Record details

Title
    Cementační karbonátové horniny karlovarských termálních pramenů
Statement of responsibility
    Jiří Babůrek
Other titles
    Structural relationships of Carlsbad aragonite
Author
    Babůrek, Jiří
Language
    česky
Source title - monograph
    Horniny ve vědách o Zemi
Pages
    s. 195-211
Notes
    2 obr., 8 fot., 3 tab., 12 bibl.
    Anglické resumé
Subject group
    aragonit
    granit
    konference
    krušnohorský pluton
    pramen termální
    sedimentace recentní
    sedimenty karbonátové
    sedimenty pramenů
    voda termální
Geographical name
    ČR-Čechy
    Karlovy Vary
Keyword
    Cementační
    Horniny
    Karbonátové
    Karlovarských
    Pramenů
    Termálních
Abstract (in english)
   Carlsbad aragonite in its typical banded development consists of changing red-brown and snow-white ribbons. Four types of structure have been distinguished by microscopy: 1. columnar porous structure; 2. columnar compact structure; 3. radiolitic structure; 4. equigranular structure. The results of microscopical study show that under specific conditions aragonite veins are recrystallized, and the structures are changing in the described 1.-4. order of crystallization. Some grains in ribbons of equigranular structure are formed of more stable CaCO3 phase: calcite. The main mineral of insoluble residues is dioctahedral mica (muscovite-hydromuscovite-illite), further minerals are: quartz, kaolinite, hematite, goethite and K-feldspar. Three ways of Carlsbad aragonite development were distinguished, which correspond to the varying discharge of thermal water.
   By X-Ray identification of fissure filling and pseudomorphs after feldspars the presence of aragonite was distinguished at the sampling depth of 47.20 m. Fissure filling and pseudomorphs after feldspars represent a primary milieu of the Carlsbad aragonite formation
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    31. 3. 2008
Import date
    8. 8. 2012