Ontario Geological Survey
Permanent Link to this Record:
MDI31C05NE00070
| Record Name(s) | Section C-6 - 1993 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1993-Apr-19 |
| Date Last Modified | 2023-Apr-20 |
| Created By | |
| Revised By |
Primary Commodities: Limestone (Building Stone)
Secondary Commodities: Chert, Fossil Specimen
Township or Area: Marmora
Latitude: 44° 28' 50.38" Longitude: -77° 41' 12.78"
UTM Zone: 18 Easting: 286326.647 Northing: 4928772.762 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31C05NE
Point Location Description: Point just west of Marmora.
Location Method: Conversion from MDI
Access Description: Roadcut on Hwy 7, immediately west of the village of Marmora.
Province: Paleozoic and Mesozoic Basins
Geological Age: Paleozoic
Dec 07, 2005 (D Laidlaw) - Bobcaygeon Formation: 0.55 m. Gull River Formation: 18.74 m.
| Rock Type | Rank | Composition | Texture | Relationship | Limestone | 1 | Bedded | Host |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chert | Economic | Ore |
Apr 20, 2023 (Mateo Dorado-Troughton) - A horizon bearing nodular black chert can be found within the Bobcaygeon formation at the west end of the roadcut. This chert is known as Lower Bobcaygeon chert or as Marmora chert.
| Rank | Classification |
|---|---|
| 1 | Sedimentary |
Date: Apr 19, 2023
Geologist: Mateo Dorado-Troughton
Notes: Roadcut ANSI site visit in collaboration with MTO road scaling. Samples were collected of Bobcaygeon formation black chert nodules and tabulate coral fossils. The Marmora west road cut shows a 20m section of Upper and Middle Member Gull River formation overlain by 0.6m of the Lower Member of the Bobcaygeon Formation. This section is reported to have a variety of sedimentary and biogenic structures such as mudcracks, "birds-eyes", intraclasts, burrows and discontinuity surfaces.
Publication - Limestones of Canada, their occurrence and characteristics, part IV, Ontario
Publication Number: CMB Pub 781 Page: 100 Date: 1938
Author: Goudge, M F
Publisher Name: Canada Mines Branch
Location: https://doi.org/10.4095/75823
Mono - Preliminary report on the Paleozoic geology of the Peterborough-Campbellford area, southern Ontario
Publication Number: OFR5331 Page: 63-5 Date: 1981
Author: Carson D.M.
Publisher Name: Ontario Geological Survey
Location:
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