Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 83
STATION 5079
EASTING 572171
NORTHING 6039270
ZONE 14
DATUM NAD83
Date of mapping 06/27/1983
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 236 | 74 |
Exposed contact of footwall of the gabbro to the west
PETROLOGIC DATA
Rock Number: 1
-slightly augened porphyritic granitoid
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
mafic mineral | biotite | 0.0 | 0.0 | 13.0 | % |
groundmass grainsize | 0.5 | 2.0 | mm | ||
phenocryst | plagioclase | 0.0 | 0.0 |
Rock Number: 2
-70% of outcrop is complex raft system comprising dominantly ultramafic flows and derived tuffs. In one spot even looks like an ultramafic flow 1.5 m. thick with more felsic 25 cm flow top breccia (if you really stretch your imagination)
Manitoba Geological Survey, 2017