New Developments in the Appalachian-Caledonian-Variscan Orogen
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New analytical and field techniques, as well as increased international communication and collaboration, have resulted in significant new geological discoveries within the Appalachian-Caledonian-Variscan orogen. Cross-Atlantic correlations are more tightly constrained and the database that helps us understand the origins of Gondwanan terranes continues to grow. Special Paper 554 provides a comprehensive overview of our current understanding of the evolution of this orogen. It takes the reader along a clockwise path around the North Atlantic Ocean from the U.S. and Canadian Appalachians, to the Caledonides of Spitsbergen, Scandinavia, Scotland and Ireland, and thence south to the Variscides of Morocco.
Paleozoic orogenies and relative plate motions at the sutures of the Iapetus-Rheic Ocean
*Corresponding author e-mail: kroner@tu-freiberg.de
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Published:May 19, 2022
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CiteCitation
Uwe Kroner*, Tobias Stephan, Rolf L. Romer, 2022. "Paleozoic orogenies and relative plate motions at the sutures of the Iapetus-Rheic Ocean", New Developments in the Appalachian-Caledonian-Variscan Orogen, Yvette D. Kuiper, J. Brendan Murphy, R. Damian Nance, Robin A. Strachan, Margaret D. Thompson
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ABSTRACT
Early Ordovician to late Permian orogenies at different plate-boundary zones of western Pangea affected continental crust derived from the plates of North America (Laurentia), Europe (East European Craton including Baltica plus Arctida), and Gondwana. The diachronic orogenic processes comprised stages of intraoceanic subduction, formation and accretion of island arcs, and collision of several continents. Using established plate-tectonic models proposed for different regions and time spans, we provide for the first time a generic model that explains the tectonics of the entire Gondwana-Laurussia plate-boundary zone in a consistent way. We combined the plate kinematic model of the Pannotia-Pangea supercontinent cycle...
- Acadian
- accretion
- active margins
- Africa
- Appalachians
- Arctic region
- Atlantic Ocean
- Avalonia
- Cadomian Orogeny
- Cambrian
- Carboniferous
- continental crust
- crust
- Devonian
- Europe
- Gondwana
- Grampian Highlands
- Great Britain
- Greenland
- Iapetus
- Laurentia
- Laurussia
- Lower Ordovician
- Mauritanides
- North America
- North Atlantic
- oceanic crust
- Ordovician
- orogeny
- Ouachita Orogeny
- paleogeography
- paleomagnetism
- Paleozoic
- Pangaea
- passive margins
- Permian
- plate boundaries
- plate collision
- plate tectonics
- pole positions
- reconstruction
- Rheic Ocean
- Russian Platform
- Scotland
- Scottish Highlands
- sea-floor spreading
- Silurian
- slabs
- subduction
- supercontinents
- suture zones
- Taconic Orogeny
- terranes
- Tethys
- United Kingdom
- Variscan Orogeny
- West Africa
- Western Europe
- Marathon Belt
- Famatinian Orogeny
- Pannotia