40Ar/39Ar constraints on chronology of Augusta Fault Zone movement and late Alleghanian extension, southern Appalachian Piedmont, South Carolina and Georgia

H. D. Maher; R. D. Dallmeyer; D. T. Secor; P. E. Sacks

doi:10.2475/ajs.294.4.428

⁴⁰Ar/³⁹Ar constraints on chronology of Augusta Fault Zone movement and late Alleghanian extension, southern Appalachian Piedmont, South Carolina and Georgia

H. D. Maher, R. D. Dallmeyer, D. T. Secor, P. E. Sacks

Geology

Research output: Contribution to journal › Article

21 Citations (Scopus)

Abstract

Geologic relations and the ⁴⁰Ar/³⁹Ar cooling ages suggest that the Augusta fault juxtaposed Augusta terrane rocks from upper crustal levels against Savannah River terrane rocks from lower crustal levels at and after about 274 Ma. Late Alleghanian extension along the Augusta fault zone is consistent with gravitational collapse of an orogenic topographic front which developed during crustal shortening in early stages of the Alleghanian orogeny. The role of Alleghanian extension in the Piedmont tectonothermal history could be significant. -from Authors

Original language	English (US)
Pages (from-to)	428-448
Number of pages	21
Journal	American Journal of Science
Volume	294
Issue number	4
DOIs	https://doi.org/10.2475/ajs.294.4.428
State	Published - Jan 1 1994

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Alleghanian

piedmont

chronology

fault zone

terrane

Alleghanian orogeny

crustal shortening

rock

cooling

history

river

ASJC Scopus subject areas

Earth and Planetary Sciences(all)

Cite this

Maher, H. D., Dallmeyer, R. D., Secor, D. T., & Sacks, P. E. (1994). ⁴⁰Ar/³⁹Ar constraints on chronology of Augusta Fault Zone movement and late Alleghanian extension, southern Appalachian Piedmont, South Carolina and Georgia. American Journal of Science, 294(4), 428-448. https://doi.org/10.2475/ajs.294.4.428

⁴⁰Ar/³⁹Ar constraints on chronology of Augusta Fault Zone movement and late Alleghanian extension, southern Appalachian Piedmont, South Carolina and Georgia. / Maher, H. D.; Dallmeyer, R. D.; Secor, D. T.; Sacks, P. E.

In: American Journal of Science, Vol. 294, No. 4, 01.01.1994, p. 428-448.

Research output: Contribution to journal › Article

Maher, HD, Dallmeyer, RD, Secor, DT & Sacks, PE 1994, '⁴⁰Ar/³⁹Ar constraints on chronology of Augusta Fault Zone movement and late Alleghanian extension, southern Appalachian Piedmont, South Carolina and Georgia', American Journal of Science, vol. 294, no. 4, pp. 428-448. https://doi.org/10.2475/ajs.294.4.428

Maher HD, Dallmeyer RD, Secor DT, Sacks PE. ⁴⁰Ar/³⁹Ar constraints on chronology of Augusta Fault Zone movement and late Alleghanian extension, southern Appalachian Piedmont, South Carolina and Georgia. American Journal of Science. 1994 Jan 1;294(4):428-448. https://doi.org/10.2475/ajs.294.4.428

Maher, H. D. ; Dallmeyer, R. D. ; Secor, D. T. ; Sacks, P. E. / ⁴⁰Ar/³⁹Ar constraints on chronology of Augusta Fault Zone movement and late Alleghanian extension, southern Appalachian Piedmont, South Carolina and Georgia. In: American Journal of Science. 1994 ; Vol. 294, No. 4. pp. 428-448.

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