Results 101 to 110 of about 806 (206)

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

open access: yes
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   +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]

open access: yesSci Rep, 2022
Sano T   +10 more
europepmc   +1 more source

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

open access: yesBoletín 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   +1 more
doaj   +1 more source

Les adakites d'Equateur : modèle préliminaire

open access: yes, 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   +6 more
openaire   +1 more source

Adakite-like and Normal Arc Magmas: Distinct Fractionation Paths in the East Serbian Segment of the Balkan-Carpathian Arc [PDF]

open access: yes, 2017
New age and whole-rock 87Sr/86Sr and 143Nd/144Nd isotopic data are used to assess petrogenetic and regional geodynamic processes associated with Late Cretaceous subvolcanic intrusions within the sparsely studied Timok Magmatic Complex (TMC) and Ridanj ...
Peytcheva, I.   +5 more
core  

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

open access: yes, 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   +3 more
core  

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

open access: yes, 2012
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.
Eklund, O.   +4 more
core  

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

open access: yesNat Commun, 2021
Antonelli MA   +5 more
europepmc   +1 more source

Adakites from Ecuador : preliminary data

open access: yes, 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   +5 more
openaire   +1 more source

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