Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5637
EASTING   570385     NORTHING   6048940     ZONE   14     DATUM   NAD83
Date of mapping    07/23/1984

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 271 70

Dikes and Sills:
Rock Number Type Width (m) Strike Dip
0 Molson dike 0.00 207 77

Linear Structures
Type Plunge Azimuth
rodding 61 51

-variable thickness of dike to 1 m, non magnetic Molson

PETROLOGIC DATA

Rock Number: 1

Rock Type: volcaniclastic
Descriptors:
cataclastic
mafic

Field Description:

-moderately sheared volcanic derived seds comprising mixed basalt andesite material
-thin remnants of felsic silts and a lite grey weathering plag quartz HB matrix material
-epidote pods are common
-shearing probably took place at high angle to layering so all beds disrupted and rotated into foliation
-the original rock was probably an interlayered series of mafic mudstones and siltstones, poss. with some thin mafic conglom. horizons
-there may have been basaltic flows within sed. section as there are relativly well preserved massive amphibolite layers

Minerals of Note
Mineral Abundance (%)
garnet


Manitoba Geological Survey, 2017