Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Thick-skinned, thin-skinned, and balanced sections of Southern Appalachians

Nicholas B. Woodward, Peter T. Regan and Charles T. Lutz
Thick-skinned, thin-skinned, and balanced sections of Southern Appalachians (in AAPG Eastern Section meeting; abstracts, Anonymous)
AAPG Bulletin (September 1985) 69 (9): 1452

Abstract

The conflict between thick-skinned and thin-skinned thrust belt hypotheses in the southern Appalachians has been conclusively decided in favor of the thin-skinned interpretation by seismic surveys and drilling results. Balanced cross sections are a logical development stemming from the thin-skinned thrusting hypothesis. Three detailed balanced sections across the region (northern Alabama, Knoxville area, and Blacksburg area) are compared with the early thin-skinned and thick-skinned models of Rodgers, Cooper, and Chamberlin. In Virginia, Cooper's hypothesis about the order of thrusting and synchronous evolution of structures associated with basement fault motion have been disproved by modern mapping, fabric, and paleontologic work. In northeast Tennessee, the no-basement hypothesis has been relatively well established since the work of Rich. In the Alabama-Georgia segment, discussion continues about the origin of some major structures. Balanced section concepts require that the sections be restored to their pre-deformational configurations. In retrospect, the geologic reasoning based on surface stratigraphic thicknesses and structural styles should have convinced us of the thin-skinned nature of thrusts without the seismic data that seemed essential at the time. The COCORP seismic results should have been no surprise had the geologic reasoning of balanced sections been believed.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 69
Serial Issue: 9
Title: Thick-skinned, thin-skinned, and balanced sections of Southern Appalachians
Title: AAPG Eastern Section meeting; abstracts
Affiliation: Univ. Tenn., Knoxville, TN, United States
Pages: 1452
Published: 198509
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
Meeting name: AAPG Eastern Section Meeting
Meeting location: Williamsburg, VA, USA, United States
Meeting date: 19851110Nov. 10-12, 1985
Summary: Y
Accession Number: 1986-040734
Categories: Structural geology
Document Type: Serial Conference document
Bibliographic Level: Analytic
N30°00'00" - N35°00'00", W88°30'00" - W85°00'00"
N30°19'60" - N35°00'00", W85°34'60" - W80°45'00"
N35°00'00" - N36°45'00", W90°15'00" - W81°40'00"
N36°34'60" - N39°28'00", W83°34'60" - W75°15'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1986
Close Modal

or Create an Account

Close Modal
Close Modal