Results 61 to 70 of about 32,456 (106)

From Cadomian magmatic arc to Rheic ocean closure: The geochronological-geochemical record of nappe protoliths of the Münchberg Massif, NE Bavaria (Germany)

, 2018
Nikola Koglin, A. Zeh, G. Franz, U. Schüssler, J. Glodny, A. Gerdes, H. Brätz   +6 more
semanticscholar   +1 more source

Late Cadomian and late Variscan granitoid magmatism in the southern Calabria-Peloritani Orogen (southern Italy)

, 2012
FIANNACCA, PATRIZIA, William I. S, CIRRINCIONE, ROSOLINO, PEZZINO, Antonino   +3 more
openaire   +1 more source

Age and nature of 560–520 Ma calc-alkaline granitoids of Biarjmand, northeast Iran: insights into Cadomian arc magmatism in northern Gondwana

International Geology Review, 2016
ABSTRACTThe Biarjmand granitoids and granitic gneisses in northeast Iran are part of the Torud–Biarjmand metamorphic complex, where previous zircon U–Pb geochronology show ages of ca. 554–530 Ma for orthogneissic rocks. Our new U–Pb zircon ages confirm a Cadomian age and show that the granitic gneiss is ~30 million years older (561.3 ± 4.7 Ma) than ...
Xian-Hua Li, Robert J Stern, JOSÉ FRANCISCO Santos   +2 more
exaly   +6 more sources

Cadomian (Ediacaran–Cambrian) arc magmatism in the Bitlis Massif, SE Turkey: Magmatism along the developing northern margin of Gondwana

Tectonophysics, 2009
Abstract Small granitic plutons and associated granitic dykes that intrude the pre-Devonian basement of the Bitlis Massif were previously inferred to have a broadly Late Palaeozoic crystallisation age related to the Hercynian orogeny; this was tested during this work.
Timur Ustaömer, Alan S Collins, Alastair H F Robertson   +2 more
exaly   +8 more sources

Cadomian (Ediacaran–Cambrian) arc magmatism in the ChahJam–Biarjmand metamorphic complex (Iran): Magmatism along the northern active margin of Gondwana

Gondwana Research, 2015
Abstract The ChahJam–Biarjmand complex (CJBC), flanked by the Alborz Mountains in the north and the Lut–Tabas block to the south, is part of Central Iranian block, where the oldest continental crust of Iran is found. This complex contains granitic to tonalitic orthogneissic rocks (old plutons) and associated metasediments, amphibolites and ...
Hadi Shafaii Moghadam, Zhaochu Hu, Robert J Stern   +2 more
exaly   +5 more sources

Origin and evolution of Cadomian magmatism in SW Iberia: from subduction onset and arc building to a tectonic switching

International Geology Review, 2023
The work was supported by the Ministerio de Ciencia, Innovación y Universidades Ministerio de Ciencia, Innovación y Universidades [PID2021-122467NB-C22]; Ministerio de Ciencia, Innovación y Universidades [PID2021-125585NB-I00].
Esther Rojo-Pérez, José M Fuenlabrada, Rubén Díez Fernández, Ricardo Arenas   +3 more
semanticscholar   +4 more sources

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Cadomian magmatism in the North Armorican Massif

Geological Society Special Publication, 1990
Abstract This review concerns intrusive magmatism related to the Cadomian orogeny in the northeastern part of the Armorican Massif of France. The Cadomian orogeny is interpreted to represent tectono-thermal activity in a continental margin above a subduction zone. The North Armorican Shear Zone (NASZ) separates two major Cadomian
G M Power, R S D'Lemos
exaly   +3 more sources

Cadomian Magmatic Rocks from Zarand (SE Iran) Formed in a Retro-Arc Basin

Lithos, 2020
Abstract A major arc-related magmatic episode is recorded in the Ediacaran-Early Cambrian (Cadomian) crust of Iran and Anatolia due to the southward subduction of Prototethyan oceanic lithosphere beneath N Gondwana. This magmatism was generated at a convergent margin, fragments of which can be traced for thousands of kilometres, from west Avalonia to
Fatemeh Sepidbar, Hadi Shafaii Moghadam, Congying Li, Robert J. Stern, Peng Jiantang, Yusef Vesali   +5 more
semanticscholar   +4 more sources

Short Paper: Cadomian terrane tectonics and magmatism in the Armorican Massif

Journal of the Geological Society, 1989
The North Armorican composite terrane, NW France, is a collage of displaced terranes which result from the amalgamation of Cadomian continental arcs and marginal basin complexes by sinistral transpression along a continental margin above a subduction zone. Early Cadomian arc activity occurred at c.
Peter J Treloar, Richard S D'Lemos
exaly   +3 more sources

Geochronology and geochemistry of rhyolites from Hormuz Island, southern Iran: A new record of Cadomian arc magmatism in the Hormuz Formation

Lithos, 2015
Hormuz Island, a salt-gypsum dome in the Persian Gulf in southern Iran, is a complex halotectonic melange comprising evaporites, carbonates, volcanic and volcaniclastic rocks, as well as low-grade metamorphic and sedimentary rocks. Based on trace element (including rare earth elements REE) compositions of whole rocks and zircon, Hormuz rhyolites are ...
Jamshid Hassanzadeh, Kevin D Mckeegan
exaly   +4 more sources