Dynamics of Saxothuringian subduction channel/wedge constrained by phase equilibria modelling and micro-fabric analysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F17%3A00464267" target="_blank" >RIV/67985530:_____/17:00464267 - isvavai.cz</a>
Alternative codes found
RIV/00025798:_____/17:00000023
Result on the web
<a href="http://dx.doi.org/10.1111/jmg.12226" target="_blank" >http://dx.doi.org/10.1111/jmg.12226</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jmg.12226" target="_blank" >10.1111/jmg.12226</a>
Alternative languages
Result language
angličtina
Original language name
Dynamics of Saxothuringian subduction channel/wedge constrained by phase equilibria modelling and micro-fabric analysis
Original language description
Subduction and exhumation dynamics can be investigated through analysis of metamorphic and deformational evolution of associated high-grade rocks. The Erzgebirge anticline, which forms at the boundary between the Saxothuringian and Tepla-Barrandian domains of the Bohemian Massif, provides a useful study area for these processes owing to the occurrence of numerous meta-basites preserving eclogite facies assemblages, and coesite and diamond bearing quartzofeldspathic lithologies indicating subduction to deep mantle depths. The prograde and retrograde evolution of meta-basite from the Czech portion of the Erzgebirge anticline has been constrained through a combination of thermodynamic modelling and conventional thermobarometry. Garnet growth zoning indicates that the rocks underwent burial and heating to peak conditions of 2.6 GPa and at least 615 degrees C. Initial exhumation occurred with concurrent cooling and decompression resulting in the growth of amphibole and zoisite poikiloblasts overgrowing and including the eclogite facies assemblage. The development of clinopyroxene-plagioclase-amphibole symplectites after omphacite and Al-rich rims on matrix amphibole indicate later heating at the base of the lower crust. Omphacite microstructures, in particular grain size analysis and lattice-preferred orientations, indicate that the prograde evolution was characterized by a constrictional strain geometry transitioning into plane strain and oblate fabrics during exhumation. The initial constrictional strain pattern is interpreted as being controlled by competing slab pull and crustal buoyancy forces leading to necking of the subducting slab. The transition to plane strain and flattening geometries represents transfer of material from the subducting lithosphere into a subduction channel, break-off of the dense slab and rebound of the buoyant crustal material.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Metamorphic Geology
ISSN
0263-4929
e-ISSN
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Volume of the periodical
35
Issue of the periodical within the volume
3
Country of publishing house
GB - UNITED KINGDOM
Number of pages
28
Pages from-to
253-280
UT code for WoS article
000396743100001
EID of the result in the Scopus database
2-s2.0-85006057012