The Western Carpathians and Ouachitas: A Comparative Study of Geodynamic Evolution
Jan Golonka, Andrzej Ślączka, Frank J. Picha, 2006. "The Western Carpathians and Ouachitas: A Comparative Study of Geodynamic Evolution", The Carpathians and Their Foreland: Geology and Hydrocarbon Resources, Jan Golonka, Frank J. Picha
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Twelve time-interval maps have been presented that depict the plate-tectonic configuration, paleogeography, and lithofacies for the circum-Carpathian area from the Late Carboniferous through Neogene and for the circum-Ouachita region from the Late Cambrian through Early Permian.
The following geodynamic evolution stages can be distinguished in these two orogens:-stage I: rifting of terranes off the major continent, forming oceanic basins, Triassic–Early Cretaceous in the Carpathian region, Cambrian–Devonian in the Ouachita basin; stage II: formation of subduction zones along the active margin, partial closing of the oceanic basin, development of flysch basin associated with this rifting on the platform (passive margin) with the attenuated crust, Late Cretaceous–Paleocene in the Carpathian region, Early Carboniferous in the Ouachitas; stage III: collision, perhaps terrane-continent, with the accompanying convergence of two large continents, development of accretionary prisms, the Eocene–early Miocene in the Carpathian region, Late Carboniferous in the Ouachitas; stage IV: postcollisional, Miocene–present–future(?) in the Carpathians, Permian–Triassic in the Ouachitas. Both Carpathians and Ouachitas are an accretionary prism formed in response to terrane-continent and continent-continent collision. The paleogeographic approach we have taken shows how these mountain belts were constructed through the orogenic cycle, which reflects complex plate-tectonic processes. The Carpathians and Ouachitas record complete and homologous Wilson cycles.
Copyright ©2006. The American Association of Petroleum Geologists.
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This volume of 30 chapters authored by 107 geologists and geophysicists from Austria, Czech Republic, Hungary, Poland, Romania, Slovakia, Ukraine, United Kingdom, and the USA provides a comprehensive and understandable account of geology and hydrocarbon resources of the entire Carpathian system from northeastern Austria to southern Romania, including the Neogene foredeep, the foreland platform both in front and beneath the thrust belt, the Carpathian thrust belt, and the late and post orogenic intermontane basins. Principal chapters on regional geology are supplemented by thematic contributions on geodynamic reconstructions, regional geophysical investigations, hydrocarbon systems, and case studies of major oil and gas fields. To date, close to 7 billion barrels of oil and more than 53 trillion cubic feet of natural gas have been produced from the entire Carpathian system. Additional new reserves may be found, especially at deeper structural levels below the Neogene foredeep and the thin-skinned Carpathian thrust belt. Seventeen chapters of Memoir 84 have been printed in full. The remaining chapters have been printed as abstracts only, with the full paper for all 30 chapters as .pdf files on the CD-ROM in the back of this publication. The publication is intended as a source of information to schools, governmental and private institutions, oil companies, and potential investors.