Results 11 to 20 of about 5,714 (221)

Evolution of migmatitic granulite complexes: Implications from Lapland Granulite Belt, Part II: Isotopic dating [PDF]

open access: yesBulletin of the Geological Society of Finland, 2006
The migmatitic metapelites of the Lapland granulite belt (LGB) in the NE part of the Fennoscandian Shield represent an arc-related greywacke basin metamorphosed in the granulite facies. Detrital zircons from migmatitic metapelites are derived from 1.94 −
P. Tuisku, H. Huhma
doaj   +2 more sources

Constraining the Protoliths of the Apollo Granulite Suite [PDF]

open access: yesThe Planetary Science Journal
The Apollo granulite suite represents the metamorphosed products of impact-contaminated polymict and monomict lunar breccias. We combine bulk and mineral major and trace element systematics with noble gas isotopes to constrain the highland lithologies ...
J. F. Pernet-Fisher   +4 more
doaj   +2 more sources

Granulite-facies metamorphism at ca. 570-580 Ma in the Porangatu Granulite Complex, central Brazil : implications for the evolution of the transbrasiliano Lineament [PDF]

open access: yes, 2017
O Complexo Granulítico Porangatu está exposto na porção central da Província Tocantins, do Neoproterozoico, no centro do Brasil, ao longo da fronteira entre o Cinturão Brasília, a leste, e o Cinturão Araguaia, a oeste. Esta região faz parte do sistema de
Marcio Martins Pimentel (5376821)   +7 more
core   +1 more source

MESO-NEOPROTEROZOIC GRENVILLE-SVECONORWEGIAN INTRACONTINENTAL OROGEN: HISTORY, TECTONICS, GEODYNAMICS

open access: yesГеодинамика и тектонофизика, 2017
The objective of this paper is to represent the main features inherent to Grenville-Sveconorwegian Orogen (GSNO) and to propose a model of tectonic and geodynamic evolution of this orogen based on the results of research concerning similar Precambrian ...
M. V. Mints
doaj   +1 more source

RETROGRESSION OF ORTHOPYROXENE – BEARING CHARNOCKITIC GNEISS AROUND IKERAM-IBARAM AKOKO, SOUTHWESTERN NIGERIA [PDF]

open access: yesGeological Behavior
This paper presents the petrography and mineral chemistry of charnockitic gneisses exposed at Ikeram-Ibaram within the Precambrian Basement Complex of southwestern Nigeria. Quartz, plagioclase, perthite, amphibole, biotite and orthopyroxene are essential
Anthony Victor Oyeshomo   +2 more
doaj   +1 more source

Evolution of migmatitic granulite complexes: Implications from Lapland Granulite Belt, Part I: Metamorphic geology [PDF]

open access: yesBulletin of the Geological Society of Finland, 2006
The Palaeoproterozoic Lapland granulite belt was juxtaposed between Archaean and Proterozoic terrains in the NE part of the Fennoscandian Shield concurrently with the accretion of Svecofennian arc complexes at ~1.9 Ga.
P. Tuisku, P. Mikkola, H. Huhma
doaj   +1 more source

Data for the granulite and pyroxenite xenoliths.

open access: yes, 2023
Data for the granulite and pyroxenite xenoliths from Western ...
Zou
core   +1 more source

Fluid-induced metamorphism and anatexis of refractory Ni-Co-Cu sulphides in subduction-related rocks [PDF]

open access: yesE3S Web of Conferences, 2019
The role of metamorphism on refractory sulfides is not well constrained. Although experiments have displayed the effectiveness of high grade metamorphism, namely granulite facies metamorphism, on sulfide anatexis, its role in the presence of other ...
Kepezhinskas Nikita
doaj   +1 more source

MECHANICAL PROPERTIES OF GRANULITE FROM HORNÍ BORY IN BOHEMIAN MASSIF

open access: yesGeoScience Engineering, 2019
Granulite represents one of the favourite rock types for the construction of an underground nuclear waste repository in the Czech Republic. Granulite from the Bohemian Massif (locality Horní Bory) was investigated in this study, with a special focus on ...
Dagmar HAVLÍČKOVÁ   +4 more
doaj   +1 more source

Discovery of Stishovite in the Prismatine-Bearing Granulite from Waldheim, Germany: A Possible Role of Supercritical Fluids of Ultrahigh-Pressure Origin

open access: yesGeosciences, 2022
For the first time in the sixty years since the synthesis of stishovite, we report unambiguous evidence of stishovite formed in the deep Earth. A minimum pressure of about 7.5 GPa at 1000 °C is necessary for the formation of stishovite, corresponding to ...
Rainer Thomas   +3 more
doaj   +1 more source

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