Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 86
STATION 6357
EASTING 558729
NORTHING 6043843
ZONE 14
DATUM NAD83
Date of mapping 07/13/1986
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 72 | 87 |
Type | Symmetry | Strike | Dip | Plunge | Azimuth |
---|---|---|---|---|---|
similar fold | 0 | 0 | 46 | 87 | |
similar fold | 0 | 0 | 54 | 251 |
-2 axis measurements are on the same synformal fold running length of outcrop
PETROLOGIC DATA
Rock Number: 1
-Rousell's 4A greywacke is not present
-granitic injected and isoclinally folded high grade ampb
-at a guess I would say because of the layering and general appearance it once was a basalt
-point is folded by a tight syncline that has a generally sub horizontal axis but rises and falls giving opposing plunges
-minor sulfur gossan in core of synform--hinge live appears to be sheared out
-there appears to be a massive and layered sequence of ampb with some of the layered units probably sedimentary ampb
-one layer about 3 m thick(?) at south side of outcrop is a strange blastic plagiclase phyric mafic rock
-it has some of the appearance of a shoreshonitic basalt
-this unit is not separated on the north of the fold unless the fold is highly assym. and the unit reappears in the lake
Mineral | Abundance (%) |
---|
garnet |
Manitoba Geological Survey, 2017