Grand-Auverné Formation
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The Grand Auverné Formation is a geologic formation in France. It preserves fossils dating back to the Darriwilian to Sandbian (Dobrotivian in the regional stratigraphy) stages of the Ordovician period.[1]
Quick Facts Type, Sub-units ...
Grand Auverné Formation | |
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Stratigraphic range: Darriwilian-Sandbian (Dobrotivian) ~461–457.5 Ma | |
Type | Formation |
Sub-units | Schistes d'Angers Member |
Lithology | |
Primary | Organic shale |
Other | Sand and pyrite |
Location | |
Coordinates | 47.0°N 1.0°W / 47.0; -1.0 |
Approximate paleocoordinates | 68.2°S 76.0°E / -68.2; 76.0 |
Region | Maine-et-Loire |
Country | ![]() |
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