Results 91 to 100 of about 7,779 (214)

Evolution of the granulite-facies Hart-Jaune Terrane in the context of the Grenville of eastern Quebec : structural and metamorphic indicators of late-stage normal faulting

, 1995
The granulite-facies Hart-Jaune Terrane is the structurally lowermost tectonic assemblage in the Allochthonous Belt of the Grenville province exposed along the Manicouagan Reservoir transect in eastern Quebec.The Hart-Jaune Terrane is composed of ...
St-Jean, J. Alger
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Reactive Melt Flow in the Continental Arc Root: Insights for the Transition From Gabbronorite to Garnet Granulite in the Central Qilian Belt, NE Tibet

Geochemistry, Geophysics, Geosystems
Understanding reactive melt flow is crucial for advancing our knowledge of crustal differentiation; however, the mechanisms governing melt migration remain debated, particularly in deep magmatic arc environments.
Xiao‐Kui Sun, Chao Wang, Nathan R. Daczko, Xiao‐Ying Liao, Ji‐Heng Zhang, Wen‐Qiang Yang, Liang Liu   +6 more
doaj   +1 more source

The temperature and pressure conditions of Grenville-age granulite facies metamorphism of the Oaxacan Complex, southern Mexico

Revista Mexicana de Ciencias Geológicas, 2019
The temperatura, pressure and fluid conditions at peak of granulite facies metamorphism have been determined for charnockites, marbles and quartzofeldspathic gneises in the Grenville-age Oaxaca Complex, southern Mexico… In order to continue, download ...
Claudia I. Mora, John W. Valley, Fernando Ortega-Gutiérrez   +2 more
doaj  

Granulite Facies Metamorphism in the Coast Range Crystalline Belt

, 1975
Mineral assemblages diagnostic of the granulite facies of metamorphism occur between Terrace and Prince Rupert, British Columbia. The estimated pressure (5–8 kb) and temperature (750–850 °C) of metamorphism are important constraints in unravelling the ...
Lincoln S. Hollister
core   +1 more source

Xenolith Zircons Record the Long Geological History of India‐Asia Convergence: Results From U‐Pb Depth Profiling

Geophysical Research Letters
Continental crust forms in magmatic arcs and transforms through collision, as seen in the Tibetan crust shaped by Neo‐Tethyan subduction and India‐Asia collision.
Wen‐Rui Sun, Roberto Weinberg, Rui Wang, Li Liu, Liang‐Liang Zhang   +4 more
doaj   +1 more source

Granulite grade supracrustal assemblages of the Quad Creek area, eastern Beartooth Mountains, Montana.

, 1982
Ten samples of these lower granulite-grade supracrustal rocks yield a Rb/Sr isochron of 3390 + or - 55 m.y. with an intial Sr ratio of 0.6991 + or - 0.0007.
Lee- Berman, R., Mueller, P. A., Henry, D. J., Wooden, J. L., Warner, J. L.   +4 more
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~990 Ma peak granulitic metamorphism and amalgamation of Oaxaquia, Mexico: U–Pb zircon geochronological and common Pb isotopic data

Revista Mexicana de Ciencias Geológicas, 2018
The ~1 Ga Oaxacan Complex is the largest exposure of the Oaxaquia terrane of Mexico. Microprobe analysis of co-existing ortho- and clino-pyroxene, garnet, ilmenite and plagioclase indicate metamorphic conditions of 735 ± 5° C and 7.7 ± 0.1 kbar in the ...
Luigi A. Solari, J. Duncan Keppie, Fernando Ortega-Gutiérrez, Kenneth L. Cameron, Robert Lopez   +4 more
doaj  

P-T-t evolution of ultrahigh-temperature granulites from the Saxon Granulite Massif, Germany : Part I: Petrology.

, 2001
The granulites of the Saxon Granulite Massif equilibrated at high pressure and ultrahigh temperature and were exhumed in large part under near-isothermal decompression.
Rötzler, Jochen, Romer, Rolf L. (Dr.)
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Heat transfer by fluids in granulite metamorphism [PDF]

, 1988
The thermal role of fluids in granulite metamorphism was presented. It was shown that for granulites to be formed in the middle crust, heat must be advected by either magma or by volatile fluids, such as water or CO2.
Morgan, Paul, Ashwal, Lewis D.
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Nature and origin of fluids in granulite facies metamorphism [PDF]

, 1988
The various models for the nature and origin of fluids in granulite facies metamorphism were summarized. Field and petrologic evidence exists for both fluid-absent and fluid-present deep crustal metamorphism.
Newton, R. C.
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