Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5474
EASTING 577453 NORTHING 6061143 ZONE 14 DATUM NAD83
Date of mapping 06/27/1984

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 82 | 85 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: conglomerate
Field Description:

-very unusual station--may be a more extensive regolith than encountered previously
-essentially consists of a series of magnesian silty sediments with honey amphibole, dark brilliant green ultramafic layers with fibrous green amphibole
-vuggy calcareous silts with radial patches of brown fibrous amphibole and garnetiferous amphibolitic conglomerate with cobbles of unit 1 tonalite
-whole outcrop has a rusty gossan appearance
SAMPLE
1 -conglomerate
2 -silty amphibole-carbonate rock
3 -ultramafic sediment
4 -silty amphibolite with pale green amphibole
5 -contact between ultramafic and sandy unit
-looks to be a zone of altered mafic seds at the regolith contact-CGLM to north, mafic sediments to south
PHOTOS
1&2 -ultramafic sed. against silty calcareous sed.
3 -conglomerate with TNLT cobbles
4 -radial amphibole fibres in silty sed.

Manitoba Geological Survey, 2017