Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5548
EASTING 567933 NORTHING 6056761 ZONE 14 DATUM NAD83
Date of mapping 07/06/1984

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 41 | 70 |

PETROLOGIC DATA

Rock Number: 1

Rock Type:
Field Description:

-complexly folded and somewhat sheared inter bedded sequence of grey garnetiferous psammite
-feldspathic SNDS
-white faserkiesal rich MV schists and PRQZ and white quartzite layers
-quartzite occur in calc. arenite and calc. silicate layers
-the SNDS beds show some preserved festoon type crossbeds
-all other units have delicate parallel lamination
-fold pattern is very confusing and appears to be a cross fold involving a 050 direction crossbedde by a weak 320 direction
-structures plunge NE but axial surfaces are disharmonic calc-silicate layers are generally spongy textured white QZ with EP and HB and minor carbonate interstitial
-calc arenite units are mafic blacke to dark beige HB, feldspar layers
-thick calc. silicate layers may have cores up to 20 cm wide of green chlorite and diopside
-the true quartzite layers have a grain size of .2 mm which probably reflects an original coarse silt nature
-they appear to contain 90-95% quartz

Manitoba Geological Survey, 2017