Matches in SemOpenAlex for { <https://semopenalex.org/work/W2051402121> ?p ?o ?g. }
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- W2051402121 abstract "Abstract Ultrahigh-pressure (UHP) metamorphism refers to mineralogical modifications of continental and oceanic crustal protoliths ± associated mafic-ultramafic rocks initially formed or emplaced in shallow levels of the lithosphere, but which subsequently have experienced P–T conditions within or above the coesite stability field (>∼2.7 GPa, ∼700 °C). Typical products include eclogite, garnet peridotite, and UHP varieties of metapelite, quartzite, marble, paragneiss, and orthogneiss. UHP metamorphic assemblages require relatively cold lithospheric subduction to mantle depths; some recrystallization even occurs under “forbidden” P–T conditions, characterized by a geotherm of The current explosion of research on continental UHP terranes reflects their significance for mantle dynamics and the tectonics of continental subduction, collision, exhumation, mantle–slab interactions, and geochemical recycling. A further characterization of UHP phases and positive identification of UHP minerals requires new experimental studies coupled with state-of-the-art analyses. For example, the very rare occurrence of microdiamond inclusions in zircons from Dabie–Sulu UHP rocks may reflect high f O 2 attending recrystallization inasmuch as epidote is rather common. Rutile needles within garnets from Sulu UHP eclogitic rocks may not be the result of exsolution, so in such cases the apparent UHP pressure may have been over estimated. Hadean igneous microdiamond inclusions in Jack Hills detrital zircons could have originated from mantle xenoliths whereas abundant detrital Phanerozoic diamonds containing inclusions of coesite and other eclogitic minerals from New South Wales might have been derived from unexposed UHP metamorphic terranes. Micro-mineral intergrowth and nano-size minerals may hold important key to deciphering the actual P–T paths of subduction and mantle return flow. Although most exhumed terranes have returned surfaceward relatively rapidly after short time of UHP condition, the long duration of storage at great depth and slow exhumation for the largest UHP terranes remain as major problems." @default.
- W2051402121 created "2016-06-24" @default.
- W2051402121 creator A5030662898 @default.
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- W2051402121 creator A5051271887 @default.
- W2051402121 creator A5071599901 @default.
- W2051402121 creator A5082519097 @default.
- W2051402121 date "2009-07-01" @default.
- W2051402121 modified "2023-10-18" @default.
- W2051402121 title "Ultrahigh-pressure minerals and metamorphic terranes – The view from China" @default.
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