Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6311
EASTING 566355 NORTHING 6048750 ZONE 14 DATUM NAD83
Date of mapping 07/08/1986

STRUCTURAL DATA

Minor Folds
Type | Symmetry | Strike | Dip | Plunge | Azimuth
similar fold | S | 224 | 90 | 30 | 24

PETROLOGIC DATA

Rock Number: 1

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

-layered sequence of mafic sed. largly of HBGT basaltic comp. with interbeds of light grey to brown coarse feldspathic sand or lithic grey wacke
-majority of outcrop is cm-laminated HB rich volcanic sed.
-appears to be massivly bedded unit, on the order of 2 or greater m. and fine continual lamination
-contains sporadic GT and intruded by thin quartz-carbonate viens
-interbeds are highly garnetiferous, HB bearing feldspathic sands.
-irregular layers of black 'vuggy' HD-plag., rocks
-outcrop intensly folded by series of shallow plunging upright S-folds
-place majority of SS structurally underneath the layered amphibole
-axial planes have been intruded?? by mag-peristerite pegmatites
SAMPLE A laminated ampb
SAMPLE B grey feldspathic SS
SAMPLE C mass. ampb
SAMPLE D per. pegmatite

Manitoba Geological Survey, 2017