Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6300
EASTING   570214     NORTHING   6048099     ZONE   14     DATUM   NAD83
Date of mapping    07/07/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 276 74

PETROLOGIC DATA

Rock Number: 1

Rock Type: sandstone
Descriptors:
cataclastic
mafic

Field Description:

-grey weathering with dark grey fresh surface
-highly deformed mafic greywacke with some ill defined layers of lithic wacke
-rare coarse sand horizons a few cm's thick
-bedding may have been in a general WS direction but is so chapped up in the fol. it is impossible to be sure
-outcrop 70% homo-equi wacke, QZ rich coarse sand layers
-Sample A wacke
-Sample B lithic wacke

Minerals of Note
Mineral Abundance (%)
hornblende
biotite

Rock Number: 2

Rock Type: diabase
Descriptors:
schistose
hornblende - biotite bearing

Field Description:

-3 dikes in the fol. plane of old deformed and metamorphosed fine grained mafic intrusive
-cuts the early deformation in the wackes but is deforme
-not Molson--part of Pipestone Group


Manitoba Geological Survey, 2017