Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 84
STATION 5557
EASTING 571865
NORTHING 6046969
ZONE 14
DATUM NAD83
Date of mapping 07/08/1984
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
cataclastic foliation | 279 | 67 | |
fault | 190 | 70 | dextral |
-persistant set of cm spaced cross fractures
PETROLOGIC DATA
Rock Number: 1
-appears to have 2 main components
(1) a moderatly mafic augen GRDR to TNLT (sample a), this has some similarities to the grey porphyry GRDR in the CWB complex
(2) beige leuco-GRDR as at #5553, (sample B), this intrudes the grey GRDR and contain inclusions of it, the picture is further confused by inclusions of volc. , pegmatite and quartz veins. All are smeared out into a layered gneiss by shearing and then the mylonite was annealed
Rock Number: 2
-south of mylonite is sheared basaltic rocks that look like they were a mixture of pillowed and massive flows and mafic seds..
-everything is so sheared nothing definite can be said
Manitoba Geological Survey, 2017