Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 84
STATION 5540
EASTING 570342
NORTHING 6055552
ZONE 14
DATUM NAD83
Date of mapping 07/05/1984
STRUCTURAL DATA
Layering type | Strike | Dip | top Direction |
---|---|---|---|
bedding | 216 | 68 |
Structure type | Strike | Dip | Separation |
---|---|---|---|
cataclastic foliation | 216 | 68 |
Rock Number | Type | Width (m) | Strike | Dip |
---|---|---|---|---|
0 | Molson dike | 0.00 | 216 | 68 |
PETROLOGIC DATA
Rock Number: 1
-semi-pelitic to pelitic sill musco. rich
-in many ways similar to Kisseynew Smak as found at Russell and Kamachowee Lake
-tourmaline occurs randomly as 1 to 3 mm needles and cm size crystals in quartz and pegmatite veins
-has 2 m beds of white weathering protoquartzite
-this rock is distinctly different from the psammitic greywacke but probably equivelent to the previously encoutered feldspathic SNDS
Mineral | Abundance (%) |
---|
sillimanite |
muscovite |
garnet |
tourmaline |
Rock Number: 2
-two Molson dikes occur on outcrop both parallel to layering and foliation
-one is 25 cm wide, the other occurs on the west edge of the outcrop island
-it is exposed for 1.5 m
-it shows as good chill margin and rapid increasing grain size away from margin
-the majority of the float in the swamp west or the island is coarse Molson gabbro, as encountered farther south on the channel
-this location is in almost perfect alignment containing the previous occurences and thus may be the eastern contact of the thick Molson dike occupying the channel
-the rock is highly magnetic as previous occurances
-this is true for the thin dike also
Manitoba Geological Survey, 2017