Modeling the exhumation path of partially melted ultrahigh-pressure metapelites, North-East Greenland Caledonides
نویسندگان
چکیده
منابع مشابه
Exhumation of high-pressure metapelites and coeval crustal extension in the Alpujarride complex (Betic Cordillera)
The current configuration of the Alpujarride complex (Befic Orogen) comprises a stack of thinned tectonic units, made up mainly of continental crest. P T path modelling in different levels of an Alpujarride unit (the Salobrefia tectonic unit) reveals a high-pressure metamorphic stage followed by subsequent decompression at nearly isothermal conditions. Nevertheless, the P T conditions differ fr...
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15 صفحه اولWhat brought them up? Exhumation of the Dabie Shan ultrahigh-pressure rocks
Metamorphic coesite and diamond in the Dabie Shan, eastern China, testify to subduction of continental crust to >100 km depth. Exhumation of these ultrahigh-pressure rocks through the crust encompassed two stages. (1) South-dipping foliation, southeastplunging stretching lineation, lineation-parallel isoclinal folds, and boudins indicate extreme subhorizontal shortening and subvertical extensio...
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A new dataset for the high-pressure to ultrahigh-pressure Western Gneiss Region allows the definition of distinct structural and petrological domains.Much of the study area is an E-dippinghomoclinewith E-plunging lineations that exposes progressively deeper, more strongly deformed, more eclogite-rich structural levels westward. Although eclogites crop out across the WGR, Scandian deformation is...
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Thermobarometry suggests that ultrahigh-pressure (UHP) to high-pressure (HP) rocks across the Western Gneiss Region ponded at the Moho following as much as 100 km of exhumation through the mantle and before exhumation to the upper crust. Eclogite across the c. 22 000 km study area records minimum pressures of c. 8–18 kbar and temperatures of c. 650–780 C. One orthopyroxene eclogite yields an UH...
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ژورنال
عنوان ژورنال: Lithos
سال: 2015
ISSN: 0024-4937
DOI: 10.1016/j.lithos.2014.10.010