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GEOREF RECORD

A reinvestigation of the paleobotanical evidence for the age of the Erin Shale

Robert A. Gastaldo and Robert B. Cook
A reinvestigation of the paleobotanical evidence for the age of the Erin Shale (in Tectonic studies in the Talladega and Carolina slate belts, southern Appalachian Orogen, Denny N. Bearce (editor), William W. Black (editor), Stephen A. Kish (editor) and James F. Tull (editor))
Special Paper - Geological Society of America (1982) 191: 69-77

Abstract

The age of the Erin Shale, Clay County, Alabama, has been variously interpreted based primarily upon the acceptance or rejection of the original Carboniferous age assignment. The failure to confirm the in-place occurrence of the reported Pennsylvanian megafossils, coupled with both regional and detailed mapping, has led to the recent placement of the Erin Shale in a stratigraphically equivalent position with the Lay Dam Formation of inferred Early Devonian age. An investigation of the previously illustrated Carboniferous fossils reportedly collected from the Erin Shale and suites of rock specimens collected during the present study has added new pieces to the Erin puzzle but has not resolved the age asignment problem. Petrographic and x-ray diffraction powder analyses of the adhering matrix on Lepidostrobus hobbsii D. White and phyllites collected from the Erin outcrop belt indicate that these rocks are similar if not indistinguishable. Identifiable coal fragments exist in the Erin as do poorly preserved, unassignable fossil plant fragments. Much additional work is needed to fully define the fossiliferous nature of the Erin.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 191
Title: A reinvestigation of the paleobotanical evidence for the age of the Erin Shale
Title: Tectonic studies in the Talladega and Carolina slate belts, southern Appalachian Orogen
Author(s): Gastaldo, Robert A.Cook, Robert B.
Author(s): Bearce, Denny N.editor
Author(s): Black, William W.editor
Author(s): Kish, Stephen A.editor
Author(s): Tull, James F.editor
Affiliation: Auburn Univ., Dep. Geol., Auburn, AL, United States
Pages: 69-77
Published: 1982
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-2191-1
Meeting name: Geology of the Talladega slate belt
Meeting location: Hattiesburg, MS, USA, United States
Meeting date: 19810319March 19, 1981
References: 25
Accession Number: 1983-048762
Categories: Stratigraphy
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus.
N33°04'60" - N33°28'60", W86°07'60" - W85°40'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1983
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