Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5016
EASTING   567969     NORTHING   6044319     ZONE   14     DATUM   NAD83
Date of mapping    06/19/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 78 59

-photos--pegmatitic lit in GRDR

PETROLOGIC DATA

Rock Number: 1

Rock Type: tonalite
Descriptors:
gneissic
leucocratic
augened

Field Description:

-highly injected by early pegmatitic lit
-lots of augen

Rock Number: 2

Rock Type: granodiorite
Descriptors:
massive
biotite
boudin or boudinaged

Field Description:

-1 x 3 m boudins of grey GRDR
-.1-3cm veins of aplite intruded then intenively ptygmatically folded in foliation plane

PHOTOS


Augen leuco-tonalite with ptygmatic folded pegmatitc lit.


Young pegmatitic lit intruded into the axial plane of ptygmatic folds. Occurs in porphyritic grey granodiorite raft in the older augen leuco-tonalite


Manitoba Geological Survey, 2017