Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 84
STATION 5640
EASTING 569858
NORTHING 6048790
ZONE 14
DATUM NAD83
Date of mapping 07/23/1984
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
cataclastic foliation | 266 | 78 |
-outcrop appears to be transition from the mafic volcanoclastic into interbedded feldspathic arkose and hornblende greywacke
-the beds were probably 10 to 20 cm thick and at a high angle to the present foliation, prob. near 320 degrees
PETROLOGIC DATA
Rock Number: 1
-homogeneous grey psammitic HB GRCK, no internal bedding features preserved, foliation has torn the interbedded sequence and reorientated beds so that what exists now is a highly foliated, patchy mixture of felsic and mafic seds.
Mineral | Abundance (%) |
---|
biotite |
chlorite |
tourmaline |
Rock Number: 2
-beige to white weathering, slightly buggy feldspar rich arkose, was probably originally CO3 cemented
-all that remains is lenticular patches and felsic streaks in the greywacke
Mineral | Abundance (%) |
---|
hornblende |
Manitoba Geological Survey, 2017