Adakite - Wikipedia
Adakites are volcanic rocks of intermediate to felsic composition that have geochemical characteristics of magma originally thought to have formed by partial melting of altered basalt that is subducted below volcanic arcs. [2] .
Adakite - an overview | ScienceDirect Topics
Adakites are rare extrusive and intrusive igneous rocks that are silicic and sodium-rich. They were originally associated with the subduction of young oceanic lithosphere (≤ 25 Ma); however, they are now also commonly identified in non-subduction zone settings.
Adakite petrogenesis - ScienceDirect
2012年3月1日 · Adakite was originally proposed as a genetic term to define intermediate to high-silica, high Sr/Y and La/Yb volcanic and plutonic rocks derived from melting of the basaltic portion of oceanic crust subducted beneath volcanic arcs.
Examination of an extensive adakite geochemical database identifies two distinct compositional groups. One consists of high-SiO2 adakites (HSA) which is considered to represent subducted basaltic slab-melts that have reacted with peridotite during ascent through mantle wedge.
An overview of adakite petrogenesis | Science Bulletin - Springer
The term adakite was originally proposed to define silica-rich, high Sr/Y and La/Yb volcanic and plutonic rocks derived from melting of the basaltic portion of oceanic crust subducted beneath volcanic arcs.
The origin of adakites - Natural History Museum
Adakites are silica-rich rocks characterised by high strontium-yttrium ratios and low yttrium and ytterbium content. The origin of adakites is unclear, with opinion divided between two main hypotheses:
An overview on the origin of adakites/adakitic rocks and related ...
2020年9月1日 · Adakites in the Philippine Archipelago (not only restrict to Cu-Au mineralization associated porphyries) have been studied for more than two decades, and several models have been proposed for their geneses, including (1) partial melting of subducted oceanic crust follow the subduction of aseismic ridges or seamount chains (Hollings et al., 2011a...
(PDF) A review of research on adakites
2019年12月23日 · Using an adakite database compiled from published articles, 979 samples termed as adakites in the database were screened using a number of geochemical definitions, and 356 fully conforming...
The Composition, Petrogenesis, and Geodynamic Setting of Adakite ...
The adakites are compared with Precambrian tonalite-trondhjemite-granodiorite (TTG) series showing similarities and differences. Various petrogenetic models of Adakite Magmatism and relevant geodynamic settings are reviewed.
[PDF] An overview of adakite petrogenesis | Semantic Scholar
2006年2月15日 · Adakites are Y- and Yb-depleted, SiO2- and Sr-enriched rocks with elevated Sr/Y and La/Yb ratios originally thought to represent partial melts of subducted metabasalt, based on their association with… ...