Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5564
EASTING 574743 NORTHING 6046624 ZONE 14 DATUM NAD83
Date of mapping 07/08/1984

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 288 | 48 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: feldspar porphyry
Descriptors:
massive
biotite-microcline bearing
Field Description:

-charcoal grey porphyry with MC phenocrysts upto 8 mm
-phenos euhedral to subhedral
-fabric less intense so phenos aren't augened
-contradictory evidence for age relationship-FDPP seems to both intrude and be included in GRDR
-my gut feeling is that the fabric is far less intense in the FPPP than the GRDR so it intrudes the GRDR but later cataclasis scrambles the contact relations

Rock Number: 2

Rock Type: granodiorite
Descriptors:
cataclastic
biotite - chlorite bearing
Field Description:

-as previous station except possibly less mafic-texturally they look the same
-probably as inclusions in FPPP

Manitoba Geological Survey, 2017