Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6356
EASTING   557926     NORTHING   6044418     ZONE   14     DATUM   NAD83
Date of mapping    07/13/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 60 75
fracture cleavage 344 82

Dikes and Sills:
Rock Number Type Width (m) Strike Dip
0 Molson dike 0.10 62 61

-extremly clay covered

PETROLOGIC DATA

Rock Number: 1

Rock Type: amphibolite
Descriptors:
massive
mafic

Field Description:

-black HB-BO largely as inclusions in pegmatite although the SW side of outcrop is all ampb
-extensive tectonic and injection layering but where it is reasonably undisturbed the ampb is massive and featureless
-not likely to be volcanic ampb
-probably a med. gr. mesogabbro of the old mafic suite

Rock Number: 2

Rock Type: granite
Descriptors:
pegmatitic

Field Description:

-single BO +/- MV granite with irregular pegmatite patches that pass into continuous peg. dikes
-this is crosscut by later less deformed pegs.--quartz poor graphic MC
-probably Maniago suite


Manitoba Geological Survey, 2017