Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5413
EASTING 574947 NORTHING 6059577 ZONE 14 DATUM NAD83
Date of mapping 06/15/1984

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
bedding | 215 | 83 | S

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 315 | 83 |

-photos of cross beds and conglomerate

PETROLOGIC DATA

Rock Number: 1

Rock Type: sandstone
Descriptors:
crossbedded
lithic
Field Description:

-normal looking sequence of trough crossbedded sands and channel conglomerates that occurs along this north shore
-nothing unusual; bedding well defined and parallel schistocity
-a few small faults generally parallel bedding/foliation but occasionally wander off at low angles

Rock Number: 2

Rock Type: pegmatite
Descriptors:
granitic
Field Description:

-2 parallel dikes, one 2.5 m decreasing to 35 cm at NW end of outcrop
-no beryl visible, just muscovite, 2 feldspar, quartz, garnet, tourmaline
-second dike has albitic aplite core-varies from 30 to 80 cm, tourmalinized margins, blue apatite, pale green beryl
-in one spot in transected by low angle fault
-in general is constrained to the foliation plane

Minerals of Note
Mineral | Abundance (%)
beryl
tourmaline
muscovite

Manitoba Geological Survey, 2017