Results 31 to 40 of about 18,330 (214)

High-K, I-type Tonian post-collisional magmatism in the South Delhi Terrane, NW India: Petrogenetic and tectonic implications

Geosystems and Geoenvironment
The limited whole-rock geochemical data of the granitoids exposed in the southern domain of the South Delhi Terrane, Aravalli orogen, northwestern India characterised these rocks as subduction-related continental arc I-type granites.
Manisha, Parampreet Kaur, Naveen Chaudhri   +2 more
doaj   +1 more source

Use of petrophysical data for siting of deep geological repository of radioactive waste

E3S Web of Conferences, 2017
The paper is devoted to analyzing the petrophysical properties and petrographical characteristics of Volyn region with the view to choosing the least permeable and so the most suitable geological formation for the radioactive waste disposal.
Petrenko Liliana, Shestopalov Vyacheslav
doaj   +1 more source

PALEOZOIC GRANITOID MAGMATISM OF THE URALS: THE REFLECTION OF THE STAGES OF THE GEODYNAMIC AND GEOCHEMICAL EVOLUTION OF A COLLISIONAL OROGEN

Геодинамика и тектонофизика, 2021
The Ural mobile belt is an intracontinental epioceanic orogen that has already gone through all stages of the geodynamic development. Igneous rocks formed during each stage are important indicators for understanding the evolution of this belt and ...
V. V. Kholodnov, G. Yu. Shardakova, V. N. Puchkov, G. A. Petrov, E. S. Shagalov, D. N. Salikhov, A. V. Korovko, S. V. Pribavkin, I. R. Rakhimov, N. S. Borodina   +9 more
doaj   +1 more source

Geochemical Characteristics of the Hida Granitoids in the Unazuki and Katakaigawa Areas, Central Japan

Geosciences
The Hida Belt in central Japan is a key geological unit for understanding the crustal growth of the Eurasian continent in the Mesozoic. However, while previous studies have focused primarily on geochronology, the geochemical characteristics of its rocks ...
Kazuki Oishi, Rui Kuwahara, Kazuya Shimooka, Motohiro Tsuboi   +3 more
doaj   +1 more source

High‐Titanium Zircon Rims in Rhyolite – A Reflection of Adiabatic Ascent?

Geological Journal, EarlyView.
The ascent of granitic magma from source to emplacement is rapidly achieved through dyking, resulting in negligible heat loss to the surrounding wallrock (i.e., adiabatic). Zircon growth during ascent can record the changing magma conditions including adiabatic cooling and heating, resulting in high titanium rims on low titanium cores without ...
Carson Kinney, Holden Little, Chris Yakymchuk   +2 more
wiley   +1 more source

Geological and isotopic characteristics of granites from the Western Pernambuco-Alagoas Domain: implications for the crustal evolution of the Neoproterozoic Borborema Province

Brazilian Journal of Geology
The Western Pernambuco-Alagoas Domain is a complex tectonic domain of the Southern part of the Neoproterozoic Borborema Province. It borders the Northern margin of São Francisco Craton. U-Pb and Sm-Nd data discussed in this work show that, in the Western
Rodrigo Fabiano da Cruz, Márcio Martins Pimentel, Ana Cláudia de Aguiar Accioly, Joseneusa Brilhante Rodrigues   +3 more
doaj   +1 more source

Ceramic Production and Geodiversity in Iron Age Iberia: An Archaeometric Study of Pottery from Castrejón de Capote (SW Spain)

Archaeometry, EarlyView.
ABSTRACT The hillfort of Castrejón de Capote is one of the best investigated settlements of Late Iron Age southwest Iberia. Located in the territory that the classical sources attributed to the Celtici, it was occupied between the early 4th and the 1st centuries bce.
Beatrijs de Groot, Luis Berrocal‐Rangel, Manuel Fernández‐Götz   +2 more
wiley   +1 more source

FEDOROVSKY, VALENTIN S. – THE CORYPHAEUS OF SIBERIAN GEOLOGY

Геодинамика и тектонофизика, 2015
The publication is devoted to the 80 anniversary of Valentin S. Fedorovsky, the coryphaeus of Siberian geology.
Eugene V. Sklyarov, Anatoly M. Mazukabzov, Dmitry P. Gladkochub, Tatiana V. Donskaya, Arkady M. Stanevich   +4 more
doaj   +1 more source

Secular Variation of Early Cretaceous Granitoids in Kyushu, SW Japan: The Role of Mélange Rocks as a Possible Magma Source

Frontiers in Earth Science, 2020
The Early Cretaceous volcanic-arc granitic rocks from Kyushu, SW Japan are contemporaneous with the granitic rocks of the Yanshan Orogeny (SE China) along the eastern Eurasian continental margin. The secular geochemical variations of the whole-rock major
Kenshi Suga, Meng-Wan Yeh
doaj   +1 more source

Static recrystallization of shocked calcite in Ries impact breccias

Meteoritics &Planetary Science, EarlyView.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann, Fabian Dellefant, Lina Seybold, Wolfgang W. Schmahl, Elena Sturm, Daniel Weidendorfer, Sandro Jahn, Iuliia V. Sleptsova, Stuart A. Gilder   +8 more
wiley   +1 more source