Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 83
STATION 5000
EASTING 571781
NORTHING 6046740
ZONE 14
DATUM NAD83
Date of mapping 06/17/1983
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 208 | 87 |
Type | Symmetry | Strike | Dip | Plunge | Azimuth |
---|---|---|---|---|---|
similar fold | Z | 41 | 76 | 55 | 61 |
minor fold has strong associated axial planar schistosity
PETROLOGIC DATA
Rock Number: 1
-Trace magnetite.
-Probable volcanic wacke/siltstone.
-Finely laminated with calcsilicate lenses. Possible thin mafic tuff horizons.
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
groundmass grainsize | 0.0 | 0.1 | mm | ||
mafic mineral | 0.0 | 0.0 | 25.0 | mm | |
bedding thickness | 1.0 | 5.0 | m |
Mineral | Abundance (%) |
---|
diopside |
magnetite |
Rock Number: 2
Boudinage:
-Block boudins of beige pegmatite.
-Minor marginl shearing.
-Primitive zoning with 3-10cm potassium feldspar in core
-Almost no free quartz
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
raft size in metres | 20.0 | 120.0 | m |
Mineral | Abundance (%) |
---|
potassium feldspar |
biotite |
tourmaline |
Manitoba Geological Survey, 2017