Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5067
EASTING 571084 NORTHING 6038204 ZONE 14 DATUM NAD83
Date of mapping 06/25/1983

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 56 | 32 |
fault | 241 | 51 |

Fault is a 1.5 metre ultramylonite zone

PETROLOGIC DATA

Rock Number: 1

Rock Type: quartz diorite
Descriptors:
cataclastic
inclusions present
mixture of phases present
agmatite
Field Description:

-Resembles the previous hornblende granodiorite but with very little quartz and high mafic content.
-Numerous inclusions including mafic supracrustals and leucocratic granodiorite to tonalite.
-Extreme cataclasis due to fault has agmatized everything in a homogeneous grey cataclasite matrix that looks to be largly derived from quartz diorite

Textural Features
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit
mafic mineral | hornblende | 0.0 | 0.0 | 18.0 | mm

Manitoba Geological Survey, 2017