Linkages and Feedbacks in Orogenic Systems

Geologic and kinematic insights from far-traveled horses in the Brevard fault zone, southern Appalachians
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Published:September 11, 2017
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CiteCitation
Robert D. Hatcher, Jr., Matthew T. Huebner, Justin R. Rehrer, Louis L. Acker, Paul D. Fullagar, Angang Liu, Patricia Lee Goad, 2017. "Geologic and kinematic insights from far-traveled horses in the Brevard fault zone, southern Appalachians", Linkages and Feedbacks in Orogenic Systems, Richard D. Law, J. Ryan Thigpen, Arthur J. Merschat, Harold H. Stowell
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ABSTRACT
The Brevard fault zone is one of the largest faults in the Appalachians, extending from Alabama to Virginia. It had a very complex history of movement and reactivation, with three movement episodes: (1) Acadian-Neoacadian (403–345 Ma) movement accompanying the thermal peak of metamorphism and deformation with dextral, southwest-directed emplacement of the Inner Piedmont; (2) ductile dextral reactivation during the early Alleghanian (~280 Ma) under lower-greenschist-facies conditions; and (3) brittle dip-slip reactivation during the late Alleghanian (260 Ma?). The Brevard is comparable to other large faults with polyphase movement in other orogens worldwide, for example, the Periadriatic line in the...
- absolute age
- Acadian Phase
- alkaline earth metals
- Alleghany Orogeny
- Appalachians
- Avalon Zone
- Blue Ridge Mountains
- Brevard Zone
- carbonate rocks
- Carolina Terrane
- deformation
- fault zones
- faults
- foliation
- geochemistry
- granites
- igneous rocks
- Inner Piedmont
- isotope ratios
- isotopes
- kinematics
- metals
- metamorphic rocks
- metamorphism
- metasedimentary rocks
- mylonites
- nesosilicates
- North America
- orogenic belts
- orogeny
- orthosilicates
- Paleozoic
- Piedmont
- plutonic rocks
- polyphase processes
- provenance
- reactivation
- sedimentary rocks
- silicates
- Southern Appalachians
- Sr-87/Sr-86
- stable isotopes
- strontium
- tectonics
- U/Pb
- United States
- zircon
- zircon group
- Chauga Belt
- Poor Mountain Formation
- Neoacadian Phase