Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5066
EASTING   570872     NORTHING   6038031     ZONE   14     DATUM   NAD83
Date of mapping    06/25/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 56 71
cataclastic foliation 56 71

Several 30-50 cm simple quartz-feldspar-biotite pegmatite dykes with a general northerly trend - extensively sheared

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
lit injection
strongly deformed
inclusions present

Field Description:

-some highly injected mesocratic granodiorite as before with amphibolite and sediment inclusions

Textural Features
Type Mineral Min. Size Max. Size Abundance (%) Unit
mafic mineral hornblende 0.0 0.0 15.0 mm

Rock Number: 2

Rock Type: diorite
Descriptors:
massive
occurs as a raft
30 % of the outcrop
moderately sheared

Field Description:

-around 30% of outcrop is large raft complex of mela-diorite
-massive, featureless, moderate shearing

Textural Features
Type Mineral Min. Size Max. Size Abundance (%) Unit
mafic mineral hornblende 0.0 0.0 35.0 %
groundmass grainsize 0.0 0.5 mm


Manitoba Geological Survey, 2017