Results 81 to 90 of about 2,848 (221)

Age and metamorphic conditions of the granulites from Capral-Jegessky synclinoria, Anabar shield

Записки Горного института, 2018
The paper presents the results of the isotope, geochemical and thermobarometric study of plagio-crystalline schist containing in the Upper Anabar series of the Anabar Shield.
L. Yu. Sergeeva, A. V. Berezin, N. I. Gusev, S. G. Skublov, A. E. Mel'nik   +4 more
doaj   +1 more source

High-pressure mafic granulites in the Trans-North China Orogen: Tectonic significance and age

, 2006
High-pressure mafic granulites (including retrograded eclogites) have been reported from the Trans-North China Orogen, a Paleoproterozoic orogenic belt along which two discrete continental blocks, referred to as the Eastern and Western Blocks, were ...
Zhao, GC, Li, SZ, Zhao, G, Sun, M, Liu, S, Wilde, SA, Liu, SW, Li, S, Zhang, J   +8 more
core   +1 more source

Paleoproterozoic Saltakh Pluton, Anabar Shield: mineralogical composition, age and a geodynamic setting

Записки Горного института
The Saltakh Massif is located in the northern Anabar Shield, in the Saltakh shear-zone. It consists of two-pyroxene schists and plagiogneisses metamorphosed under granulite-facies conditions.
Nikolai I. Gusev, Lyudmila Yu. Romanova
doaj  

Protolith age of Santa Maria Chico granulites dated on zircons from an associated amphibolite-facies granodiorite in southernmost Brazil

Anais da Academia Brasileira de Ciências, 2008
U-Pb dating of zircon was undertaken with the Beijing SHRIMP II (sensitive high resolution ion microprobe) on anamphibolite facies granodiorite and an almandine-albite granulite from the Santa Maria Chico Granulitic Complex, southern Brazilian Shield ...
Léo A. Hartmann, Dunyi Liu, Yenbin Wang, Hans-Joachim Massonne, João O.S. Santos   +4 more
doaj   +1 more source

Applications and limitations of thermobarometry in migmatites and granulites using as an example rocks of the Araçuaí Orogen in southern Bahia, including a discussion on the tectonic meaning of the current results

Brazilian Journal of Geology
In southern Bahia, there are outcrops of migmatites and granulites in the Jequitinhonha Complex, which is part of the northern portion of the Araçuaí Orogen.
Renato Moraes, Christian Nicollet, Johildo Salomão Figueiredo Barbosa, Reinhardt Adolfo Fuck, Antônio Rabelo Sampaio   +4 more
doaj   +1 more source

Copper isotope evidence for sulfide fractionation and lower crustal foundering in making continental crust. [PDF]

Sci Adv, 2023
Liu SA, Rudnick RL, Liu WR, Teng FZ, Wu TH, Wang ZZ.   +5 more
europepmc   +1 more source

Geochemistry of magnesian granulites in feldspathic lunar meteorites Allan Hills A81005 and Dhofar 309

, 2007
Magnesian granulites in Allan Hills A81005 and Dhofar 309 may possess the geochemical signature of the Moon's Feldspathic Highlands Terrane (FHT). Previous work on Apollo granulites suggests the presence of a high Mg/Fe, feldspathic, rare earth element ...
Maloy, Amy Kathleen
core  

Widespread 18O depletion in some precambrian granulites of Australia

, 1983
In the Strangways Range a broad tract of lower Proterozoic mafic and silicic granulites with δ 18O = 0.1 to 7.3% is depleted in 18O on average by 2-47% compared with high-grade gneisses and granitoids of Canada and other shields.
Wilson A.F., Baksi A.K.
core   +1 more source

The role of continental subduction in mantle metasomatism and carbon recycling revealed by melt inclusions in UHP eclogites. [PDF]

Sci Adv, 2023
Borghini A, Nicoli G, Ferrero S, O'Brien PJ, Laurent O, Remusat L, Borghini G, Milani S.   +7 more
europepmc   +1 more source

Geodynamics and Ore Content of Proterozoic Maphites in the Central Part of the Aldan-Stanovoy Shield (Southern North Asian Craton)

Геодинамика и тектонофизика
The study of diverse mantle-derived igneous complexes is important for interpreting geodynamic events, ore deposits formation mechanisms, and ore-forming fluid sources.
A. A. Kravchenko, A. V. Okrugin, V. I. Beryozkin, N. V. Popov, E. E. Loskutov   +4 more
doaj   +1 more source