Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 86
STATION 6348
EASTING 570906
NORTHING 6049990
ZONE 14
DATUM NAD83
Date of mapping 07/12/1986
STRUCTURAL DATA
Layering type | Strike | Dip | top Direction |
---|---|---|---|
bedding | 116 | 78 | N |
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 116 | 78 |
Type | Plunge | Azimuth |
---|---|---|
boudin axis | 83 | 55 |
-SAMPLE
1A QZ psammite
1B feldspathic GRCK
1C calc-silicate
PETROLOGIC DATA
Rock Number: 1
-light grey weathering, psammitic greywacke
-bedding is 5 to 15 cm commonly graded with rare thin cross beds or ripples (too deformed to tell morphology)
-numerous 5 to 40 cm calc. silicate layers comprising of massive EP cores surrounded by green fibrous ampb and fine plag.
-several beds have an unusual grey blastic feldspar with BP inclusions
-feldspars are rectangular and occur only in MV-bearing beds.
-in several locations these blasts segregate into small masses of leucosome
-the grade does not appear high enough to be amobilisitate, so probably related to fluid flushing from pegmatitic injections
Mineral | Abundance (%) |
---|
muscovite |
Rock Number: 2
-50% of exposure is massive dikes of coarse pegs
-there is considerable comp and text. variation, with some dikes having coarse masses of BO and traces of Gr, while others have podiform aggregates of quartz, microcline, MV and schorl?? with minor red GR
-MC are non-graphic
Manitoba Geological Survey, 2017