Results 1 to 10 of about 17,505 (279)

Petrogenetic processes in the ultramafic, alkaline and carbonatitic magmatism in the Kola Alkaline Province: A review [PDF]

open access: greenLithos, 2005
Igneous rocks of the Devonian Kola Alkaline Carbonatite Province (KACP) in NW Russia and eastern Finland can be classified into four groups: (a) primitive mantle-derived silica-undersaturated silicate magmas; (b) evolved alkaline and nepheline syenites; (
Hilary Downes   +4 more
core   +5 more sources

Sodic alkaline magmatism in Eastern Paraguay revisited: geochemical and petrological implications [PDF]

open access: diamondBrazilian Journal of Geology, 2023
Associated with subordinate potassic rocks, Mesozoic to Cenozoic sodic alkaline rocks are represented by four distinct provinces in Eastern Paraguay: Alto Paraguay, Central, Misiones, and Asunción; additional Rio Apa and Amambay provinces are exclusively
Celso de Barros Gomes   +2 more
doaj   +2 more sources

On the participation of natural salts in alkaline magmatism Article 1. Natural salt-alkaline associations

open access: diamondЛитосфера, 2018
The article is devoted to the analysis of spatio-temporal relationships of natural salts and alkaline magmatic complexes in order to determine the geological probability of the participation of salts in alkaline magmatism.
Galina A. Belenitskaya
doaj   +3 more sources

The Role of Continental Alkaline Magmatism in Mantle Carbon Outflux Constrained by a Machine Learning Analysis of Zircon [PDF]

open access: goldGeophysical Research Letters
Continental alkaline magmatism has been suggested to play a significant role in releasing deep mantle carbon into the atmosphere, which can greatly impact the global climate.
Lu Wang   +10 more
doaj   +2 more sources

Peralkaline and alkaline magmatism of the Ossa-Morena zone (SW Iberia): Age, source, and implications for the Paleozoic evolution of Gondwanan lithosphere [PDF]

open access: gold, 2014
The Ossa-Morena zone in SW Iberia represents a section of the northern margin of West Gondwana that formed part of a Cordilleran-type orogenic system during the Neoproterozoic (Cadomian orogeny).
Rubén Díez Fernández   +2 more
openalex   +5 more sources

Evolution of arc magmatic cycles from the Carboniferous to the Early Cretaceous in the western paleomargin of Gondwana, north of the Andes

open access: yesBoletín Geológico, 2022
This work presents a considerable volume of new and compiled data indicating that arc magmatism in the western paleomargin of Gondwana began in the Carboniferous and continued during the Permian and Early Triassic.
Gabriel Rodríguez García   +4 more
doaj   +1 more source

Middle Miocene forearc alkaline magmatism in Amami-Oshima Island, central Ryukyu Arc: implications for paleoreconstruction of Shikoku Basin

open access: yesEarth, Planets and Space, 2023
During the middle Miocene, forearc alkaline magmatism occurred in the Outer Zone of Southwest Japan and the northern Ryukyu Arc, resulting in the formation of forearc alkaline basaltic rocks with ocean island basalt (OIB)-like chemical signatures.
Ginta Motohashi   +5 more
doaj   +1 more source

AGE AND SOURCE CHARACTERISTICS OF THE YUZHNOE AND ULAN-UDE REE-FLUORITE OCCURRENCES ASSOCIATED WITH CARBONATITE MAGMATISM (WESTERN TRANSBAIKALIA, RUSSIA)

open access: yesГеодинамика и тектонофизика, 2023
The article presents new data on the age and isotopic (Sr, Nd) characteristics of the Yuzhnoe and Ulan-Ude REE-fluorite occurrences, paragenetically related to alkaline carbonatite magmatism.
A. A. Redina   +4 more
doaj   +1 more source

Petrographic and geochemical characteristics of olivine basalts from east of Nehbandan and Chahchocho (Sistan suture zone, eastern Iran) [PDF]

open access: yesپترولوژی, 2020
Olivine basalts from east of Nehbandan and Chahchocho regions belong to sodic alkaline and transitional magma series. Compared to alkaline olivine basalts (AOB), the transitional olivine basalts (TOB) have higher MgO, SiO2, Ni, Cr, Ba, Th, Pb, and U, and
Neda Mokhtari   +2 more
doaj   +1 more source

Karakteristik Unsur Jejak Dalam Diskriminasi Magmatisme Granitoid Pulau Bangka [PDF]

open access: yesEksplorium: Buletin Pusat Pengembangan Bahan Galian Nuklir, 2015
Geology of Bangka Island consists by variation of granite as Klabat Granitoid scattered in various locations. Trace elements can be applied in magmatism discrimination of granitoid.The purpose of this study was to determine the characteristics Bangka ...
Kurnia Setiawan Widana, Bambang Priadi
doaj   +1 more source

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