Results 141 to 150 of about 1,650 (203)

Lateral change of sources for the Cretaceous-Paleogene magmatism of the Tian Shan

Petrology, 2015
The Southern and Northern-Central Tian Shan are sharply different in the character of the evolution of Cretaceous-Paleogene magmatism. The Southern Tian Shan comprises a picrobasalt-trachybasalt-basanite-phonotephrite-phonolite volcanic series, which was formed over a considerable time interval from 122 to 46 Ma, whereas the Northern-Central Tian Shan ...
Rasskazov, Sergei V., Chuvashova, Irina S., Mikolaichuk, Alexander V., Sobel, Edward (Prof. Dr.), Yasnygina, Tatiana A., Fefelov, N. N., Saranina, Elena V.   +6 more
openaire   +1 more source

Mid-Cretaceous extension-related magmatism in the eastern Colombian Andes

Journal of South American Earth Sciences, 2005
Abstract Cretaceous magmatism in the Eastern Cordillera of Colombia is related to lithospheric stretching during the late Early–early Late Cretaceous. The small amount of preserved igneous material is represented by small mafic intrusions. This study focuses on three localities, from east to west: Pajarito, Pacho, and Caceres.
Vasquez, M, Altenberger, Uwe (Dr.)
openaire   +2 more sources

Jurassic-Cretaceous magmatic associations of the northeastern part of the Lesser Caucasus

International Geology Review, 1979
(1979). Jurassic-Cretaceous magmatic associations of the northeastern part of the Lesser Caucasus. International Geology Review: Vol. 21, No. 11, pp. 1345-1355.
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Cretaceous magmatic migration and flare-up in Pamir–Karakoram

Lithos, 2023
Xin Ma, Wei Dan, Jian Wang, Qiang Wang, Guo-Rong Tang, Mustafo Gadoev, Ilhomjon Oimahmadov, Gong-Jian Tang   +7 more
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A missing Cretaceous magmatic arc of Neo-Tethys in Iran

Magmatic arcs are generally considered to be the direct record of subduction zone. Magmatic activity can start with subduction initiation until the end of oceanic subduction. In the Neo-Tethys tectonic domain, arc magma gaps in Alps and Iran prove that arc magmatism and oceanic subduction are not always coupled.Unlike the Alps, where arc magmatism is ...
Yiyang Lei, Yang Chu, Bo Wan, Wei Lin, Ling Chen, Guangyao Xin, Morteza Talebian   +6 more
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Mid-cretaceous extensional magmatism in the Alborz Mountains, north Iran

2023
In the Gasht-Masuleh area in the Alborz Mountains, gabbroic magma intruded Palaeozoic metasediments and Mesozoic sediments and crystallised as isotropic and cumulate gabbros. LREE enrichment points to relatively low degrees of mantle melting and depletion of Ti, Nb and Ta relative to primitive mantle points to an arc related component in the magma ...
Rezaei, Leila (Dr.), Timmerman, Martin Jan (Dr.), Moazzen, Mohssen, Altenberger, Uwe (Dr.), Sláma, Jiří, Sudo, Masafumi (Dr.), Günter, Christina (Dr.), Wilke, Franziska Daniela Helena (Dr.), Schleicher, Anja M. (Dr.rer.nat.)   +8 more
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Possible manifestations of slab window magmatisms in Cretaceous southwest Japan

Tectonophysics, 2002
Abstract The slab window system related to ridge subduction is studied to explain the conspicuous activity and the along-arc migration of the magmatisms in the eastern margin of Eurasian continent in the late Mesozoic. The trend of the granite ages is scrutinized with systems approach and analyzed by the statistical method in Cretaceous southwest ...
openaire   +1 more source

MID-CRETACEOUS DEFORMATION IN THE MAGMATIC ARC OF NORTHWESTERN NEVADA

Geological Society of America Abstracts with Programs, 2021
Sarah Trevino, Basil Tikoff
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The Jurassic-Cretaceous Magmatic Complexes of the Eastern High Atlas, Morocco

Located in the eastern part of the High Atlas Mountains, the Upper Jurassic-Lower Cretaceous magmatic complexes intrude predominantly along the thick Mesozoic sedimentary anticlinal ridge and within the Mouguer-El’Bour Paleozoic inlier. They are range in composition from mafic to felsic, including gabbro, diorite, and syenite.
CHAFIK, NASSIRA, KARAOUI, BRAHIM, ALLOUBAN, Mustapha, GEVORGYAN, Hripsime, YAJIOUI, Zakaria   +4 more
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Cretaceous deformation, magmatism, and metamorphism in the Lower Benue Trough, Nigeria

Geological Journal, 1987
A microtectonic analysis carried out in the Abakaliki Anticlinorium has revealed various types of deformation of different ages. Early soft-sediment deformation (normal faulting, slumping) occurred during the Albian–Pre-Santonian period and is related to active N50°E trending shear zones.
openaire   +1 more source