Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5093
EASTING 573003 NORTHING 6039762 ZONE 14 DATUM NAD83
Date of mapping 07/07/1983

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
metamorphic layering | 75 | 83 |

Planar Structures:
Structure type | Strike | Dip | Separation
gneissosity | 75 | 83 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: amphibolite
Descriptors:
layered
hornblende - garnet bearing
Field Description:

-highly variable section of amphibolite ranging from massive diorite gneiss (1A) to mafic amphibolite (basaltic) (1B) to laminated mafic wacke (1C)
-probably a volcanic derived raft complex

Rock Number: 2

Rock Type: gneiss
Descriptors:
layered
leucocratic
Field Description:

-several metres of buff to white weathering felsic(?) sediment or highly 'granitized' bleached greywacke
-has odd texture that makes it look like psammite/semipelite variations
-conservatively it is ortho gneiss but compositional variation and proximately to mafic sediments suggests it is leucocratic, silicic sediment.

Minerals of Note
Mineral | Abundance (%)
garnet

Manitoba Geological Survey, 2017