Results 1 to 10 of about 678 (159)
Rare eclogite‐mafic granulite in felsic granulite in Blanský les: precursor of intermediate granulite in the Bohemian Massif? [PDF]
Journal of Metamorphic Geology, 2014 AbstractMafic granulite, generated from eclogite, occurs in felsic granulite at Kleť, Blanský les, in the Bohemian Massif. This is significant because such eclogite is very rare within the felsic granulite massifs. Moreover, at this locality, strong interaction has occurred between the mafic granulite and the adjacent felsic granulite producing ...
P Štípská, R Powell, Martin Racek
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Structural and metamorphic evolution of the Turku migmatite complex, southwestern Finland [PDF]
Bulletin of the Geological Society of Finland, 1999 The Turku migmatite complex in southwestern Finland is a representative area for the type of tectonic and metamorphic evolution seen within the Palaeoproterozoic Svecofennian Orogen in southern Finland.
M. Väisänen, P. Hölttä
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BSGF - Earth Sciences Bulletin, 2021 Large uncertainties remain about the architecture, timing and role of the structures responsible for high degrees of crustal thinning and the exhumation of mid-crustal granulites in the Pyrenean and Biscay rift systems.
Cadenas Patricia +3 more
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Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton
Geochemistry, Geophysics, Geosystems, 2022 The occurrence of plate tectonic processes on Earth during the Paleoproterozoic is supported by ca. 2.2–1.8 Ga subduction‐collision orogens associated with the assembly of the Columbia‐Nuna supercontinent. Subsequent supercontinent breakup is evidence by
Chen Wu +5 more
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Frontiers in Earth Science, 2022 The identification of intraplate orogens seemingly poses challenges to the plate tectonic theory. Delineating the formation processes of intraplate orogens can provide clues for the better understandings of the above issue.
Lei Zhao, Mingguo Zhai, Xiwen Zhou
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Lithosphere, 2022 Shear zones are important channels for the exhumation of lower crustal rocks. The Ambaji granulite of the Aravalli-Delhi mobile belt (ADMB) has been exhumed along several shear zones, and earlier studies have shown a two-stage exhumation process during a
Sudheer Kumar Tiwari +7 more
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Geology and mineralogy of gemming terrains of Sri Lanka [PDF]
Bulletin of the Geological Society of Finland, 1985 Gemming in Sri Lanka is carried out in river valleys and on hill slopes underlain by high grade Precambrian metasedimentary rock suites. The principal gem mineral, corundum, is mined from assemblages rich in garnet, spinel, topaz, tourmaline and zircon ...
K. Dahanayake, A.P. Ranasinghe
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Frontiers in Earth Science, 2022 The East Hebei terrane from the North China Craton preserves the dome–and–keel structures, which was transected by a later linear belt in the north margin.
Ting Liu +4 more
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Research progress of the ultrahigh-temperature granulites in the Rauer Group, East Antarctica
Dizhi lixue xuebao, 2021 The Rauer Group (Rauer Islands), located in the eastern margin of the Prydz Tectonic Belt in East Antarctica, represents a composite high-grade metamorphic terrane consisting of Archaean and Mesoproterozoic rocks.
TONG Laixi, LIU Zhao, WANG Yanbin
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Mafic Granulites in the Crystalline Core of the Neybaz Complex [PDF]
پترولوژیIntroductionFormation and evolution of the continental crust is one of the fundamental subjects in Earth sciences studies, as these processes usually occurred during the Archean and Proterozoic (e.g., Condie, 1980; Taylor and McLennan, 1981).
Rasoul Valiei +2 more
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