Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5112
EASTING   575516     NORTHING   6042426     ZONE   14     DATUM   NAD83
Date of mapping    07/09/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
gneissosity 43 53
fault 312 73

Linear Structures
Type Plunge Azimuth
rodding 40 89

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
schlieric or schlieren present
biotite

Field Description:

-rock has become "two component schlieric gneiss" with 5 % porphyritic grey granodiorite (sample 1B) 20 % injected granodiorite lit (mainly pegmatitic). The remainder coarse grey granodiorite with insipient development of augen. A few rafts of layered amphibolite are preserved with little observed assimilation
-development of the late cross fault pattern is very strong with fracture spacing ranging from 25 cm to 3 m

Minerals of Note
Mineral Abundance (%)
hornblende


Manitoba Geological Survey, 2017