Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 83
STATION 5088
EASTING 568216
NORTHING 6043826
ZONE 14
DATUM NAD83
Date of mapping 07/04/1983
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 76 | 54 |
PETROLOGIC DATA
Rock Number: 1
-variety of complex layered and massive amphibolite, some layers highly mafic, massive, and featureless
-Other layers finely laminated, definately sedimentary in appearance. Abundant calc-silicate pods and epidote/carbonate masses, highly boudinaged. Average. composition is between diorite and gabbro. Some layers have dissected irregular diopsidic layers remniscent of highly deformed pillow salvages
Mineral | Abundance (%) |
---|
garnet |
Rock Number: 2
-probable high level mafic dike, around 1.8 m. across. Occurs as a series of disjointed boudins, several metres in length.
-clinopyroxene pseudomorphed by dark greenish black amphibolite
Rock Number: 3
-large 1 to 3 m. sills and stockwork of beige granite with clotted pegmatite
-garnet ubiquitous, biotite major mafic, blocky k-feldspars are blue grey mottled to white.
Manitoba Geological Survey, 2017