Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5452
EASTING 572414 NORTHING 6055164 ZONE 14 DATUM NAD83
Date of mapping 06/23/1984

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
bedding | 194 | 85 |

Minor Folds
Type | Symmetry | Strike | Dip | Plunge | Azimuth
similar fold | S | 209 | 0 | 45 | 22

-several general photos to end roll (one photo 2nd or 3rd from end will be black)
-three photos an new roll of Bouma beds
-first sequence has several calc-silicate layers and boudins

PETROLOGIC DATA

Rock Number: 1

Rock Type: greywacke
Descriptors:
layered
muscovite - plagioclase bearing
Field Description:

-sample a--calcsilicate layer B should be then sectioned-either a Bouma E shale or mylonite (it is in 2nd photo sequence and looks like shale)
-good Burnt wood style turbidites
-Bouma ABE sequences, calcsilicate horizons, psammite and muscovite blastic pelite layers
-large scale folding with disharmonic parasites and abundant ptygmatic folding of injected lit

Rock Number: 2

Rock Type: granodiorite
Descriptors:
pegmatitic
Field Description:

-variable 5 to 25 % granodiorite and pegmatitic grandiorite injection
-tourmaline rich especially pegmatite material
-tourmaline metasomatism of greywacke on contacts

Minerals of Note
Mineral | Abundance (%)
tourmaline
garnet
biotite

Manitoba Geological Survey, 2017