Mechanisms to generate ultrahigh-temperature metamorphism

S Jiao, M Brown, RN Mitchell, P Chowdhury… - Nature Reviews Earth & …, 2023 - nature.com
Ultrahigh-temperature (UHT; T max≥ 900° C) metamorphism requires unusually high heat
in continental crust at depths of 15–55 km, but how such extreme thermal conditions are …

On ultrahigh-temperature crustal metamorphism

DE Kelsey - Gondwana Research, 2008 - Elsevier
Ultrahigh-temperature (UHT) metamorphism is the most thermally extreme type of crustal
metamorphism, with the crust capable of withstanding temperatures≥ 900° C. Mineral …

[HTML][HTML] On ultrahigh temperature crustal metamorphism: Phase equilibria, trace element thermometry, bulk composition, heat sources, timescales and tectonic …

DE Kelsey, M Hand - Geoscience Frontiers, 2015 - Elsevier
Ultrahigh temperature (UHT) metamorphism is the most thermally extreme form of regional
crustal metamorphism, with temperatures exceeding 900° C. UHT crustal metamorphism is …

Metamorphic conditions in orogenic belts: a record of secular change

M Brown - International Geology Review, 2007 - Taylor & Francis
In general, Archean rocks exhibit rather ordinary moderate-P-high-T facies series
metamorphism; neither blueschists nor any record of deep continental subduction and return …

UHT sapphirine granulite metamorphism at 1.93–1.92 Ga caused by gabbronorite intrusions: implications for tectonic evolution of the northern margin of the North …

JH Guo, P Peng, Y Chen, SJ Jiao, BF Windley - Precambrian Research, 2012 - Elsevier
Sapphirine granulites occur in the Daqingshan and **ing areas in the Palaeoproterozoic
Khondalite belt, which divides the Western Block of the North China Craton into the Yinshan …

Refining the P–T records of UHT crustal metamorphism

SL Harley - Journal of metamorphic Geology, 2008 - Wiley Online Library
Abstract Ultra‐high‐temperature (UHT) metamorphism occurs when the continental crust is
subjected to temperatures of greater than 900° C at depths of 20–40 km. UHT …

Modelling of mineral equilibria in ultrahigh‐temperature metamorphic rocks from the Anápolis–Itauçu Complex, central Brazil

JA Baldwin, R Powell, M Brown… - Journal of …, 2005 - Wiley Online Library
A new quantitative approach to constraining mineral equilibria in sapphirine‐bearing
ultrahigh‐temperature (UHT) granulites through the use of pseudosections and compatibility …

Extending our understanding of ultrahigh temperature crustal metamorphism

SL Harley - Journal of Mineralogical and Petrological Sciences, 2004 - jstage.jst.go.jp
Rapid developments in the scope and quality of internally consistent thermodynamic data
sets arising from the incorporation of new experimental data and solid| solution models for …

Deducing source rock lithology from detrital rutile geochemistry: an example from the Erzgebirge, Germany

S Triebold, H von Eynatten, GL Luvizotto, T Zack - Chemical geology, 2007 - Elsevier
This study evaluates the applicability of rutile trace element geochemistry to provenance
studies. The study area is the Erzgebirge in eastern Germany, where metamorphic rocks …

Calculated phase equilibria in K2O‐FeO‐MgO‐Al2O3‐SiO2‐H2O for sapphirine‐quartz‐bearing mineral assemblages

DE Kelsey, RW White, TJB Holland… - Journal of Metamorphic …, 2004 - Wiley Online Library
Sapphirine, coexisting with quartz, is an indicator mineral for ultrahigh‐temperature
metamorphism in aluminous rock compositions. Here a new activity‐composition model for …