Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 86
STATION 6411
EASTING 0
NORTHING 0
ZONE 14
DATUM NAD83
Date of mapping 07/20/1986
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 46 | 0 |
-small shoreline outcrop 3x10 m
PHOTOS
1,2,4 -contact of mega gabbro and leuco gabbro
3 -mega gabbro
PETROLOGIC DATA
Rock Number: 1
-baseball gabbro
-white plag. megacrysts in 3 populations of sizes- around 13 cm, around 6 cm, and around 1 cm in a matrix of coarse (3-6 mm) black hornblende with minor BO alteration
-has a layered nature of baseball gabbro >2m separated by 50 cm of black and white leucogabbro "leopard rock"
-plag. looks to be recrystallized mozaic though carlsbad twins are preserved locally
Manitoba Geological Survey, 2017