Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6513
EASTING 584530 NORTHING 6065604 ZONE 14 DATUM NAD83
Date of mapping 08/02/1986

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
inclusion layering | 68 | 81 |

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 61 | 82 |

-this outcrop suitable for bulk sampling of pseudotachylite

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
augened
leucocratic
Field Description:

-highly sheared buff weathering schlieric GRDR
-extensive epiotization of plagioclae
-equigranular with augen of old buff leuco pegmatite lit
-locally mylonitic with thick pseudotachylite seams (see sample 1b)
-Quartz 25 % somewhat simular to WJC but not the same unit

Minerals of Note
Mineral | Abundance (%)
epidote

Rock Number: 2

Rock Type: amphibolite
Descriptors:
layered
hornblende-epidote bearing
Field Description:

-5 % inclusion of sheared ampb probably pillow basalt material
-note inclusions lie in zones 1 to 10 m wide following the old 270 degree trend and cross sheared by 060 degrees

Manitoba Geological Survey, 2017