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 | |
State | Published - Jan 1 1994 |
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ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
Cite this
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
}
TY - JOUR
T1 - 40Ar/39Ar constraints on chronology of Augusta Fault Zone movement and late Alleghanian extension, southern Appalachian Piedmont, South Carolina and Georgia
AU - Maher, H. D.
AU - Dallmeyer, R. D.
AU - Secor, D. T.
AU - Sacks, P. E.
PY - 1994/1/1
Y1 - 1994/1/1
N2 - 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
AB - 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
UR - http://www.scopus.com/inward/record.url?scp=0028591468&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028591468&partnerID=8YFLogxK
U2 - 10.2475/ajs.294.4.428
DO - 10.2475/ajs.294.4.428
M3 - Article
AN - SCOPUS:0028591468
VL - 294
SP - 428
EP - 448
JO - American Journal of Science
JF - American Journal of Science
SN - 0002-9599
IS - 4
ER -