Results 1 to 10 of about 373,723 (189)

Effect of Terrigenous Sediment Addition on the Generation of Arc Silicic Magma: Constraints From the Comparative Partial Melting Experiment at 1.5 GPa

Frontiers in Earth Science, 2022
To assess the effects of sediment addition on the partial melting of subducted oceanic crust and generation of arc silicic magma, a series of comparative partial melting experiments on a garnet plagioamphibolite and a 90 wt% garnet plagioamphibolite + 10 
Chunjuan Zang, Chunjuan Zang, Chunjuan Zang, Mingliang Wang, Mingliang Wang, Mingliang Wang   +5 more
doaj   +1 more source

The Role of Fluids in Melting the Continental Crust and Generating Granitoids: An Overview

Geosciences, 2022
Granite is a distinctive constituent part of the continental crust on Earth, the formation and evolution of which have long been hot research topics.
Jiahao Li, Xing Ding, Junfeng Liu
doaj   +1 more source

Petrology and geochemical modeling (Ba-W-Sn) of the Peña do Seo granitoids (West Asturian-Leonese Zone, León, Spain)

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, Luis González-Menéndez, Alba Lozano, Fernando Gómez-Fernández, Ana María Castañón   +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, Ahmad Ahamadi Khalaji, Ayoub Veisinia, zahra tahmasbi, ahman Rahimzade   +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

Timescales of Partial Melting and Melt Crystallization in the Eastern Himalayan Orogen: Insights From Zircon Petrochronology

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, Zeming Zhang, Matthew J. Kohn, Zhengbin Gou   +3 more
doaj   +1 more source

Petrogenesis of Neoproterozoic Ultramafic Rocks, Wadi Ibib–Wadi Shani, South Eastern Desert, Egypt: Constraints from Whole Rock and Mineral Chemistry

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, Gehad M. Saleh, Farrage M. Khaleal, Mamdooh Alwetaishi   +3 more
doaj   +1 more source

Spinel harzburgite–derived silicate melts forming sulfide-bearing orthopyroxenite in the lithosphere. Part 2: Sulfide compositions and their chalcophile and highly siderophile trace element signatures

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

Petrologic and geochronological constraints on the polymetamorphic evolution of the collisional granites, Araçuaí Orogen (SE Brazil)

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, MARILANE G. MELO, CRISTIANO LANA, RODSON A. MARQUES   +3 more
doaj   +1 more source

Double Power-Law in Leucosome Width Distribution: Implications for Recognizing Melt Movement in Migmatites

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, Christian Ahläng, Kaisa Nikkilä, Alvar Soesoo, Olav Eklund   +4 more
doaj   +1 more source