Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5092
EASTING 572828 NORTHING 6039755 ZONE 14 DATUM NAD83
Date of mapping 07/07/1983

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
fault | 158 | 73 |

Fault is a 5 mm mylonite

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
schlieric or schlieren present
biotite-plagioclase bearing
Field Description:

-looks like two component schlieric gneiss but with augen granodiorite as base component
-must have intruded another compressive zone as every thing is highly flatted and stretched into gneissocity with abundant k-feldspar augens from old pegmatite

Rock Number: 2

Rock Type: granodiorite
Descriptors:
porphyritic
biotite
Field Description:

-numerous intruded(?) layers of younger grey granodiorite
-appears to have both varieties; the porphytitic and the massive mesocratic granodiorite
-see samples

Manitoba Geological Survey, 2017