Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5095
EASTING   573397     NORTHING   6039825     ZONE   14     DATUM   NAD83
Date of mapping    07/07/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 72 80

-outcrop cut by several lightly sheared to severly deformed pegmatites
-well developed quartz cores but plagioclase is dominant in intermediate zones

PETROLOGIC DATA

Rock Number: 1

Rock Type: amphibolite
Descriptors:
pillowed
volcanic derived

Field Description:

-sequence of massive and pillowed flows
-selvages totally disrupted, contorted, all that remains are fragments of hornblendic matierial and scattered diopside (epidote) pods

Rock Number: 2

Rock Type: granite
Descriptors:
massive
leucocratic

Field Description:

Dike
-buff weathering unit with pink and grey fresh surface
-3 m. dikes cutting volcanic. but extensively boudinaged

Textural Features
Type Mineral Min. Size Max. Size Abundance (%) Unit
groundmass grainsize 0.0 5.0 mm
mafic mineral biotite 0.0 0.0 2.0 %


Manitoba Geological Survey, 2017