Anatexis of accretionary wedge, Pacific type magmatism and formation of vertically stratified continental crust in the Altai Orogenic Belt

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F16%3A00000156" target="_blank" >RIV/00025798:_____/16:00000156 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/16:10358990

Result on the web

<a href="http://onlinelibrary.wiley.com/doi/10.1002/2016TC004271/abstract" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/2016TC004271/abstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/2016TC004271" target="_blank" >10.1002/2016TC004271</a>

Result language

angličtina

Original language name

Anatexis of accretionary wedge, Pacific type magmatism and formation of vertically stratified continental crust in the Altai Orogenic Belt

Original language description

Granitoid magmatism and its role in differentiation and stabilization of the Paleozoic accretionary wedge in the Chinese Altai are evaluated in this study. Voluminous Silurian–Devonian granitoids intruded a greywacke-dominated Ordovician sedimentary succession (the Habahe Group) of the accretionary wedge. The close temporal and spatial relationship between the regional anatexis and the formation of granitoids, as well as their geochemical similarities including rather un-evolved Nd isotopic signatures and the strong enrichment of Large Ion Lithophile Elements (LILE) relative to many of the High Field Strength Elements (HFSE), may indicate that the granitoids are product of partial melting of the accretionary wedge rocks. Whole-rock geochemistry and pseudosection modeling show that regional anatexis of fertile sediments could have produced a large amount of melts compositionally similar to the granitoids. Such process could have left a high-density garnet- and/or garnet–pyroxene granulite residue in the deep crust, which can be the major reason for the gravity high over the Chinese Altai. Our results show that melting and crustal differentiation can transform accretionary wedge sediments into vertically stratified and stable continental crust. This may be a key mechanism contributing to the peripheral continental growth worldwide.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Tectonics

ISSN

0278-7407

e-ISSN

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Volume of the periodical

35

Issue of the periodical within the volume

12

Country of publishing house

US - UNITED STATES

Number of pages

23

Pages from-to

3095-3118

UT code for WoS article

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EID of the result in the Scopus database

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