Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5500
EASTING   577022     NORTHING   6042500     ZONE   14     DATUM   NAD83
Date of mapping    06/29/1984

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 271 37

-extreme flattening and cataclasis has reorientated all layering in the foliation plane
-PHOTO 1 contact between massive and pillowed flow
-PHOTO 2 typical of pillowed flow and epidosites

PETROLOGIC DATA

Rock Number: 1

Rock Type: basalt

Field Description:

-entire N part of this island is a sequence of pillowed 3 massive basaltic flows
-there appear to be minor laminated interflow sediments although extreme deformation make 6 observations uncertain
-all that remains of pillow structure are streaked out selvages and irregular epidosite cores
-there is minor quartz veining and is highly devormed and strung out in fol. plane

SAMPLE A -pillowed flow
SAMPLE B -massive flow
PHOTO 3 -Carol as scale--contact of basalts and GRDR-photo taken looking 300 degrees, approx. attitude of contact 240/44


Manitoba Geological Survey, 2017