Calcare di Sogno | |
---|---|
Stratigraphic range: Lower Toarcian-Late Bajocian ~ | |
Type | Geological formation |
Sub-units | Livello a Pesci |
Underlies | Formazione delle Radiolariti |
Overlies | Calcare di Domaro, Calcare di Morbio, Unnamed limestones[note 1] |
Thickness | Typically 120–140 m (390–460 ft) East and west 70–100 m (230–330 ft) |
Lithology | |
Primary | Marl, marly limestone & abundance of clay Secondary: Alternation of marly limestones and marls, presence of graded Chalcudites |
Other | Limestones with nodules of flint & subordinate marls |
Location | |
Coordinates | 45°48′N 9°18′E / 45.8°N 9.3°E |
Approximate paleocoordinates | 33°24′N 18°54′E / 33.4°N 18.9°E |
Region | Lecco Province |
Country | Italy |
Type section | |
Named for | Sogno |
Named by | Gaetani & Poliani |
The Calcare di Sogno ("Sogno Limestone"; also known as the Sogno Formation) is a geological formation in Italy, dated to roughly between 182-169 million years ago and covering the Lower Toarcian-Late Bajocian stagess of the Jurassic Period in the Mesozoic Era.[1] Thallatosuchian remains are known from the formation, as well fishes and other taxa.[2]
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