Results 11 to 20 of about 542 (136)

Genetic relationships between skarn ore deposits and magmatic activity in the Ahar region, Western Alborz, NW Iran

open access: yesGeologica Carpathica, 2014
Paleocene to Oligocene tectonic processes in northwest Iran resulted in extensive I-type calc-alkaline and alkaline magmatic activity in the Ahar region.
Mollai Habib   +2 more
doaj   +1 more source

Chemical and Mineralogical Characteristics of the Microscopic-sized Epidotes in the Metamorphic Basement Rocks within the Late Cretaceous Hatip Ophiolitic Melange in Konya Central Southern Turkey

open access: yesHittite Journal of Science and Engineering, 2019
A metamorphism in green-schist facies conditions. The epidote crystals is subhedral to eu- hedral, with high Al2O3 26-30 % and low Fe2O3 5–8% contents.
Kerim Kocak, Raziye Merve Kaya
doaj   +1 more source

Magnetic petrology of the Água Azul and Água Limpa granodiorites, southern portion of the Carajás Domain – Pará [PDF]

open access: yesGeologia USP. Série Científica, 2013
The Água Azul and Água Limpa granodiorites (AAGrd and ALGrd, respectively) outcrop in the extreme southern of the Carajás Domain as two elongated bodies following the EW regional trend and were previously included in the Xingu Complex. The ALGrd consists
Eleilson Oliveira Gabriel   +1 more
doaj   +1 more source

Metamorphic Evolution of Garnet-bearing Epidote-Barroisite Schist from the Meratus Complex in South Kalimantan, Indonesia

open access: yesIndonesian Journal on Geoscience, 2015
DOI:10.17014/ijog.2.3.139-156This paper presents metamorphic evolution of metamorphic rocks from the Meratus Complex in South Kalimantan, Indonesia.
Nugroho Imam Setiawan   +4 more
doaj   +1 more source

Mineralogical and petrographic characteristics of the host rocks of the Pervaya Rudnaya Gorka Fe-skarn ore occurrence

open access: yesRUDN Journal of Engineering Research, 2021
The article discusses the mineralogical and petrographic features of the metamorphic formations of the poorly studied and promising the Pervaya Rudnaya Gorka Fe-scarn ore occurrence (Kongor ore region), localized in the Voikar, and the typification of ...
Ekaterina S. Ivanova, Julia N. Ivanova
doaj   +1 more source

Crystallization conditions of two adjacent epidote + diopside-bearing granitic stocks, northeastern Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2021
The Tamboril and Olho d’Água granitic stocks are part of the abundant calc-alkalic magmatic epidote-bearing granitic rocks in the Cachoeirinha–Salgueiro Terrane (CST) in the Transversal Zone Domain, northeastern Brazil. The equigranular Olho d’Água stock
RENAN SIQUEIRA   +2 more
doaj   +1 more source

Insights from elastic thermobarometry into exhumation of high-pressure metamorphic rocks from Syros, Greece [PDF]

open access: yesSolid Earth, 2021
Retrograde metamorphic rocks provide key insights into the pressure–temperature (P–T) evolution of exhumed material, and resultant P–T constraints have direct implications for the mechanical and thermal conditions of subduction interfaces.
M. Cisneros   +8 more
doaj   +1 more source

Deformation-Induced and Reaction-Enhanced Permeability in Metabasic Gneisses, Iona, Scotland: Controls and Scales of Retrograde Fluid Movement

open access: yesGeofluids, 2021
The spatial distribution of greenschist-facies retrograde reaction products in metabasic gneisses from Iona, western Scotland, has been investigated. The retrograde products may be broadly accounted for by a single reaction, but their different spatial ...
Tim J. Dempster   +5 more
doaj   +1 more source

Solid Solution Between Epidote and Hancockite from Nezilovo, Macedonia

open access: yesGeologia Croatica, 2010
A solid solution between the epidote formula and hancockite formula (Pb equivalent of epidote) was found in the “mixed series” of the Pre-cambrian complex in the central part of the Pelagonian massif near the village of Nezilovo.
Simeon Jančev, Vladimir Bermanec
doaj   +1 more source

The Infrared Spectroscopy Characteristics of Alteration and Mineralizationin the Porphyry Copper Deposit in Pulang, Yunnan Province

open access: yesYankuang ceshi, 2021
BACKGROUND Infrared spectroscopy technology, as a green, fast, non-destructive and accurate mineral detection technology, has drawn widespread attention of geologists all over the world in recent years.
GUO Dong-xu   +3 more
doaj   +1 more source

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