Role of the subducted slab, mantle wedge and continental crust in the generation of adakites from the Andean Austral Volcanic Zone

@article{Stern1996RoleOT,
  title={Role of the subducted slab, mantle wedge and continental crust in the generation of adakites from the Andean Austral Volcanic Zone},
  author={Charles R. Stern and Rolf Kilian},
  journal={Contributions to Mineralogy and Petrology},
  year={1996},
  volume={123},
  pages={263-281}
}
  • C. SternR. Kilian
  • Published 15 April 1996
  • Geology
  • Contributions to Mineralogy and Petrology
Abstract All six Holocene volcanic centers of the Andean Austral Volcanic Zone (AVZ; 49–54°S) have erupted exclusively adakitic andesites and dacites characterized by low Yb and Y concentrations and high Sr/Y ratios, suggesting a source with residual garnet, amphibole and pyroxene, but little or no olivine and plagioclase. Melting of mafic lower crust may be the source for adakites in some arcs, but such a source is inconsistent with the high Mg# of AVZ adakites. Also, the AVZ occurs in a… 

Slab melting and slab melt metasomatism in the Northern Andean Volcanic Zone : adakites and high-Mg andesites from Pichincha volcano (Ecuador)

Situated in the fore-arc of the Northern Volcanic Zone (NVZ) of the Andes in Ecuador, Pichincha volcano is an active edifice where have been erupted unusual magmas as adakites and high-Mg andesites.

Petrology and Geochemistry of Adakitic Dacites and High-MgO Andesites, and Related Calc-alkaline Dacites from the Miocene Okoppe Volcanic Field, N Hokkaido, Japan

In the Okoppe area of North Hokkaido, Japan, the eruption of adakitic and calc-alkaline dacites was followed by high-Mg andesite (HMA) and calc-alkaline dacite during the Middle Miocene (12–10 Ma).

Petrological and geochemical constraints on the origin of adakites in the Garibaldi Volcanic Complex, southwestern British Columbia, Canada

The Garibaldi Volcanic Complex (GVC) is located in southwestern British Columbia and comprises two related but distinct volcanic fields: the Garibaldi Lake and the Mount Garibaldi volcanic fields.

Geochemical modelling of early Eocene adakitic magmatism in the Eastern Pontides, NE Anatolia: continental crust or subducted oceanic slab origin?

Early Eocene adakitic volcanic and granitoid rocks are widespread in the Eastern Pontides of NE Turkey, providing significant constraints for the early Cenozoic tectonomagmatic evolution of the

Constraints on the interaction between slab melts and the mantle wedge from adakitic glass in peridotite xenoliths

Peridotite xenoliths from the Quaternary Cerro del Fraile basalts, southernmost South America, sample the mantle less than 25 km east of the Andean Austral Volcanic Zone (AVZ), an arc segment
...

References

SHOWING 1-10 OF 65 REFERENCES

Magnesian andesite in the western Aleutian Komandorsky region: Implications for slab melting and processes in the mantle wedge

The role of the subducting lithospheric slab in the genesis of mantle-derived (primitive) magmas is investigated through a study of volcanic rocks formed in the tectonically strike-slip–dominated

Derivation of some modern arc magmas by melting of young subducted lithosphere

MOST volcanic rocks in modern island and continental arcs are probably derived from melting of the mantle wedge, induced by hydrous fluids released during dehydration reactions in the subducted

Isotope and Trace Element Data for Orogenic Andesites from the Austral Andes

The Austral Volcanic Zone of the Andes (AVZ, 49–55°S) consists of six Pleistocene to Recent volcanic centres resulting from the subduction of the Antarctic plate beneath southernmost South America.

Mount St. Helens: Potential example of the partial melting of the subducted lithosphere in a volcanic arc

Mount St. Helens, 50 km to the west of Mount Adams and the main Cascade volcanic chain, is only 80 km above the subducting oceanic lithosphere. The elevated temperatures off the subducting slab,

Volcanic Arc Magmas: Implications of a Melting-Mixing Model for Element Recycling in the Crust-Upper Mantle System

  • R. Kay
  • Geology
    The Journal of Geology
  • 1980
A multicomponent melting-mixing model for the origin of volcanic arc basalt magmas implies signifi cant recycling of K, Rb, Ba, and other elements in the crust-upper mantel system. The model accounts

Isotopic composition of Late Jurassic and Early Cretaceous mafic igneous rocks from the southernmost Andes: impllcations for Sub-Andean mantle

ABSTRACT. A basaltic dike and minerals within a gabbro from the ophiolitic Tortuga Complex, a portion of the mafic floor of the Late Jurassic Rocas Verdes back-arc basin in southernmost South

Partial melting of subducted oceanic crust and isolation of its residual eclogitic lithology

  • W. McDonough
  • Geology
    Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences
  • 1991
Oceanic lithosphere is produced at mid-ocean ridges and reinjected into the mantle at convergent plate boundaries. During subduction, this lithosphere goes through a series of progressive dehydration

Petrochemistry and recrystallization history of granulite xenoliths from the Pali-Aike volcanic field, Chile

Mafic granulite facies xenoliths found in the Pleistocene-Recent alkali basalts of southern Patagonia, South America, have an unfoliated granoblastic matrix with the mineral assemblage clinopyroxene
...