Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5601
EASTING   581081     NORTHING   6063824     ZONE   14     DATUM   NAD83
Date of mapping    07/16/1984

STRUCTURAL DATA

Layering:
Layering type Strike Dip top Direction
bedding 287 69 N

Planar Structures:
Structure type Strike Dip Separation
fault 256 84

PETROLOGIC DATA

Rock Number: 1

Rock Type: greywacke
Descriptors:
laminated
mafic

Field Description:

-greenish brown weathering finely bedded greywacke
-hornblende(?) rich volcanic derived material
-laminations comprise 5 to 15 mm graded beds - not turbidite type
-interbedded with 1 to 2 layers of massive lithic wacke that weathers a brown - ochre colour

SAMPLE A: greywacke (lamin)
SAMPLE B: lithic wacke

Minerals of Note
Mineral Abundance (%)
garnet

Rock Number: 2

Rock Type: greywacke
Descriptors:
massive
volcanic derived

Field Description:

-funny yellow and brown unit above the greywackes
-featureless except for yellow ochre alteration(?) lines in greenish brown weathering rock
-layer is 3 to 4 m thick
-could be a greywacke or a flow

Rock Number: 3

Rock Type: basalt
Descriptors:
BREC

Field Description:

-same dd weathering rubbly mafic with relief weathering by CC-CL veins producing a breccia like look
-same as station 5600
-lies above rock 1 and 2


Manitoba Geological Survey, 2017