Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 84
STATION 5405
EASTING 575838
NORTHING 6060479
ZONE 14
DATUM NAD83
Date of mapping 06/13/1984
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
cataclastic foliation | 239 | 81 | |
fault | 47 | 84 |
-isoclinal folded quartz veins transect the foliation in a N/S direction and post date the mylonites
PETROLOGIC DATA
Rock Number: 1
-same lithic wacke with rare pebbly beds
-shearing completly obliterated all sense of bedding direction
-sillimanite is heavily alltered to muscovite
-numerous pseudotachylites, often spaced cm apart
-faults are feathered and arcuate, quartz conten has decrease to 35%
-lithics are indistinguishable from matrix
-quartz veins invasive into foliation plane contain abundant hornblende and chlorite, probably by iron leaching of the sands
Mineral | Abundance (%) |
---|
muscovite |
sillimanite |
Manitoba Geological Survey, 2017