Results 11 to 20 of about 2,429,367 (395)
Geogaceta, 2023 The Cadafresnas granites and granitoid breccias (Peña do Seo, W of León) are small post-tectonic stocks of Variscan age related to W-Sn mineralizations.
Pablo Caldevilla Domínguez +4 more
doaj +1 more source
The study of mineral chemistry of the Harzburgite in the Noorabad-Harsin ophiolite complex: Evidence from the evolution of partial melting of mantle peridotite from the deep ocean to the subduction zone [PDF]
پترولوژی, 2020 The Noorabad-Harsin ophiolite complex as part of the Kermanshah ophiolite is located in the high Zagros zone. The ophiolitic complex from the lower part to upper part is composed of serpentinized peridotites, layered gabbro, isotropic gabbro ...
Samaneh Falah +4 more
doaj +1 more source
Relationships between sanukitoids and crust-derived melts and their implications for the diversity of Neoarchaean granitoids: A case study from Surmansuo and nearby areas, Eastern Finland [PDF]
Bulletin of the Geological Society of Finland, 2014 We present new isotopic data (U-Pb and Sm-Nd) from the Neoarchean granitoids of the Lentua complex, which is a part of the Western Karelia subprovince of the Fennoscandian Shield.
P. Mikkola, E. Heilimo, H. Huhma
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2021 Revealing the timescales of metamorphic and anatectic processes is central to our understanding of tectonic evolution of collisional orogens. High‐temperature migmatites and leucogranites are well exposed in the Himalayan orogenic core, making it an ...
Huixia Ding +3 more
doaj +1 more source
Applied Sciences, 2021 This contribution deals with new geology, petrography, and bulk-rock/mineral chemistry of the poorly studied ultramafics of Wadi Ibib–Wadi Shani (WI–WS) district, South Eastern Desert, Egypt. These ultramafics are dismembered ophiolitic rocks that can be
El Saeed R. Lasheen +3 more
doaj +1 more source
Anhydrous partial melting of spinel Iherzolites from 3.5 to 20 kbar: Composition of partial melts
International Kimberlite Conference Extended Abstracts: 1995, 2019 Vasily V. Bulatov +2 more
openaire +3 more sources
Frontiers in Earth Science, 2022 In the first article, we have reported petrological data for a new, glass-bearing orthopyroxenite vein cutting a sub-arc mantle xenolith from Kamchatka.
A. Bénard
doaj +1 more source
Anais da Academia Brasileira de Ciências, 2021 Collisional granites of the Araçuaí Orogen, southeastern Brazil, record petrological and geochronological evidence for multiple crustal melting during the orogeny evolution. U-Pb zircon data indicate that these granites crystallized at 586 ± 2 M.y.
SANDRO MAURI +3 more
doaj +1 more source
Seismic evidence for partial melt below tectonic plates [PDF]
Nature, 2020 <p>The seismic low-velocity zone (LVZ) of the upper mantle is generally associated with a low-viscosity asthenosphere that has a key role in decoupling tectonic plates from the mantle. However, the origin of the LVZ remains unclear. Some studies attribute its low seismic velocities to a small amount of partial melt of minerals in the ...
Debayle, Eric +3 more
openaire +4 more sources
Frontiers in Earth Science, 2020 Leucosome sizes in migmatites has been shown to follow power-law distribution, which is indicative of self-organized criticality governing accumulation and transport of partial melts in anatexis.
Anna Saukko +4 more
doaj +1 more source