Contributions to the age of the Gaspé sandstone and Gaspé limestone
- 1 January 1967
- report
- Published by Natural Resources Canada/CMSS/Information Management
Abstract
Restudy of the fauna of the lower part of the Gaspe Sandstone Group shows that at least the lower one-fifth (approximately 2, 000 feet of strata) of this group is Lower Devonian. In eastern Gaspe, the York River Formation is of Etymothyris zone age: in western Gaspe, the 'Heppel' Formation is of Etymothyris and Amphigenia zone age. The brachiopod genera Rhenorensselaeria, Prionothyris and Globithyris are present in the Gaspe Sandstone. These genera are known elsewhere only from the upper part of the Lower Devonian. "Spirifer" mucronatus var. posterus Kindle non Hall and Clarke, previously recorded from the 'Heppel' Formation, is redetermined as Howellella aff. H. nictavensis (Dawson), a species present in the Lower Devonian of Nova Scotia and in the Lower Devonian Tomhegan Formation of Maine. A gastropod from the Gaspe Sandstone, Nylanderina n. genus, occurs in the Lower Devonian Tomhegan Formation, and in the Lower Devonian beds near Highland Mills, New York. The Gaspe Sandstone Group is conformably underlain by the Gaspe Limestone Group. The age of the upper part of the Gaspe Limestone Group (Grande Greve Formation) is also Lower Devonian. The occurrence of Monograptus aequabilis (Pribyl, 1941) in a lower part of the Gaspe Limestone Group (Cape Bon Ami Formation) suggests that the base of the Gaspe Limestone Group lies near the Silurian-Devonian boundary. Monograptus aequabilis indicates the presence of the M. uniformis zone of Early Gedinnian age.This publication has 0 references indexed in Scilit: