Mafic K- and Mg-rich magmatic rocks from Western Mühlviertel (Austria) area and the adjacent part of the Šumava Mountains (Czech Republic)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F09%3A00000427" target="_blank" >RIV/00025798:_____/09:00000427 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Mafic K- and Mg-rich magmatic rocks from Western Mühlviertel (Austria) area and the adjacent part of the Šumava Mountains (Czech Republic)

Original language description

One large and several small bodies of typical durbachite (SiO2 around 60-65%) appear in the Czech territory to the north of the Vltava valley. Several smaller bodies of extreme basic and mafic varieties of durbachite were newly found on both the Czech and Austrian sides of the state border, N of the town of Schwarzenberg: pyroxene-phlogopite melasyenite (<50% SiO2) and amphibole-phlogopite melasyenite (50-55% SiO2). Both varieties contain phenocrysts of K-feldspar (Kfs, about 3x1 cm) in a matrix of oligoclase, phlogopite (xMg=0.58-0.67), and actinolite (xMg=0.67-0.80), occasionally also diopside (xMg=0.74-0.78). Several ultramafic dykes with a content of mafic minerals >90% appear in the endo- and exocontact of the Prachatice and Křišťanov granulite bodies. The dyke rocks, termed here as glimmerites, are medium- to fine-grained, composed mainly of phlogopite (xMg 0.65-0.80) and actinolite (xMg=0.75-0.85). Cummingtonite (xMg=0.70-0.75) or diopside (xMg=0.81-0.83) appears only locally.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Name of the periodical

Jahrbuch der Geologischen Bundesanstalt

ISSN

0016-7800

e-ISSN

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Volume of the periodical

149

Issue of the periodical within the volume

4

Country of publishing house

AT - AUSTRIA

Number of pages

9

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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