Regional low-temperature fluid flow indicated by quartz mineralization in Silesicum, NE Bohemian massif

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00116739" target="_blank" >RIV/00216224:14310/20:00116739 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.31577/GeolCarp.71.3.3" target="_blank" >https://doi.org/10.31577/GeolCarp.71.3.3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31577/GeolCarp.71.3.3" target="_blank" >10.31577/GeolCarp.71.3.3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Regional low-temperature fluid flow indicated by quartz mineralization in Silesicum, NE Bohemian massif

Popis výsledku v původním jazyce

The crystalline rocks of the Silesicum unit of the Bohemian Massif host two principal types of hydrothermal quartz veins. Veins associated with granitoids are primarily quartz with wollastonite and epidote and accompanied by hydrothermal alteration of host rocks whereas others are of the more complex "Alpine-type". L+ V + S (liquid + vapour + solid phase) fluid inclusions within quartz crystals contain muscovite and +/- calcite (+/- haematite) as solid phases and homogenisation temperatures are between 124 and 176 degrees C. Trapped fluids are uniformly of the H2O-NaCl-CaCl2 +/- MgCl2 +/- KCl system with a salinity between 9.1 and 26.8 mass % (NaCl+CaCl2). The variable Na/Ca ratios result from different intensity of fluid-rock reactions. The ubiquitous muscovite is a product of fluid-rock interactions. Oxygen isotope evidence indicates that the fluids were a mixture of meteoric and marine waters in deep regional-scale convection systems. The studied type of fluids represents a post-Variscan hydrothermal system and shows the extent of migration pathways in the upper crust on the north-eastern edge of the Bohemian Massif.

Název v anglickém jazyce

Regional low-temperature fluid flow indicated by quartz mineralization in Silesicum, NE Bohemian massif

Popis výsledku anglicky

The crystalline rocks of the Silesicum unit of the Bohemian Massif host two principal types of hydrothermal quartz veins. Veins associated with granitoids are primarily quartz with wollastonite and epidote and accompanied by hydrothermal alteration of host rocks whereas others are of the more complex "Alpine-type". L+ V + S (liquid + vapour + solid phase) fluid inclusions within quartz crystals contain muscovite and +/- calcite (+/- haematite) as solid phases and homogenisation temperatures are between 124 and 176 degrees C. Trapped fluids are uniformly of the H2O-NaCl-CaCl2 +/- MgCl2 +/- KCl system with a salinity between 9.1 and 26.8 mass % (NaCl+CaCl2). The variable Na/Ca ratios result from different intensity of fluid-rock reactions. The ubiquitous muscovite is a product of fluid-rock interactions. Oxygen isotope evidence indicates that the fluids were a mixture of meteoric and marine waters in deep regional-scale convection systems. The studied type of fluids represents a post-Variscan hydrothermal system and shows the extent of migration pathways in the upper crust on the north-eastern edge of the Bohemian Massif.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Geologica Carpathica

ISSN

1335-0552

e-ISSN

1336-8052

Svazek periodika

71

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

16

Strana od-do

233-248

Kód UT WoS článku

000562487200003

EID výsledku v databázi Scopus

2-s2.0-85087856155