Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 86
STATION 6511
EASTING 570682
NORTHING 6042784
ZONE 14
DATUM NAD83
Date of mapping 08/01/1986
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 67 | 82 | |
joint | 238 | 66 | |
joint | 164 | 82 |
-2JT-sets are strong, tightly spaced, intersecting
-locally almost a shear fabric with spacing of 1 cm or less
-they occur through out the outcrop, but become concentrated locally in zones up to 50 cm wide and intersect in diamond shaped zones of near granulation
PETROLOGIC DATA
Rock Number: 1
-Fairly typical complex mixture of old augen TNLT, young grey GRDR, numerous PGT. of various ages, mafic schlerin, and AMPB inclusions
-all highly deformed with what appears to be the origin 270 degree direction (and assume) caught-up in the later deformation
-the AMPB inclusions appear to be a mixture of rock types including MASS-BSLT-AMPB, LAYD (possibly layered AMPB), and medium grained mesogabbro
-they appear to be a jumbled mass, largely floating in grey GRDR-PGMT
Rock Number: 2
-pink weathering with a pink and grey banded surface, slighly schleric
-this appears to be camp-BRDR and is obviously a younger intrusion at this location
-there is no indication of the early fabric which it sharply truncate on the MCSG
-contacts are planar at 175 degrees/78
-the SC measurement was taken in this rock
-there are vague pegmatitic patches with traces of GR
Mineral | Abundance (%) |
---|
garnet |
Manitoba Geological Survey, 2017