Anisotropy of magnetic susceptibility along the contact between the Metabasite and Diorite zones of the Brno Massif in the Velká Baba area near Jinačovice

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F15%3A00108642" target="_blank" >RIV/00216224:14310/15:00108642 - isvavai.cz</a>

Result on the web

<a href="https://journals.muni.cz/gvms/article/view/4665" target="_blank" >https://journals.muni.cz/gvms/article/view/4665</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5817/GVMS2015-1-2-29" target="_blank" >10.5817/GVMS2015-1-2-29</a>

Result language

čeština

Original language name

Anizotropie magnetické susceptibility hornin na kontaktu metabazitové a dioritové zóny brněnského masivu v okolí Velké Baby u Jinačovic

Original language description

An anisotropy of magnetic susceptibility and temperature dependence on magnetic susceptibility were used to reveal an evolution history along the contact of the Metabasite and Diorite zones of Brno massif north of Brno-Řečkovice. The analysis of temperature dependence of magnetic susceptibility indicated that magnetic properties of all rocks in this area are essentially controlled by magnetite with a very small contribution of pyrhotite and hematite. These minerals were formed later than the primary magmatic minerals. Therefore we assume that magnetic fabrics in studied rocks reflects deformational processes affected these rocks. There are three patterns in anisotropy of magnetic susceptibility (AMS) in studied rocks. In the first pattern detected in diorites, the magnetic foliation is striking NE–SW, dipping to the NW and there is subvertical magnetic lineation. The second planar magnetic indicates a rotational movement of microgranite rocks along the contact of the Metabasite and Diorite zones. The last pattern found in rocks of the Metabasite zone is magnetic foliation striking NNE–SSW dipping on the NWW and magnetic lineation trending to the SW with plunge of 42° shows normal faulting of studied area.

Czech name

Anizotropie magnetické susceptibility hornin na kontaktu metabazitové a dioritové zóny brněnského masivu v okolí Velké Baby u Jinačovic

Czech description

An anisotropy of magnetic susceptibility and temperature dependence on magnetic susceptibility were used to reveal an evolution history along the contact of the Metabasite and Diorite zones of Brno massif north of Brno-Řečkovice. The analysis of temperature dependence of magnetic susceptibility indicated that magnetic properties of all rocks in this area are essentially controlled by magnetite with a very small contribution of pyrhotite and hematite. These minerals were formed later than the primary magmatic minerals. Therefore we assume that magnetic fabrics in studied rocks reflects deformational processes affected these rocks. There are three patterns in anisotropy of magnetic susceptibility (AMS) in studied rocks. In the first pattern detected in diorites, the magnetic foliation is striking NE–SW, dipping to the NW and there is subvertical magnetic lineation. The second planar magnetic indicates a rotational movement of microgranite rocks along the contact of the Metabasite and Diorite zones. The last pattern found in rocks of the Metabasite zone is magnetic foliation striking NNE–SSW dipping on the NWW and magnetic lineation trending to the SW with plunge of 42° shows normal faulting of studied area.

Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10500 - Earth and related environmental sciences

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

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

Name of the periodical

Geologické výzkumy na Moravě a ve Slezsku

ISSN

1212-6209

e-ISSN

—

Volume of the periodical

22

Issue of the periodical within the volume

1-2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

5

Pages from-to

23-27

UT code for WoS article

—

EID of the result in the Scopus database

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