Results 31 to 40 of about 8,120 (216)

Banded amphibolites in the Alps: a new interpretation in relation to early Paleozoic peraluminous magmatism

open access: yesSwiss Journal of Geosciences, 2020
The Strona-Ceneri Zone is located south of the Insubric line, where Alpine overprint is mainly brittle and of low grade or even absent. Apart from the unmetamorphic Permo-Carboniferous sediments and intrusiva the Strona-Ceneri Zone is an Ordovician ...
Roger Zurbriggen
doaj   +1 more source

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

open access: yesFrontiers 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

Melt inclusions in migmatites and granulites [PDF]

open access: yesJournal of the Virtual Explorer, 2011
Important advances have been made during the last 15 years in the study of melt inclusions in minerals from migmatites and granulites. Pioneer work on high temperature metapelitic anatectic enclaves in peraluminous dacites from SE Spain has shown that droplets of granitic melt can be trapped by minerals growing during incongruent melting reactions, and
CESARE, BERNARDO   +3 more
openaire   +2 more sources

Dimension Stone: Exploration and Exploitation in parts of Lokoja, North-Central Nigeria

open access: yesJournal of Applied Sciences and Environmental Management, 2020
The study area Lokoja is the home to the confluence between Rivers Niger and Benue. Dimension stone is cut or quarried stone in accordance with specific dimensions, generally more abundant and are used in greater quantities than ore minerals in pavement
N. Egesi, J.I. Nwosu
doaj   +1 more source

Extreme extension across Seram and Ambon, eastern Indonesia: evidence for Banda slab rollback [PDF]

open access: yesSolid Earth, 2013
The island of Seram, which lies in the northern part of the 180°-curved Banda Arc, has previously been interpreted as a fold-and-thrust belt formed during arc-continent collision, which incorporates ophiolites intruded by granites thought to have been ...
J. M. Pownall, R. Hall, I. M. Watkinson
doaj   +1 more source

The Djourdé-Sinassi magmatic-migmatitic complex, Northern Cameroon: a record of vertical extrusion of the Pan-African partially molten orogenic root

open access: yesBSGF - Earth Sciences Bulletin
The Djourdé-Sinassi magmatic-migmatitic complex is part of the juvenile Neoproterozoic Garoua Domain located in Northern Cameroon. It is surrounded by the Zalbi, Poli and Rey-Bouba greenstone belts, limited to the east by the sinistral Tcholliré-Banyo ...
Tiani Djuimou Suzanne   +6 more
doaj   +1 more source

Stepwise magma migration and accumulation processes and their effect on extracted melt chemistry [PDF]

open access: yesEstonian Journal of Earth Sciences, 2009
Numerical and analogue models suggest that melt production, its segregation from the solid matrix and subsequent transport and accumulation are highly dynamic and stepwise processes exhibiting scale invariant patterns in both time and length scales ...
Urtson, Kristjan, Soesoo, Alvar
doaj  

Relationship between deformation structure and partial melting in pelitic migmatites of Hamaden region, Sanandaj-Sirjan Zone [PDF]

open access: yesپترولوژی
The present paper describes some field characteristics of deformation in a high-strain and high temperature zone in migmatitic rocks, with several kilometers wide occurring in Hamedan and Toyserkan regions, NW of the Sanandaj- Sirjan Zone.
Seyedeh Razieh Jafari, Leyli Izadi Kian
doaj   +1 more source

Human Health Risk Assessment From Exposure to Toxic Metals in Soils and Leafy Vegetables in Smallholder Farms of Northeastern Brazil

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT This study assessed human health risks associated with exposure to potentially toxic metals (PTMs) in soils and leafy vegetables cultivated in smallholder agricultural systems in Northeastern Brazil. Soil and vegetable samples were collected from 18 agricultural areas and analyzed for cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), nickel
Fernando Ferreira da Cunha Filho   +5 more
wiley   +1 more source

Physicochemical conditions of the formation of the Larino granite-gneiss dome (South Ural)

open access: yesGeoresursy
The Larino granite-gneiss dome is located on the border of the Aramil-Sukhtelya and Magnitogorsk megazones and is a two-headed anticlinal structure, the nuclear parts of which are composed of granitoids of the Pervomai and Larino massifs, and their ...
V. I. Snachev   +2 more
doaj   +1 more source

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