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.
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 ] .
(PDF) A review of research on adakites
2019年12月23日 · By comparing and analysing the characteristics of the reference adakite samples, we recognize that: (1) the screened reference adakites have enlightened the origin of anomalous samples; (2) the...
Discrimination diagrams of adakite. a Sr/Y versus Y (Defant and ...
In terms of geochemistry, ore-causative granitoids in the orefield exhibit adakite-like or adakite-normal arc transitional signatures, but those forming the porphyry-/epithermal-type Cu-Mo-Au...
An overview on the origin of adakites/adakitic rocks and related ...
2020年9月1日 · In this paper, Cenozoic magmatic events and geological characteristics of typical porphyry and epithermal Cu-Au deposits in Northern Luzon have been overviewed and briefly summarized.
(A) Diagram for adakite/TTG discrimination (Martin, 1986). (B ...
Here we use sulfur K-edge micro X-ray absorption near-edge structure spectroscopy to measure the relative abundances of S⁶⁺, S⁴⁺ and S²⁻ state in apatite inclusions hosted in...
An overview of adakite, tonalite–trondhjemite–granodiorite (TTG), …
2005年1月1日 · Examination of an extensive adakite geochemical database identifies two distinct compositional groups. One consists of high-SiO 2 adakites (HSA) which is considered to represent subducted basaltic slab-melts that have reacted …
A review of research on adakites - Taylor & Francis Online
2019年12月23日 · By comparing and analysing the characteristics of the reference adakite samples, we recognize that: (1) the screened reference adakites have enlightened the origin of anomalous samples; (2) the domain range of the reference adakites in compositional diagrams mainly supports the hypothesis that high-SiO 2 adakites are consistent with the ...
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.
Global distribution of the reference adakites (n = 356). Many …
Figure 5 shows the global distribution of the reference adakites. Of the 356 samples, 252 are Cenozoic in age, 44 are Mesozoic, 12 are Palaeozoic, 39 are Archaean, and 9 samples have not been...
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