Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5581
EASTING   579456     NORTHING   6060501     ZONE   14     DATUM   NAD83
Date of mapping    07/12/1984

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 232 77

PETROLOGIC DATA

Rock Number: 1

Rock Type: gabbro
Descriptors:
massive
mesocratic

Field Description:

-whole island is gabbro containing a two m shear zones down the middle comprosing mylonitic amphibolites derived from the gabbro
-there is a marked textural difference in gabbro across FT, containing grain size or south 2 mm and on north 1 mm

SAMPLE A; fine grained north side
SAMPLE B; coarse grained south side

Minerals of Note
Mineral Abundance (%)
garnet


Manitoba Geological Survey, 2017