Role of strain localization and melt flow on exhumation of deeply subducted continental crust
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F18%3A00000134" target="_blank" >RIV/00025798:_____/18:00000134 - isvavai.cz</a>
Alternative codes found
RIV/67985530:_____/18:00494976 RIV/00216208:11310/18:10380149
Result on the web
<a href="https://pubs.geoscienceworld.org/gsa/lithosphere/article/10/2/217/525852/Role-of-strain-localization-and-melt-flow-on" target="_blank" >https://pubs.geoscienceworld.org/gsa/lithosphere/article/10/2/217/525852/Role-of-strain-localization-and-melt-flow-on</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1130/L666.1" target="_blank" >10.1130/L666.1</a>
Alternative languages
Result language
angličtina
Original language name
Role of strain localization and melt flow on exhumation of deeply subducted continental crust
Original language description
A section of anatectic felsic rocks from a high-pressure (> 13 kbar) continental crust (Variscan Bohemian Massif) preserves unique evidence for coupled melt flow and heterogeneous deformation during continental subduction. the section reveals layers of migmatitic granofels interlayered with anatectic banded orthogneiss and other rock types within a single deformation fabric related to the prograde metamorphism. Granofels layers represent high strain zones and have traces of localized porous melt flow that infiltrated the host banded orthogneiss and crystallized granitic melt in the grain interstices. This process is inferred from: (1) gradational contacts between orthogneiss and granofels layers; (2) grain size decrease and crystallographic preferred orientation of major phases, compatible with oriented growth of crystals from interstitial melt during granular flow, accommodated by melt-assisted grain boundary diffusion creep mechanisms; and (3) pressuretemperature equilibria modeling showing that the melts were not generated in situ. We further argue that this porous melt flow, focused along the deformation layering, significantly decreases the strength of the crustal section of the subducting continental lithosphere. As a result, detachment folds develop that decouple the shallower parts of the layered anatectic sequence from the underlying and continuously subducting continental plate, which triggers exhumation of this anatectic sequence.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10505 - Geology
Result continuities
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)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Lithosphere
ISSN
1941-8264
e-ISSN
—
Volume of the periodical
10
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
22
Pages from-to
217-238
UT code for WoS article
000433166500003
EID of the result in the Scopus database
2-s2.0-85044764112