Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6125
EASTING   559615     NORTHING   6025954     ZONE   14     DATUM   NAD83
Date of mapping    06/14/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 335 71
schistosity 52 68
fault 335 62 dextral

-5 mm moderatly silicified psuedotachylite with epidote alteration, fault offset 1 m

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
augened
biotite

Field Description:

-(augen GRDR) seriate(?) trimcoal distribution or pinkish grey lath-shaped microclines and distributed in 5 mm, 10 m and 15 mm ranges
-matix is uniform mm. grain size megacryst augenment is in older F1 plane crossed by younger 050 direction producing dominantly similar folds
-maybe trace (z-assymetric) of HB, roughly retrograded to BO

Rock Number: 2

Rock Type: tonalite
Descriptors:
augened
biotite

Field Description:

-augen TNLT
-old base rock for MG complex largely reduced to nebulitic schlieren
-identifiable inclusions represent <5% of exposure
-sparsity of young peg. at location


Manitoba Geological Survey, 2017