Petrogenesis of Miocene subvolcanic rocks in the Western Outer Carpathians (southeastern Moravia, Czech Republic)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000072" target="_blank" >RIV/00025798:_____/19:00000072 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/19:00113710 RIV/61989592:15310/19:73597176
Result on the web
<a href="http://www.jgeosci.org/detail/jgeosci.286/abstract/" target="_blank" >http://www.jgeosci.org/detail/jgeosci.286/abstract/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3190/jgeosci.286" target="_blank" >10.3190/jgeosci.286</a>
Alternative languages
Result language
angličtina
Original language name
Petrogenesis of Miocene subvolcanic rocks in the Western Outer Carpathians (southeastern Moravia, Czech Republic)
Original language description
Neogene subvolcanic rocks in southeastern Moravia form numerous dykes and laccoliths, ranging from clinopyroxene-amphibole and amphibole trachybasalt, through trachyandesite, to biotite-amphibole trachydacite. Leucocratic and melanocratic cumulate gabbro and basalt enclaves up to 70 cm in diameter are rarely present, respectively, within the trachydacite and trachyandesite.The parental magmas rose along tensional fissures spatially related to the Nezdenice Fault but probably never reached the surface. The range of major (e.g., SiO2 44-62 wt. percent, mg# 20-65) and trace-element compositions can be explained through magma mixing and mingling and subsequent fractional crystallization.Mineral chemistry shows limited compositional variation of mafic minerals. Diopside phenocrysts indicate narrow ranges of XMg 0.65-0.84 and usually display normal zoning with small Mg-rich cores and Fe-rich rims. Phlogopites from the trachydacite and gabbro enclaves show a mutually similar composition (XFe 0.36-0.43 and IVAl 2.44-2.59). Amphiboles from individual samples of basalt, trachybasalt and trachyandesite are likewise chemically relatively homogeneous (XMg 0.51-0.86, Si 5.78-6.55). Chemical compositions of amphibole phenocrysts from the trachybasalts and trachyandesites indicate multi-stage crystallization at depth of 32 to 21 km for this magmatic system. Systematic changes in Si, Ti, VIAl, XMg contents in amphiboles from trachydacites and gabbro enclaves can be explained by fractional crystallization in a shallower magma reservoir (~20-10 km).
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
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
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 Geosciences
ISSN
1802-6222
e-ISSN
—
Volume of the periodical
64
Issue of the periodical within the volume
2
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
21
Pages from-to
105–125
UT code for WoS article
000484048000002
EID of the result in the Scopus database
2-s2.0-85075202201