Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5638
EASTING   570147     NORTHING   6048824     ZONE   14     DATUM   NAD83
Date of mapping    07/23/1984

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 73 66

Linear Structures
Type Plunge Azimuth
mineral lineation 0 0

-LINEATION: pitch 57 degrees east in the foliation, HB elongation

PETROLOGIC DATA

Rock Number: 1

Rock Type: volcaniclastic
Descriptors:
schistose
mafic

Field Description:

-highly foliated patchy HB bearing seds. probably derived from volcanics
-discontinuous layering, numerous small epidote pods, and sheared quartz CO3 veins

Rock Number: 2

Rock Type: greywacke
Descriptors:
schistose
mafic

Field Description:

-massive units up to 2 and 1/2 m thick of grey, HB bearing, poorly laminated psammite
-homogenous, equigranular, and numerous sheared out quartz veins

Minerals of Note
Mineral Abundance (%)
hornblende

Rock Number: 3

Rock Type: tonalite
Descriptors:
schistose
leucocratic

Field Description:

-colour index = 3
-small sheared dikes intruding sediments, highly discontinuous, chopped up in foliation
-they seem to increase in abundance towards the south


Manitoba Geological Survey, 2017