Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5059
EASTING   563130     NORTHING   6054749     ZONE   14     DATUM   NAD83
Date of mapping    06/24/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 57 59

-intrusive relationship--MEGA TNLT older - it occurs as inclusions in the MCSG

PETROLOGIC DATA

Rock Number: 1

Rock Type: tonalite
Descriptors:
megacrystic
rock is an inclusion

Field Description:

-megacrysts of feldspar up to 1 cm
-15 % vein network not as well developed.
Included in rock 2

Textural Features
Type Mineral Min. Size Max. Size Abundance (%) Unit
porphyroblast plagioclase 4.0 10.0 15.0
mafic mineral hornblende 0.0 0.0 18.0 mm

Rock Number: 2

Rock Type: multi-component schlieric gneiss
Descriptors:
leucocratic

Field Description:

older tonalite of the main Clearwater Bay complex core rocks with some younger grey granodiorite sills.
Numerous inclusions of rock 1


Manitoba Geological Survey, 2017