Mid-crustal shear zone formation in granitic rocks: Constraints from quantitative textural and crystallographic preferred orientations analyses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10218414" target="_blank" >RIV/00216208:11310/14:10218414 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00025798:_____/14:00000086

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.tecto.2013.11.032" target="_blank" >http://dx.doi.org/10.1016/j.tecto.2013.11.032</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tecto.2013.11.032" target="_blank" >10.1016/j.tecto.2013.11.032</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mid-crustal shear zone formation in granitic rocks: Constraints from quantitative textural and crystallographic preferred orientations analyses

Popis výsledku v původním jazyce

This paper presents quantitative microstructural and crystallographic preferred orientation (CPO) analyses of an Alpine amphibolite facies shear zone developed in the Fibbia metagranite (Gotthard massif, Central Alps). The weakly deformed metagranite andorthogneiss at the margins of the shear zone are characterized by a bulk strain partitioning between harder coarse-grained monomineralic aggregates, derived from quartz and K-feldspar porphyroclasts, and softer fine-grained plagioclase-bearing shear bands. A characteristic feature is a dilatant fracturing of strong quartz and feldspar aggregates. CPOs and microtextures suggest that quartz and K-feldspar aggregates are dynamically recrystallized via dislocation creep while plagioclases show evidences offluid-assisted diffusive mass transfer and grain boundary sliding. In the mylonite and ultramylonite shear zone core, the porphyroclastsderived quartz and K-feldspar layers are broken-down to produce a polyphased matrix that is character

Název v anglickém jazyce

Mid-crustal shear zone formation in granitic rocks: Constraints from quantitative textural and crystallographic preferred orientations analyses

Popis výsledku anglicky

This paper presents quantitative microstructural and crystallographic preferred orientation (CPO) analyses of an Alpine amphibolite facies shear zone developed in the Fibbia metagranite (Gotthard massif, Central Alps). The weakly deformed metagranite andorthogneiss at the margins of the shear zone are characterized by a bulk strain partitioning between harder coarse-grained monomineralic aggregates, derived from quartz and K-feldspar porphyroclasts, and softer fine-grained plagioclase-bearing shear bands. A characteristic feature is a dilatant fracturing of strong quartz and feldspar aggregates. CPOs and microtextures suggest that quartz and K-feldspar aggregates are dynamically recrystallized via dislocation creep while plagioclases show evidences offluid-assisted diffusive mass transfer and grain boundary sliding. In the mylonite and ultramylonite shear zone core, the porphyroclastsderived quartz and K-feldspar layers are broken-down to produce a polyphased matrix that is character

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

<a href="/cs/project/LK11202" target="_blank" >LK11202: Role paleozoických akrečních a kolizních orogénů na tvorbu a růst kontinentální kůry</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Tectonophysics

ISSN

0040-1951

e-ISSN

—

Svazek periodika

612-613

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

18

Strana od-do

63-80

Kód UT WoS článku

000331157300006

EID výsledku v databázi Scopus

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