Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5012
EASTING   567539     NORTHING   6044306     ZONE   14     DATUM   NAD83
Date of mapping    06/18/1983

STRUCTURAL DATA

Dikes and Sills:
Rock Number Type Width (m) Strike Dip
0 aplite dike or vein 0.00 76 43

Linear Structures
Type Plunge Azimuth
mineral lineation 32 216

-several distorted pegmatite dikes with shear textures; widths from 5 to 20 cm
-late aplite/pegmatites - non-deformed but with lineated contacts

PETROLOGIC DATA

Rock Number: 1

Rock Type: tonalite
Descriptors:
gneissic
leucocratic
grey
schlieric or schlieren present

Field Description:

-usual grey old tonalite gneiss schlieric, highly contorted

Rock Number: 2

Rock Type: granodiorite
Descriptors:
massive
biotite

Field Description:

-same grey granodiorite < 1/2 % plagioclase phenocrysts

Textural Features
Type Mineral Min. Size Max. Size Abundance (%) Unit
phenocryst plagioclase 0.0 0.0


Manitoba Geological Survey, 2017