Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6167
EASTING   571208     NORTHING   6047083     ZONE   14     DATUM   NAD83
Date of mapping    06/19/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 285 59

PETROLOGIC DATA

Rock Number: 1

Rock Type: gneiss
Descriptors:
CCLS
leucocratic

Field Description:

-layered grey and white slightly augened gneiss
-local zones of more intense crushing 10 to 20 cm wide form layers of mylonite gneiss
-some vague biotite schlieren, highly flattened in the foliation, may have been amphibolite inclusions
-layered appearance largely comes from sheared pegmatite lee
-the rock is probably granitic in origin, but whether it was affiliated with CWB or teh grey porphyry is impossible to determine
-if necessary chemical analysis could probably tell


Manitoba Geological Survey, 2017