Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 85
STATION 6075
EASTING 0
NORTHING 0
ZONE 14
DATUM NAD83
Date of mapping 06/20/1985
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
cataclastic foliation | 59 | 65 | |
fault | 308 | 68 |
-2 m fault/breccia/mylonite
PETROLOGIC DATA
Rock Number: 1
-Classic Whiskey Jack GRDR with grey-white mottled feldspars
-very unusual situation -- there are zones of light shearing with a few relatively undeformed inclusions of volcanic, seds, and ULMF
-these 2 to 10 m wide and are separated by zones of intense cataclastis that are packed with mafic and ultramafic inclusions and are extensively augened
-these are offset by late faults (mylonite/breccia zones up to 2 m wide-see measurements)
-whether the inclusion rich zones are weak zones that shear preferentially or the inclusion rich material represents slices several metres wide that are faulted in from depth is unknown
Manitoba Geological Survey, 2017