution of the eastern shelf of the Midland Basin; implications for subsidence patterns across the Ancestral Rocky Mountains
Title: Late Paleozoic and early Mesozoic tectonostratigraphy and biostratigraphy of western Pangea
Author(s): Garcia, JillSweet, D. E.Barrick, J. E.
Author(s): Henderson, Charles M.editor
Author(s): Snyder, Walter S.editor
Author(s): Ritter, Scott M.editor
Affiliation: Texas Tech University, Department of Geosciences, Lubbock, TX, United States
Affiliation: University of Calgary, Department of Geoscience, Calgary, AB, Canada
Pages: 255-269
Published: 202208
Text Language: English
Publisher: Society for Sedimentary Geology (SEPM), Tulsa, OK, United States
ISBN: 9781565763661
ISBN: 9781565763678
References: 66
Accession Number: 2023-069957
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sect., 2 tables, geol. sketch maps
N32°00'00" - N34°00'00", W102°00'00" - W100°00'00"
N30°00'00" - N32°00'00", W102°00'00" - W100°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2023, American Geosciences Institute.
Update Code: 2023
Close Modal

or Create an Account

Close Modal
Close Modal