Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 84
STATION 5400
EASTING 575345
NORTHING 6060065
ZONE 14
DATUM NAD83
Date of mapping 06/11/1984
STRUCTURAL DATA
Layering type | Strike | Dip | top Direction |
---|---|---|---|
bedding | 59 | 89 |
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 59 | 89 | |
fault | 47 | 83 | sinistral |
Type | Plunge | Azimuth |
---|---|---|
clast elongation | 0 | 0 |
Clast elongation lineation pitches 89 degrees east in the schistocity
-interlayered sequence of lithic wackes and highly deformed conglomerates
-metamorphic grade appears to be almandine amphibolite facies with numerous faser kiesel in the wacke beds
PETROLOGIC DATA
Rock Number: 1
-variable bed thickness from 15 to 130 cm with cross beds common
-rare scour channels
-high quartz content-60 to 65% with numerous grey quartz granules
-calcsilicate layers common with fine amphibolite and 3 to 4mm GR blasts
-calcsilicate as layers or anastomosing patches
Mineral | Abundance (%) |
---|
garnet |
sillimanite |
magnetite |
Rock Number: 2
-beds up to 2.5 m
-numerous small scours
-clast supported in general but may have some matrix supported beds
-clasts types dominated by sediments but may have significant mafic clast component
-rare bull quartz clasts
-one layer contains several clasts of iron formation
-one clasts of granodiorite appears to have weathering rind
-also present are felsite, granite, tonalite, quartzite and intermediate wacke clasts
Mineral | Abundance (%) |
---|
garnet |
magnetite |
Manitoba Geological Survey, 2017