Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6352
EASTING 570062 NORTHING 6049963 ZONE 14 DATUM NAD83
Date of mapping 07/12/1986

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 96 | 89 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: sandstone
Descriptors:
laminated
lithic
Field Description:

-light grey, finely bedded on a 1 to 10 cm scale
-many beds are graded from coarse sand and granular size lithic fragments at base to fine sized at top
-mm scale
-parallel lamination is common in non-graded units
-in general, the unit is quite feldspathic, with quartz around 35%
-deformation makes topping direction variable
-appears to be tight isoclinal folding

Rock Number: 2

Rock Type: pegmatite
Field Description:

-1.5 metre dike of more normal composition comprised of coarse graphic MC and grey-white quartz
-abundant very coarse MV in primary assemblege as well as finer grained yellowish-green MV abundantly introduced as a secondary mineral during late migmatite shearing
-shear planes tend to reflect augen like structures

Manitoba Geological Survey, 2017