Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6248
EASTING   557825     NORTHING   6035526     ZONE   14     DATUM   NAD83
Date of mapping    06/27/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 47 46

-poor outcrop--can't be sure of field rel.

PETROLOGIC DATA

Rock Number: 1

Rock Type: gabbro
Descriptors:
massive
leucocratic

Field Description:

-salt and pepper gabbro - varies from locally near anorthesite (CI=5) over small area to average of around 17
-still in good shape with relativly weak fabric - appears to be raft complex in past GRDR
-rafts margins are generally sheared peg. mylonite
-90% of exposure gabbro

Rock Number: 2

Rock Type: granodiorite
Descriptors:
porphyritic
biotite

Field Description:

-pink phenos in light grey weathering GRDR
-shear fabric strong-->generally layered gneiss
-visable only at top of outcrop


Manitoba Geological Survey, 2017