NJG51-2-03
1971
A tourmaline-bearing eclogite from Sunnmøre, Norway
51
2
141-147

Tourmaline is present in an eclogite occurring in the Basal Gneiss Region of South-West Norway. It is deduced from the petrography and mineralogy of the eclogite that the tourmaline was probably an integral part of the rock, and hence was not formed by late-stage pneumatolytic alteration. The physical conditions of growth of the tourmaline are interpreted to be of higher grade than those represented by the amphibolite facies of metamorphism, but probably below those of the anhydrous eclogite facies; conditions tentatively referred to as the 'hydrous eclogite facies'.

0029-196X
Print