Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 84
STATION 5483
EASTING 575873
NORTHING 6041259
ZONE 14
DATUM NAD83
Date of mapping 06/28/1984
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
cataclastic foliation | 66 | 81 |
-three photos of GRDR porphyry showing cataclasis to grey augen gneiss
-1 photo of laminated mafic siltstone and basalts
PETROLOGIC DATA
Rock Number: 1
-grey microcline prophyry granodiorite with expense cataclasis producing areas of grey augen gneiss
-this augen gneiss looks much like the younger grey porphyritic granodiorite in the Clearwater Bay Complex
-the GRDR is intruded by coarse pink leucogranite dikes that are sheared and folded into intrafolial folds in the cataclastic foliation plane
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
mafic mineral | 0.0 | 0.0 | 4.0 | % |
Rock Number: 2
-interbedded mafic to amphibolitic siltstone and basalts
-sed. are probably tuffaceous material (see sample)
-they are mylonitized and deformed in granodiorite
Manitoba Geological Survey, 2017