Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 83
STATION 5062
EASTING 570198
NORTHING 6037887
ZONE 14
DATUM NAD83
Date of mapping 06/25/1983
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
cataclastic foliation | 71 | 73 | |
fault | 71 | 73 |
Type | Symmetry | Strike | Dip | Plunge | Azimuth |
---|---|---|---|---|---|
similar fold | Z | 68 | 66 | 7 | 57 |
Fault is 5 cm ultramylonite
Fold 10 cm amplitude isoclinal (inter-limb angle 30°)
PETROLOGIC DATA
Rock Number: 1
-Cataclastic zone with main rock of medium grained grey white hornblende rich intrusive
-unlike any granodiorite/tonalite encountered so far
-Contains inclusions(?) of finer grained grey to dark grey matierial that may have been sedimentary and/or volcanic
-quartz 20%
- hornblende 15%
- magnetite trace to 1%
-65% feldspar
-epidote occurs along fracture and in mylonites
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
mafic mineral | hornblende | 0.0 | 0.0 | 15.0 | % |
mineral abundance | quartz | 0.0 | 0.0 | 20.0 | % |
mineral abundance | feldspar | 0.0 | 0.0 | 65.0 | % |
Mineral | Abundance (%) |
---|---|
epidote | |
magnetite | 1.0 |
Manitoba Geological Survey, 2017