Ontario Geological Survey
Permanent Link to this Record:
MDI52E15SE00002
| Record Name(s) | Bypass Gneiss - 1987 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1987-May-15 |
| Date Last Modified | 2022-Mar-30 |
| Created By | |
| Revised By |
Primary Commodities: Aggregate
Township or Area: Pellatt
Latitude: 49° 45' 21.08" Longitude: -94° 38' 32.69"
UTM Zone: 15 Easting: 381700.647 Northing: 5512780.66 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52E15SE
Point Location Description: Transfer
Location Method: Conversion from MDI
Province: Superior
Subprovince: English River
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 |
|---|
Mar 30, 2022 (Therese Pettigrew) - The area is underlain by gneissic, felsic to intermediate supracrustal rocks of the English River Subprovince. The gneissic rocks are exposed in a series of road cuts along the Highway 17 Kenora Bypass to the east of the CPR crossing. The gneiss has a strong uniform gneissic layering trending 085 / 75 degrees N. The layers are 3 to 15 mm in thickness and have sharp interlayer contacts. The gneiss is light grey to pink in colour; the pink variety makes up 25 to 30% of the total exposure. Occasional pegmatite or amphibolite layers are present. Wide spaced (15 m) joints trending 010 degrees are present. There are a few fractures parallel to the gneissosity. Sheeting is l to 2 m in thickness. Feldspar megacrysts are present within the leucocratic layers; in places they are up to l cm in width. Uniform gneiss is exposed for 800 m along the highway; its strike length is undetermined. The pink material is restricted to the south 500 m of the exposure. To the north the gneissosity is less uniform and more pegmatite dikes and amphibolite bodies are present. There has been no recorded quarrying of this rock (Storey, 1986).
MonoMap - Preliminary geological synthesis of the English River Subprovince, northwestern Ontario and its bearing upon mineral exploration
Publication Number: MP072 Page: 38,39,42 Date: 1978
Author: Breaks F.W., Bond W.D., Stone D.
Publisher Name: Ontario Geological Survey
Location:
Mono - Building and ornamental stone inventory in the districts of Kenora and Rainy River
Publication Number: MDC027 Page: 47 Date: 1986
Author: Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
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