Record details

Title
    Physical and mechanical properties of selected amphibolite core samples from the Kola Superdeep Borehole KSDB-3
Statement of responsibility
    Jiřina Trčková, Roman Živor, Richard Přikryl
Author
    Přikryl, Richard, 1968-
    Trčková, Jiřina, 1945-
    Živor, Roman, 1958-
Language
    anglicky
Source title - serial
    Terra nova
Vol./nr.
    Vol. 14, no. 5
Pages
    p. 379-387
Year
    2002
Notes
    5 diagr., 3 fot.
    il.
    Obsahuje bibliografické odkazy
    Zkr. název ser.: Terra nova
Classfication no.
    55(1)
    552
Conspectus category
    55
    552
Subject group
    amfibolit
    geologie regionální
    laboratorní zkoušky hornin
    proterozoikum
    vlastnosti fyzikální
    vlastnosti mechanické
    vrt hluboký
Geographical name
    Rusko-sever evropské části
Keyword
    Amphibolite
    Borehole
    Core
    Kola
    KSDB-3
    Mechanical
    Physical
    Properties
    Samples
    Selected
    Superdeep
Abstract (in english)
   Laboratory tests of physical and mechanical properties were performed on amphibolites representing two units from the Kola Superdeep Borehole KSDB-3 (Russia) - the Proterozoic Karelian Complex (depths of 3043 m, 3530 m and 4389 m) and the Archean Kola-Belomorian Complex (depths of 7951 m, 8942 m and 9904 m). Obtained grain density and bulk density values are nearly identical for all tested samples, but porosities increased slowly with depth. Marked differences in strength properties were found between amphibolite samples from the Karelian Complex and amphibolite samples from the Kola-Belomorian Complex. The uniaxial compressive strength of the samples from the lower part of the borehole is significantly smaller than in samples from the upper part; a similar trend was found for triaxial tests. The values of the deformation modulus, Young's modulus and Poisson's ratio obtained from samples of the Karelian Complex are considerably higher than those from the Kola-Belomorian Complex.
   Observed mechanical properties are explained by the variable grain-size distribution and by the spatial arrangement of main rock-forming minerals. These properties are also influenced by recovery of rocks from great depths
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    25. 3. 2008
Import date
    8. 8. 2012