Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 84
STATION 5596
EASTING 580392
NORTHING 6062965
ZONE 14
DATUM NAD83
Date of mapping 07/15/1984
STRUCTURAL DATA
Layering type | Strike | Dip | top Direction |
---|---|---|---|
bedding | 281 | 82 | N |
-contact between silts and volcanics
-once again units interlayered at contact and extensive gossaning occurs
**volcanics (basalts) overlie felsic seds**
PETROLOGIC DATA
Rock Number: 1
-extensive laminated mafic mudstone units
PHOTOS
1 -general view SLSN
2 -close-up of graded scour and rip up
3 -lithic arenite with felsic fragments
Mineral | Abundance (%) |
---|
garnet |
Rock Number: 2
-just below contact is a coarser sand size unit with abundant blue black quartz eyes
-all siltstone checked for quartz eyes all day but they are to fine and sorted
-this is the first unit coarser enough to retain phenocryst fragments and it does!
-it is also visable a lithic arenite with the liths. of rhyolite composition
-fragments are up to 3 to 4 mm size (see photo 3)
SAMPLE
A -arenite with quartz eyes
B -gossan at contact
Manitoba Geological Survey, 2017