Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6562
EASTING 573404 NORTHING 6041633 ZONE 14 DATUM NAD83
Date of mapping 08/08/1986

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 56 | 77 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: multi-component schlieric gneiss
Field Description:

-highly schleric WJC GRDR containg large numer of small highly flattened mafic to ultramafic inclusions
-zones of extensive assimilation of mafic inclusions, greatly mafic content of GRDR
-GRDR contains 5 to 15 % of old coarse grained pegmatitic GRDR "lit"
-these are highly deformed and augened in cata. fabric
-no evidence of CWB intrusion
-the only young intrusives are pink coarse moderatly zoned BO pegmatites that cross cut the old fabric but was slightly sheared later
-some suggestion of a similar relationship of mafic inclusions to the stylengted?? on Kisskatoba Su(?) zones rick in Gabbro
-inclusions are surrounded by coarse pegmatitic white leuco-BRDR
-this suggest the mafic complex was intruded in WJC
-so far, there is no indication of anorthosite inclusions
-some indication of seriate and/or porphyritic nature to the GRDR

Manitoba Geological Survey, 2017