Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 85 STATION 6070
EASTING 575217 NORTHING 6043769 ZONE 14 DATUM NAD83
Date of mapping 06/20/1985

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
bedding | 34 | 33 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: amphibolite
Descriptors:
layered
sedimentary
Field Description:

-sandy textured mafic wacke with a knotted HB-PG texture and feldspathic layers reminiscent of deformed pillows, but there are areas of preserved cm-scale bedding plus interbeds of rock 2 so it is probably a volcanic wacke

Minerals of Note
Mineral | Abundance (%)
garnet

Rock Number: 2

Rock Type: sandstone
Descriptors:
layered
feldspathic
Field Description:

-2 m bed of cm laminated beige-tuff weathering feldspathic sandstone
-HB main mafic - content varies from 2 % to 15 % between layers although mafic layers are < 1 cm
-layering in both units parallel

Minerals of Note
Mineral | Abundance (%)
garnet
hornblende

Rock Number: 3

Rock Type: granite
Descriptors:
massive
leucocratic
Field Description:

-massive 2 to 4 m sills
-as at previous
-moderate buadinage and thinner sills

Manitoba Geological Survey, 2017