Record details

Title
    The current P-T condition in the Earth's continental crust
Statement of responsibility
    Miloš Suk
Other titles
    Současné teploty a tlaky v kontinentální kůře Země
Author
    Suk, Miloš, 1934-
Language
    anglicky
Source title - serial
    Krystalinikum
Vol./nr.
    Vol. 27
Pages
    p. 67-77
Year
    2001
Notes
    4 obr., 4 diagr.
    Bibliografie na s. 76-77
    České resumé
    il.
    Zkr. název ser.: Krystalinikum
Classfication no.
    55(1)
    551.2
Conspectus category
    55
Subject group
    Český masiv
    geologie dynamická
    geologie regionální
    kůra kontinentální
    lidské aktivity
    litosféra
    napětí
    podmínky P-T
    pohyb horizontální
    pohyb vertikální
    tepelný tok
    Západní Karpaty
Geographical name
    Česká republika
    Evropa střední
    Slovensko
Keyword
    Condition
    Continental
    Crust
    Current
    Earth's
    P-T
Abstract (in english)
   The measurements in the drill holes are an importants about the distribution of pressures and temperature in the lithosphere. Acquired data aren't in fully agreement ith some common petrological conceptions. The stress and the lithostatic pressure seems to be important factors at the origin of mineral associations by the metamorphism. On the faults a reduction of the pressure (a 'pressure paradox') appears, the stress field is influenced by the local fluid pressures and by the fluid migration. These factors are controlling the mineral composition of the rocks (metamorphic facies). Therefore the concept of mineral facies and theoretical 'facies of depth' especially, seems to be not correct. The temperature field of the Earth's continental crust is irregular and its variability is not connected with the rise of the energy flows from the interior only.
   A connection between the thickness of the crust, and mainly its middle 'granitic' layer is provided, the horizontal thermal flux probably play an important role too. All the metamorphic isogrades in the continental crust are subparalel to the surface in the times of metamorphism. The course of geotherms by measurements in the drill holes is quite different from the theoretical presumptions and common models
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    1. 12. 2006
Import date
    8. 8. 2012