Results 141 to 150 of about 384 (188)
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Delamination in collisional orogens
2012Modes of mantle delamination in collision zones are discussed in the light of 2D numerical modeling. Freely evolving thermomechanical models take into account phase changes in the mantle and melting in the crust. Distinct modes are identified, in which orogens undergo mantle delamination concurrently or after collision.
Ueda, K. +2 more
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Global and Planetary Change, 2023
Sedimentary basins in collisional settings result from interactions within and between lithospheric plates and sublithospheric mantle. Imaging their structure brings fundamental constraints to both the extraction of hy-drocarbon or geothermal resources and seismic hazard analyses, especially in seismogenic areas affected by fluid percolation.
Borleanu F. +4 more
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Sedimentary basins in collisional settings result from interactions within and between lithospheric plates and sublithospheric mantle. Imaging their structure brings fundamental constraints to both the extraction of hy-drocarbon or geothermal resources and seismic hazard analyses, especially in seismogenic areas affected by fluid percolation.
Borleanu F. +4 more
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Torngat Orogen — a Palaeoproterozoic example of a narrow doubly vergent collisional orogen
Geological Society, London, Special Publications, 1996Abstract Three widely spaced transects across northern Torngat Orogen demonstrate the broadly synclinorial structure and axial location of the monocyclic, supracrustal Tasiuyak gneiss complex in the centre of a doubly vergent orogen, with east-verging thrusting onto the Nain craton and west- or southwest-verging thrusting onto ...
Toby Rivers +4 more
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Petrogenesis of leucogranites in collisional orogens
Geological Society, London, Special Publications, 2019Abstract Leucogranites are a characteristic feature of collisional orogens. Their generation is intimately related to crustal thickening and the active deformation and metamorphism of metapelites. Data from Proterozoic to present day orogenic belts show that collisional leucogranites (CLGs) are peraluminous, with muscovite ...
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Metallogenesis in the Tibetan collisional orogenic Belt
2005The Tibetan collision orogen, characterized by the occurrence of large-scale, intense, recent mineralization, various kinds of large-scale deposits and weak reworking on these deposits, is regarded to be a significant metallogenic domain for the understanding of ore-forming processes in collisional orogens.
Zengqian Hou +11 more
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P-T-t paths of collisional orogens
Geologische Rundschau, 1991Pressure-temperature-time (P-T-t) paths summarize the changes in pressure and temperature imposed on a metamorphic rock during orogenesis. They provide a convenient framework for the interpretation of complex metamorphic histories and also offer insight into the thermal and tectonic factors controlling metamorphism in collisional orogens.
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Collisional and postcollisional tectonics of the Apenninic-Maghrebian orogen (southern Italy)
2006Geological analysis of geophysical data obtained by the interpretation of crustal profiles indicates that in the central Mediterranean region the following structural domains can be distinguished: the foreland domains, an orogenic belt, and the Corsica- Sardinia block. The foreland domains are represented by two continental blocks, the Apulian block to
Lentini F +2 more
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9. Late Paleoproterozoic North Voronezh intracontinental collisional orogen
2015Mints, M.V., Philippova, I.B., Babayants, P.S., Blokh, Y.I., and Trusov, A.A., 2015, Late Paleoproterozoic North Voronezh intracontinental collisional orogen, in Mints, M.V., Dokukina, K.A., Konilov, A.N., Philippova, I.B., Zlobin, V.L., Babayants, P.S., Belousova, E.A., Blokh, Y.I., Bogina, M.M., Bush, W.A., Dokukin, P.A., Kaulina, T.V., Natapov, L.M.,
Michael V. Mints +4 more
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SYN- TO POST-OROGENIC EVOLUTION OF COLLISIONAL MOUNTAIN SYSTEMS
2022This dissertation is composed of three distinct manuscripts which collectively investigate processes that contribute to the late evolution of collisional mountain systems —specifically, the ancient Appalachian-Caledonian system. In the first paper, 40Ar/39Ar thermochronological data are used to constrain the timing of exhumation of the Scandian ...
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Chapter 11 Proterozoic Collisional and Accretionary Orogens
1992Publisher Summary During the Proterozoic, two types of orogenesis were in operation. One involved the collision of two or more continental blocks and gave rise, where collision was orthogonal, to orogens with thickened and commonly uplifted and eroded crust and to much reworking (by thrusting and partial melting) of older continental crust.
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