Record details

Title
    Comparison of the new fracture areas created by the formation of en echelon and hackle fringes on joint surfaces
Statement of responsibility
    Dov Bahat, Peter Bankwitz, Avinoam Rabinovitch
Other titles
    Grössenvergleich von neuentstandenen Bruchflächenanteilen durch Bildungen von en echelon - oder von hackle-Randzonen auf Kluftflächen
Author
    Bahat, Dov
    Bankwitz, Peter
    Rabinovitch, Avinoam
Language
    anglicky
Source title - serial
    Zeitschrift für geologische Wissenschaften
Vol./nr.
    Vol. 30, no. 1-2
Pages
    p. 1-12
Year
    2002
Notes
    4 obr., 5 fot.
    il.
    Německé resumé
    Obsahuje bibliografické odkazy
    Zkr. název ser.: Z. geol. Wiss.
Classfication no.
    551.2
    552
Conspectus category
    55
    552
Subject group
    granit
    kámen dekorační
    kontrola tektonická
    metoda matematická
    moldanubický pluton
    odlučnost
    pluton
    puklinatost
Geographical name
    ČR-Morava
    Mrákotín (Jihlava, Telč)
Keyword
    Areas
    Comparison
    Created
    Echelon
    Formation
    Fracture
    Fringes
    Hackle
    Joint
    New
    Surfaces
Abstract (in english)
   The distinction between fringes of en echelon segmentation and hackles on joint surfaces is important because they reflect different fracture conditions. We found that the normalized (real) ratios of hidden area divided by revealed area on the hackle and en echelon fringes of joints A and C are respectively, rH= 0.44 and rE= 0.14, while rH/rE = 3.14. This shows that considerably more new area is formed in hackle zones than in en echelon zones per a given nominal area of the fringe. Possibly, the transformation of some KI to KIII in the transition from hackle to en echelon fringe involves an increase in heat loss, which is the portion of energy not used in the creation of new fracture surfaces
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    21. 3. 2008
Import date
    8. 8. 2012