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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

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

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Jahrbuch der Geologischen Bundesanstalt

ISSN

0016-7800

e-ISSN

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Svazek periodika

149

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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