Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6296
EASTING   569890     NORTHING   6047773     ZONE   14     DATUM   NAD83
Date of mapping    07/07/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 288 56

Linear Structures
Type Plunge Azimuth
rodding 38 84

-elongation of quartz and feld. aggregates

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
augened
leucocratic

Field Description:

-QZ- 25%-- White weathering medium grained with quartz around fels. agg. augen
-disseminated red granite
-youngest unit (except for aplite/peg.) at 6284
-numerous inclusions and schlieren

Minerals of Note
Mineral Abundance (%)
garnet

Rock Number: 2

Rock Type: amphibolite
Descriptors:
cataclastic
biotite - hornblende bearing

Field Description:

-sheared and injected, bleached looking massive rock-probably basalt inclusion

Rock Number: 3

Rock Type: pegmatite
Descriptors:
cataclastic
aplitic

Field Description:

-red glasy almost mylonitic granititic dikes
-5 to 50 cm wide

Rock Number: 4

Rock Type: granodiorite
Descriptors:
cataclastic
biotite

Field Description:

-grey weathering older more mafic augen gneiss
-largely included in rock 1
-this is the major rock of 6284


Manitoba Geological Survey, 2017