Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5514
EASTING 571569 NORTHING 6042665 ZONE 14 DATUM NAD83
Date of mapping 06/30/1984

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 59 | 72 |
fault | 193 | 61 |
joint | 252 | 57 |
joint | 162 | 89 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: two component schlieric gneiss - intimate mixture of 2 major units
Field Description:

-well foliated biege weathering gRDR TNLT, intruded by sub-horizontal vein networks and sills of buff leuco-quartz monzonite
-this has been intensivly passively folded by the 059 steep cataclastic foliation producing tight upright folds with a near horizontal axis
-this makes fold profiles observed on outcrop surface appear highly assymetric and disharmonic
-varying outcrop profiles add to the confusion resulting in a near random schlieric fabric
-thin mylonite zones are planar cutting the general cataclastic fabric but are offset on local 060 degree cataclastic planes
-this would seem to indicate the Whiskey Jack Compression zone had an extended period of activity that was probably pulsed

Manitoba Geological Survey, 2017