Results 61 to 70 of about 2,386 (223)

Structural and petrological characterization of Melechov massif host-rock migmatites [PDF]

, 2016
English abstract This work deals with the structural and petrological characteristics of migmatites surrounding Melechov massif near Humpolec. The aim was to assess the existence of multiple anatectic events that could be caused by intrusion of late ...
Zelinková, Tereza
core  

MINERALOGICAL-PETROGRAPHIC FEATURES OF SYENITIC MIGMATITES OF THE ILMENOGORSKY MIASKITE BLOCK (SOUTH URALS) [PDF]

Минералогия, 2019
Syenitic migmatites of the contact of the Ilmenogorsky miaskite block are characterized by high (>500 ppm) contents of REEs, which are mainly hosted in fluorapatite and titanite of the leucosome.
А.B. Nemov, E.V. Medvedeva, V.A. Kotlyarov, I.A. Blinov   +3 more
doaj   +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

Amphibole-bearing migmatites from the Variscan belt of NE Sardinia, Italy: partial melting of mid-Ordovician igneous sources

, 2008
Amphibole-bearing migmatites from north-eastern Sardinia, Italy, are characterized by tonalitic to granodioritic leucosomes made up of quartz, plagioclase, K-feldspar, biotite, ±amphibole, and garnet. The leucosomes show higher SiO2, Na2O, Sr and lower
FRANCESCHELLI, MARCELLO, PUXEDDU M, UTZERI D., CRUCIANI, GABRIELE, JUNG S   +4 more
core   +1 more source

Migmatites : examples from Arvika and Graestorp (Western Sweden) and Nelaug (Southern Norway) areas, results of almost isochemical partial melting / Les migmatites : exemples des régions de Arvika et Graestorp (Ouest de la Norvège) et Nelaug (Sud de la Suède), résultats d'une fusion partielle de caractère quasi-isochimique

, 1986
Three migmatite examples (Arvika, Graestorp and Nelaug) and one example of country rock (Arvika) were investigated in details. A comparison of the different migmatite layers amongst themselves and with those of the country rock layers indicates that (i ...
Gupta, Niranjan L., Johannes, Wilhelm
core   +2 more sources

Tectonics and mineralization in Sri Lanka [PDF]

Bulletin of the Geological Society of Finland, 1985
Over nine-tenths of Sri Lanka is underlain by Precambrian metasedimentary rocks, granitic gneisses and migmatites. The Highland Series (granulite facies), made up of typical metasedimentary rocks ‒ quartzites, marble, white granulites and granulitic ...
P.W. Vitanage
doaj   +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

Advancing geological and structural understanding of the Atuba Complex: a study in the Curitiba Terrane of the Southern Ribeira Belt, Southern Brazil

Brazilian Journal of Geology
The Atuba Complex occurs in the eastern region of Paraná State, located in the Southern Ribeira Belt. It is comprised of the Curitiba Terrane, northward of the Luís Alves Terrane, and southward of the Apiaí Terrane. This research was carried out by means
Michelangelo Tissi Baldin, Eduardo Salamuni, Leonardo Evangelista Lagoeiro, Emerson Sanches   +3 more
doaj   +1 more source

A Thermodynamic Framework for Turing‐Type Instabilities in Porous Media: Part II Applications

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Compaction bands, desiccation cracks, and melt segregation structures are geological patterns relying on the same fundamental manifestations of a universal Turing‐type instability mechanism, as predicted by the thermodynamically consistent reaction–cross‐diffusion framework developed in Part I (Regenauer‐Lieb et al., 2025, https://doi.org/10 ...
Klaus Regenauer‐Lieb, Manman Hu, Qingpei Sun, Chong Liu, Zhennan Zhu, Victor Calo   +5 more
wiley   +1 more source

Prograde zircon growth in migmatites

Journal of Metamorphic Geology, 2023
AbstractEmpirical studies of zircon in migmatites document features compatible with growth during heating at suprasolidus conditions. However, numerical modelling of zircon behaviour suggests that suprasolidus zircon is expected to grow only during cooling and melt crystallization.
openaire   +1 more source