Results 101 to 110 of about 672 (207)

Adakite-like volcanism of Ecuador: lower crust magmatic evolution and recycling

, 2009
In the Northern Andes of Ecuador, a broad Quaternary volcanic arc with significant across-arc geo- chemical changes sits upon continental crust consisting of accreted oceanic and continental terranes. Quaternary volcanic centers occur, from west to east,
Othmar Müntener, Beate, B., Massimo Chiaradia, Fontignie, D., Fontignie, Denis André, Bernardo Beate, Denis Fontignie, Muntener, O., Beate, Bernardo, Chiaradia, Massimo, Chiaradia, M., Muntener, Othmar   +11 more
core   +1 more source

Palaeoproterozoic adakite- and TTG-like magmatism in the Svecofennian orogen, SW Finland

Geologica Acta, 2013
The Palaeoproterozoic Svecofennian orogen in the Fennoscandian shield is an arc accretionary orogen that was formed at c. 1.92-1.86Ga. Arc accretion, magmatism and the subsequent continent-continent collision thickened the crust up to c.
M. VÄISÄNEN, Å. JOHANSSON, U.B. ANDERSSON, O. EKLUND, P. HÖLTTÄ   +4 more
doaj  

Progressive Build-Up of a Transcrustal System beneath an Adakite-Like Volcanic Complex (Chachimbiro, Ecuador): An Example of an Embryonic Porphyry Cu System

Arc magmas display global trends of increasing adakite-like indices (e.g. Sr/Y, La/Yb) with increasing crustal thickness, which are interpreted as the result of an increasingly deeper evolution of the magmas in a thick crust. Several volcanic edifices in
Ulyanov, A, Bellver Baca, Maria Teresa, Chiaradia, Massimo   +2 more
core   +1 more source

Petrogenesis of isotopically enriched Quaternary magma with adakitic affinity associated with subduction of old lithosphere beneath central Myanmar. [PDF]

Sci Rep, 2022
Sano T, Tani K, Yoneda S, Min H, Htike T, Maung Thein ZM, Ishizuka O, Kusuhashi N, Kono RT, Takai M, Conway CE.   +10 more
europepmc   +1 more source

Les adakites d'Equateur : modèle préliminaire

, 1997
L'ensemble des roches de 12 volcans quaternaires des Andes équatoriennes (286 analyses nouvelles) présente une signature adakitique, plus ou moins forte selon les appareils. Cette signature proviendrait de la fusion partielle de matériaux basaltiques métamorphisés de la croûte continentale (MORB et/ou basaltes d'arc) sous l'action des remontées ...
/Monzier, Michel, /Robin, Claude, Hall, M.L., Cotten, J., Mothes, P., /Eissen, Jean-Philippe, Samaniego, P.   +6 more
openaire   +1 more source

Magmatic Evolution of the Panales Caldera: Chemo- mineralogical characterization of the El Torito Dome, Mexico

Boletín Geológico
The aim of the present work is to determine the petrogenetic significance of a dacitic dome in central Mexico, and to establish the correlation with the geological evolution of the eastern sector of the Trans Mexican Volcanic Belt, which traverses the ...
Luis Enrique Ortiz-Hernández, Jose Cruz Escamilla-Casas   +1 more
doaj   +1 more source

Adakite-like volcanism of Ecuador: lower crust magmatic evolution and recycling [PDF]

, 2018
In the Northern Andes of Ecuador, a broad Quaternary volcanic arc with significant across-arc geochemical changes sits upon continental crust consisting of accreted oceanic and continental terranes.
Fontignie, Denis, Müntener, Othmar, Beate, Bernardo, Chiaradia, Massimo   +3 more
core  

Mariana-type ophiolites constrain the establishment of modern plate tectonic regime during Gondwana assembly. [PDF]

Nat Commun, 2021
Yao J, Cawood PA, Zhao G, Han Y, Xia X, Liu Q, Wang P.   +6 more
europepmc   +1 more source

Calcium isotope evidence for early Archaean carbonates and subduction of oceanic crust. [PDF]

Nat Commun, 2021
Antonelli MA, Kendrick J, Yakymchuk C, Guitreau M, Mittal T, Moynier F.   +5 more
europepmc   +1 more source

Adakites from Ecuador : preliminary data

, 1996
Les premiers résultats du programme de volcanologie mené en Equateur par l'ORSTOM et l'Institut Géophysique de l'Ecole Polytechnique Nationale (Quito) montrent une forte proportion d'adakites parmi les roches échantillonnées sur les volcans quaternaires. Ces roches résultent de la fusion partielle d'une source basaltique.
Monzier, Michel, Eissen, Jean-Philippe, Cotten, J., Hall, M.L., Robin, Claude, Samaniego, P.   +5 more
openaire   +1 more source