Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5485
EASTING 576314 NORTHING 6041167 ZONE 14 DATUM NAD83
Date of mapping 06/28/1984

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 58 | 61 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: gabbro
Field Description:

-same gabbro occurs since last station with varying degree of intrusion by augen granodiorite and a more quartz rich variety (rock 2)
-also numerous 2 feld, muscovite pegmatites
-in general map unit should be gabbro and intrusives
-at the back of the bay near the road are layers up to 10 m thick of anorthosite (samples A & B) interlayered with "leopard rock" (sample C)
-most is massive anothosite but there are some narrow (sheared) zones of ovoid gabbro and football anorthosite

Rock Number: 2

Rock Type: granodiorite
Descriptors:
quartz-biotite
Field Description:

-pink and grey quartz rich non-porphyritic grandiorite
-varying degrees of cataclasis throughout all units
-one raft of what looks like volcanic or volcanoclastic rock in granodiorite with gabbro on both sides

Manitoba Geological Survey, 2017