Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5402
EASTING   575529     NORTHING   6060279     ZONE   14     DATUM   NAD83
Date of mapping    06/11/1984

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 56 90

-multiple mylonite seams
-garnet blasts growing in the mylonite but rolled only, not crushed seem to indicate cataclasis was largely pre-thermal climax-see photos

PETROLOGIC DATA

Rock Number: 1

Rock Type: wacke
Descriptors:
lithic

Field Description:

-same type of interbedded wacke-CGLM sequence as 5400 with higher deformation-losing track of bedding directions because of extreme cataclasis
-quartz content seems to have decreased to 40%

Minerals of Note
Mineral Abundance (%)
garnet
muscovite
sillimanite

Rock Number: 2

Rock Type: conglomerate
Descriptors:
polymictic

Field Description:

-same as previous stations-extreme flattening and rodding
-no troughs or cross beds recognizable
-all matrix supported

Minerals of Note
Mineral Abundance (%)
garnet
muscovite


Manitoba Geological Survey, 2017