Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5201
EASTING   573265     NORTHING   6056962     ZONE   14     DATUM   NAD83
Date of mapping    08/07/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 142 80

-contact between granite and sediments
foliation parallels contact

PETROLOGIC DATA

Rock Number: 1

Rock Type: granite
Descriptors:
porphyritic
biotite - muscovite bearing

Field Description:

-strongly feld. porphyritic with no quartz phenocrysts
-not much muscovite (<1%)
-now a light grey colour
-Possible contamination by assimilation although the contact with country rocks is razor sharp although it wanders according to joint pattern in supracrustals

Minerals of Note
Mineral Abundance (%)
magnetite

Rock Number: 2

Rock Type: conglomerate

Field Description:

-also sandstone


Manitoba Geological Survey, 2017