Results 61 to 70 of about 374 (186)

Migmatites, Melting, and Metamorphism

Eos, Transactions American Geophysical Union, 1985
This is a praiseworthy collection of papers that illustrates the great range of interests necessary to understand migmatite genesis. The strength of the collection lies in its broad approach to the study of migmatites and its emphasis on the link between “igneous” and “metamorphic” processes.
openaire   +1 more source

Exploring the Gravimetric and Geochronological Links in Ancient Terranes of the São Francisco Craton and Borborema Province, NE‐Brazil

Terra Nova, Volume 38, Issue 2, Page 77-86, April 2026.
ABSTRACT Deep crustal fragments and structural lineaments identified through satellite gravity data provide evidence for the extension of the reworked ancient basement of the Central African Block into the northern São Francisco Craton and southern Borborema Province.
Douglas Teixeira Martins, Wagner da Silva Amaral, Felipe Holanda dos Santos, Evilarde Uchôa Filho   +3 more
wiley   +1 more source

A Thermodynamic Framework for Turing‐Type Instabilities in Porous Media: Part I Theory

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Pattern formation in geological materials is commonly described using analogies to Turing‐type reaction–diffusion systems, yet a unifying thermodynamic explanation remains elusive. Here we develop a multiscale, thermodynamically consistent framework for pattern‐forming instabilities in porous media undergoing coupled thermo–hydro–mechanical ...
Klaus Regenauer‐Lieb, Manman Hu, Qingpei Sun, Chong Liu, Zhennan Zhu, Victor Calo   +5 more
wiley   +1 more source

Exploring the relationships between shear zones and granites: field and microstructural data for contrasting case studies of the Borborema Province (NE Brazil)

Geologia USP. Série Científica, 2021
We explore meso- and microstructural features of granites closely related to strike-slip shear zones in the Borborema Province, NE Brazil. The Riacho do Icó Stock is an en-cornue intrusion aged at ca. 607 Ma.
Lauro Cézar Montefalco de Lira Santos
doaj  

PETROGENESIS OF S-TYPE GRANITOID MAGMATISM ON THE MARGIN OF THE TUVA-MONGOLIAN MASSIF (WESTERN SANGILEN, SOUTHEASTERN TUVA): SETTINGS, AGE, AND FORMATION STAGES

Геодинамика и тектонофизика
This study integrates the isotope-geochronological (zircon U-Pb dating), petrogeochemical and structural-petrological data, as well as the data on garnet composition and fluid inclusions in leucogranite quartz, to characterize S-type granitoid magmatism ...
I. V. Karmysheva, V. G. Vladimirov, O. V. Shemelina, D. V. Semenova, V. A. Yakovlev, E. A. Pronyakin, A. E. Smolyakova   +6 more
doaj   +1 more source

Oligocene partial melting in the Takab metamorphic complex, NW Iran: Evidence from in situ U-Pb geochronology [PDF]

Journal of Sciences, Islamic Republic of Iran, 2013
U-Pb ages obtained on zircons from the investigated migmatites place new constraints on the evolution of the crustal rocks in the Takab area. SHRIMP U-Pb dating of inherited zircon in the melanosome parts of mafic migmatites from the Takab complex gives ...
M. Moazzen
doaj  

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

Radiogenic heat production estimation towards sustainable energy drive in northeastern Nigeria. [PDF]

Heliyon, 2023
Yusuf AB, Lim HS, Ahmad Abir I.
europepmc   +1 more source

Rare-metal mineralization and crust-derived magmatism in a collisional orogen: the Variscan metallogenic odyssey of the Sioule region (French Massif Central)

BSGF - Earth Sciences Bulletin
The Sioule region in the northern part of the French Massif Central of the Variscan belt hosts the Echassières complex, where a large W(-Sn) quartz vein system was intruded by the Beauvoir rare-metal granite (RMG) hosting disseminated Sn, Nb-Ta and Li ...
Ballouard Christophe, Carr Patrick A., Monnier Loïs, Fidalgo Jean-Charles, Rocher Océane, Esteves Nicolas, Laurent Oscar, Daoulas-Gérardin Marie, Peiffert Chantal, Declercq Lou, Mercadier Julien, Plunder Alexis, Melleton Jérémie   +12 more
doaj   +1 more source

High-alumina gneisses of the Chupa Formation in the Belomorian Mobile Belt: metamorphic conditions, partial melting, and the age of migmatites

Записки Горного института
Migmatized gneisses of the Chupa paragneiss Formation in the Belomorian Mobile Belt (BMB) of the Fennoscandian Shield have been studied, and the conditions of partial melting during high-grade metamorphism of the rocks were determined.
Anastasiya V. Yurchenko, Shauket K. Baltybaev, Tatyana A. Myskova   +2 more
doaj