Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6360
EASTING 559721 NORTHING 6043900 ZONE 14 DATUM NAD83
Date of mapping 07/13/1986

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 78 | 74 |
fault | 212 | 67 | dextral

PETROLOGIC DATA

Rock Number: 1

Rock Type: tonalite
Descriptors:
augened
leucocratic
Field Description:

-light grey weathering with grey-white fresh surface
-sheared megacrystic TNLT
-possible 9d but looks a little whit
-megas are augened white feldspar with BO inclusions and range up to 4 cm
-ampb inclusions decrease to north

Rock Number: 2

Rock Type: amphibolite
Descriptors:
mixture of phases present
Field Description:

-40% of exposure on south side of outcrop decreasing to 5 % on north is inclusions of various size and composition including mafic volcanics, amphibolitic sediments and coarse hornblende metagabbro
-one inclusion of ultramafic black hornblende rock that may have been a pyroxenite

Manitoba Geological Survey, 2017