Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5449
EASTING   576279     NORTHING   6060748     ZONE   14     DATUM   NAD83
Date of mapping    06/22/1984

STRUCTURAL DATA

-no location -- general description of north shore of Beryl Island

PETROLOGIC DATA

Rock Number: 1

Rock Type: conglomerate

Field Description:

-walked from volcanics on NE tip along N shore
-entire shore is tighly folded
-volcanics seem to be Z folded back into lake and the mafic conglomerate along shore goes into lake
-sorted conglomerate unit is much abbreviated, then the festoon sandstone follows the shore often folded in with trough and cross bed unit for half the length of the island
-trough and cross bed unit occured along rest of shore
-whole shore of island has numerous mylonites axial planar to folds
-the dike seem to occupy the mylonite zones and are rodded in the axial plunge of the Z assymetric folds along the shore (see field notes for brief diagram)


Manitoba Geological Survey, 2017