Results 21 to 30 of about 1,350 (208)

Geochemistry, petrogenesis, and tectonic setting of Nepheline syenite intrusive rocks in Razgah Sarab, East of Azerbaijan Province [PDF]

پترولوژی, 2023
Razgah, Kalibar, and Bozghosh intrusive rocks, located in East Azarbaijan province, are among the most important alkaline nepheline syenite rocks known in Iran.
Ali Ghasemi, Akramosadat Mirlohi, Mehran Farahmandian   +2 more
doaj   +1 more source

Miocene lamprophyre and felsic volcanics in the outer zone of SW Japan: arc building through multiple sources in an active convergent margin

, 2023
Subduction-related magmatism is a significant contributor to arc building and continental growth. In the active convergent margin of the SW Japan arc, voluminous volcanic rocks and mafic dykes formed through subduction and back-arc rifting during Miocene.
Hai-Dong Liu (16555341), Pin Gao (778068), Toshiaki Tsunogae (3944198), Sung Won Kim (445663), M. Santosh (537032), Cheng-Xue Yang (16555338), M. Nakagawa (12865322), Yunpeng Dong (4047781)   +7 more
core   +1 more source

Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals)

Известия высших учебных заведений: Геология и разведка, 2019
In the West of the aHochthon of Magnitogorsk zone thrusted onto the Precambrian complexes of the Uraltau zone, the Devonian island-arc complexes overlap stratigraphicalry the Ordovician and Silurian chert-basalt sequences and serpentine melange.
A. V. Ryazantsev, L. A. Novikov, A. A. Razumovskij   +2 more
doaj   +1 more source

Gold-arsenic sulfide mineralization of the Kayancha area, Gorny Altai

Руды и металлы, 2023
Gold-arsenic sulfide type mineralization has first been revealed for the Gorny Altai region. The mineralized zones associate with lamprophyre dikes and are controlled by steeply dipping faults transecting the Vendian-Cambrian terrigenous-carbonate ...
Kryazhev S. G., Dvurechenskaya S. S., Okulov A. V., Fedak S. I.   +3 more
doaj   +1 more source

Batholith recorded mesozoic multistage tectonic evolution of the South china block: A case study of the guandimiao intrusions

Frontiers in Earth Science, 2022
South China is a well-known grand felsic igneous rocks province. However, it is still controversial and not well understood whether the Mesozoic tectono-magmatic pattern is dominated by the subduction of the paleo-Pacific oceanic plate. In this study, we
Jin-Hua Qin, Fan Huang, Deng-Hong Wang
doaj   +1 more source

The composite Sierra Bermeja Pluton (southern Iberian Massif): science, heritage and geoconservation

Journal of Maps, 2019
The Sierra Bermeja Pluton (∼60 km2 surface area) exemplifies a type of controversial granites of the Iberian Massif (European Variscan Belt), the cordierite-bearing ‘Serie Mixta’ (mixed series) monzogranites.
Jon Errandonea-Martin, Fernando Sarrionandia, Josu Junguitu, Manuel Carracedo-Sánchez, Luis Eguíluz, José Ignacio Gil Ibarguchi   +5 more
doaj   +1 more source

GEOCHEMICAL AND PETROLOGICAL STUDIES OF A CARBONATISED METALAMPROPHYRE AT KALAGALLA - EVIDENCE FOR SHOSHONITIC CALC-ALKALINE MAGMATISM WITHIN AURIFEROUS RAMAGIRI-PENAKACHERLA SCHIST BELT (2.5 Ga), EASTERN DHARWAR CRATON, SOUTHERN INDIA

Geochimica Brasiliensis, 2020
Geochemical and petrological characteristics of a lamprophyre dyke at Kalagalla intruded into the auriferous schistose rocks of the Ramagiri-Penakacherla Schist Belt, Anantapur district, Andhra Pradesh, India are presented here. The Kalagalla lamprophyre
Rameshchandra Phani Pothuri, Raúl Lira, María José Espeche, Ananda Reddy Rokalla   +3 more
doaj   +1 more source

Fluid Inclusion and Sulfur Isotope Study on the Donggualin Gold Deposit in the Ailaoshan Gold Belt

Yankuang ceshi, 2017
Fluid inclusions and sulfur isotopes can reveal the characteristics of ore-forming fluid and the origin of ore-forming materials, which are important indicators for ore genesis.
ZHOU Xiang-ke, WANG Jian-guo, LIU Yin-chun, LI Guang-jing, LEI Heng-yong, MAO Bing   +5 more
doaj   +1 more source

Western flanks of the Central Asian late paleozoic continental rift system and uranium mineralization

Известия высших учебных заведений: Геология и разведка, 2022
Introduction. Available information on the occurrences of high alkaline magmatic rocks fixing the position of the western flanks of the southern branches (Gobi Altai and Gobi Tien-Shan) of the Central Asian Late Paleozoic continental rift system in the ...
S. A. Malyutin
doaj   +1 more source

Variscan lamprophyres of the South Armorican Domain and comparison with lamprophyres of the Western European Variscan belt

Mineralogy and Petrology, 2022
Late to post-orogenic lamprophyres of the European Variscides attest variable compositions of the mantle beneath the structural zones of the belt. These compositions resulted from different contributions of mantle components involving geotectonic processes during the orogeny, such as oceanic subduction of mafic crust and sediments, continental ...
Pouclet, André, Bardintzeff, Jacques-Marie, Bellon, Hervé   +2 more
openaire   +4 more sources