Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 83
STATION 5115
EASTING 575963
NORTHING 6043141
ZONE 14
DATUM NAD83
Date of mapping 07/09/1983
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
gneissosity | 59 | 33 |
-estimate of hanging wall contact 120/23
-contact not exposed
-footwall contact 262/78 (estimate)
PETROLOGIC DATA
Rock Number: 1
-highly distorted augen granodiorite base with numerous irreguluar grey granodiorite layers
-highly schlieric but with few recognizable inclusions
Rock Number: 2
-Good Big Molson!!
-highly irregular attitudes in cumulus layering.
-some may be flow induced banding
-distortions of layers may be caused by thermal sag.
-there is no leuco gabbro phase
-everything appears to be 2-pyroxene gabbro with abundant magnetite
-because of the divergent contact this may represent on apical portion of a canoe shaped dike
-the footwall contact has a very thin 2 mm chill on an odd-textured (possibly lamprophyric) quartz bearing rock--see samples
Manitoba Geological Survey, 2017