mylonizationn.
/ˌmʌɪlənʌɪˈzeɪʃn/, /ˌmɪlənʌɪˈzeɪʃn/, U.S. /ˌmaɪlənəˈzeɪʃən/, /ˌmaɪləˌnaɪˈzeɪʃən/, /ˌmɪlənəˈzeɪʃən/, /ˌmɪləˌnaɪˈzeɪʃən/ Geology.
= mylonitization n.
ΘΚΠ
the world > the earth > minerals > change processes > [noun] > conversion to specific mineral
zeolitization1879
serpentinization1885
sericitization1888
uralitization1888
saussuritization1889
variolitization1890
propylitization1903
muscovitization1909
scapolitization1909
mylonitization1913
mylonization1913
myrmekitization1916
nephelinization1943
spilitization1946
1913 B. N. Peach et al. Geol. Central Ross-shire (Mem. Geol. Surv. Scot.) iii. 13 It would appear that the mylonisation of the gneiss is probably due to the passage over it of the great mass of rock brought forward by the Moine thrust-plane.
1945 J. A. Steers Unstable Earth (ed. 4) iii. 79 These led to recrystallization of the original materials of the rocks, and to the foliation and, in part, mylonization of the rocks.
1970 New Scientist 7 May 275/2 The rocks are crushed, smashed and sheared into an extremely fine grained powder, in a process called mylonization.
This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).
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n.1913