Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6112
EASTING   563272     NORTHING   6043974     ZONE   14     DATUM   NAD83
Date of mapping    06/13/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 18 57

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
porphyroblastic
leucocratic

Field Description:

-quartz 35%
-I eat crow now-this has to be a porphyritic rock-around 6 % MC megacrysts in a GRDR - TNLT matrix
-tends to be somewhat seriate
-megas range from 5 mm to 5 cm x 4 cm and rare 10 cm x 1.5 cm laths
-definitly not peg. augens here!
-we should do some extensive chem. here

Rock Number: 2

Rock Type: amphibolite
Descriptors:
layered
hornblende - biotite bearing

Field Description:

-streaky partially assimilated inclusion-could be mafic wacke (or anything else) 30x100 cm


Manitoba Geological Survey, 2017