Record details

    Cementační karbonátové horniny karlovarských termálních pramenů
Statement of responsibility
    Jiří Babůrek
Other titles
    Structural relationships of Carlsbad aragonite
    Babůrek, Jiří
Source title - monograph
    Horniny ve vědách o Zemi
    s. 195-211
    2 obr., 8 fot., 3 tab., 12 bibl.
    Anglické resumé
Subject group
    krušnohorský pluton
    pramen termální
    sedimentace recentní
    sedimenty karbonátové
    sedimenty pramenů
    voda termální
Geographical name
    Karlovy Vary
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
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    31. 3. 2008
Import date
    8. 8. 2012