Results 101 to 110 of about 298,753 (226)

High-K calc-alkaline granitoid rocks in the Central Iberian Zone: the Garlitos-El Borracho area

, 1996
New petrographic and chemical data on the Garlitos pluton and other associated igneous rocks in the Almadén area have shown a high-K calc-alkaline character and clear simiarities with other calc-alkaline granitoids, in particular the lithotypes dominant ...
Pascual Martínez, Emilio, Higueras, Pablo L., Morata Céspedes, Diego, Donaire Romero, Teodosio   +3 more
core  

Editorial for Special Issue “Genesis of Calc-Alkaline Granitic Rocks: Evidence from Petrology and Geochemistry”

Calc-alkaline granitic rocks are fundamental components of continental crust, forming large batholiths in orogenic belts and intrusions across various tectonic regimes [...
Shuang-Qing Li, Long Chen
core   +1 more source

A few thoughts on the diamondiferous nature of lamprophyres from Wajrakarur Kimberlite Field, Southern India

Mineralogia
Lamprophyre Clan Rocks (LCRs) such as lamprophyres, lamproites and kimberlites are reported from many parts of the cratonic areas in India, especially the diamondiferous Eastern Dharwar Craton (EDC).
Phani P. Ramesh Chandra, Kamvisis Ioannis   +1 more
doaj   +1 more source

Calcic amphiboles in calc-alkaline and alkaline magmas: thermobarometric and chemometric empirical equations validup to 1,130 °C and 2.2 GPa

, 2011
The following article presents constraints of the stability of Mg-rich (Mg/(Mg + Fe2+) >0.5) calcic amphibole in both calc-alkaline and alkaline magmas, testing of previous thermobarometers, and formulation of new empirical equations that take into ...
Filippo Ridolfi, RIDOLFI, FILIPPO, RENZULLI, ALBERTO, Alberto Renzulli   +3 more
core   +1 more source

SALINE DEPOSITS AND ALKALINE MAGMAT1SM:A GENETIC MODEL [PDF]

Journal of Sciences, Islamic Republic of Iran, 1990
The temporal-spatial coincidence of saline deposits with rifting and alkaline magmatism has now become a commonly accepted fact. The congruency of these three phenomena implies logically, their trilateral genetic interrelation.
doaj  

Petrogenesis of the Lalezar granitoid intrusions (Kerman Province - Iran) [PDF]

Journal of Sciences, Islamic Republic of Iran, 2015
The Lalezar granitoids crop out within volcanic successions of the Urumieh-Dokhtar Magmatic Assemblage (UDMA). These granitoids have a range from gabbro-diorites to granites in composition.
S. M. Niktabar, A. Moradian, H. Ahmadipour1, J. F. Santos, M. H. Mendes   +4 more
doaj  

Calc-alkaline lamprophyres from the Pilbara Block, Western Australia

, 1988
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Rock, N M S, Barley, Mark E.
openaire   +1 more source

Pb/Pb single-zircon dating of paleoproterozoic calc-alkaline/alkaline magmatism in the southeastern São Franciso Craton region, Brazil.

, 2000
Two chemically and petrographically distinct intrusive bodies (a calc-alkaline trondhjemite and an alkaline quartz-syenite cut by granitic aplites) occur in the vicinity of Piranga (Minas Gerais State), near the southeastern border of the São Francisco ...
Evangelista, Hanna Jordt, Macambira, Moacir Jose Buenano, Peres, Guilherme Gravina   +2 more
core   +1 more source

Deep-Water Volcaniclastic Layers in the Late Messinian Apennines Foreland Basin Unravel the First Calc-Alkaline Rhyolitic Eruption in the Central Italy Magmatic System

Geosciences
A package of upper Messinian volcaniclastic layers (UMVLs), exposed in the deep-water foreland basin system of the central Apennines (Italy), is the volcanic product of a rhyolitic eruption dated to 5.5 Ma.
Michela Principi, Fabio Arzilli, Giulia Bosio, Daniele Morgavi, Claudio N. Di Celma   +4 more
doaj   +1 more source

Calc-alkaline magmatism and rifting of the deep-water volcano of Marsili (Aeolian back-arc, Tyrrhenian Sea)

, 1994
Geochemistry and mineral chemistry data indicate that new lava samples recovered from a large depth interval of Marsili volcano (southern Tyrrhenian Sea) are calc-alkaline.
Savelli C., Gasparotto G.
core   +1 more source