The Rupelo Formation is an Early Cretaceous (Berriasian) geologic formation in the Burgos Province of Castile and León in northern Spain. The formation crops out near the municipality Mambrillas de Lara in the northwesternmost part of the Cameros Basin in the Sierra de la Demanda.[1]
| Rupelo Formation | |
|---|---|
| Stratigraphic range: Berriasian ~ | |
 La Pedraja tracksite in Mambrillas de Lara | |
| Type | Geological formation |
| Unit of | Tierra de Lara Group |
| Underlies | Valdeprado Formation |
| Overlies | Oncala Group Huérteles Formation |
| Area | ~1 km2 (0.39 sq mi) |
| Thickness | ~2 m (6.6 ft) |
| Lithology | |
| Primary | Mudstone |
| Other | Marl |
| Location | |
| Coordinates | 42°06′N 3°30′W / 42.1°N 3.5°W |
| Approximate paleocoordinates | 33°42′N 5°54′E / 33.7°N 5.9°E |
| Region | Mambrillas de Lara, Burgos, Castile and León |
| Country |  Spain |
| Extent | Restricted to northwesternmost Cameros Basin; Sierra de la Demanda |
| Type section | |
| Named for | Rupelo |
  Rupelo Formation (Spain)  Rupelo Formation (Castile and León) | |
Fossil sauropod tracks have been reported from the formation.[2] The formation was deposited under lacustrine conditions in a shallow carbonate lake, with some exposure events in the sedimentary sequence. Imprints of dinosaurs were made in carbonate mud, after they were infilled with marl. Dinosaur tracks have been assigned to sauropods, theropods and ornithopods.[3] An indeterminate titanosauriform sauropod humerus (MDS-VPCR, 214) has been found in the formation.[4]
The municipality of Mambrillas de Lara has created a dinosaur park.
Correlation
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See also
editReferences
edit- ^ González Acebrón et al., 2010, p.89
- ^ Weishampel, et al., 2004, pp. 517-607
- ^ Rupelo Formation at Fossilworks.org
- ^ Torcida Fernández-Baldor, F.; Canudo, J. I.; Huerta, P. (2020-12-01). "New data on sauropod palaeobiodiversity at the Jurassic-Cretaceous transition of Spain(Burgos)". Journal of Iberian Geology. 46 (4): 351–362. Bibcode:2020JIbG...46..351T. doi:10.1007/s41513-020-00145-w. ISSN 1886-7995. S2CID 227258628.
Bibliography
edit- González Acebrón, L.; Arribas, J.; Mas, R. (2010), "Sand provenance and implications for paleodrainage in a rifted basin: the Tera Group (N. Spain)", Journal of Iberian Geology, 36: 87–106, retrieved 2019-10-10
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
Further reading
edit- Platt, N.H.; Meyer, C.A. (1991), "Dinosaur footprints from the Lower Cretaceous of northern Spain: their sedimentological and palaeoecological context", Palaeogeography, Palaeoclimatology, Palaeoecology, 86 (3–4): 321–333, Bibcode:1991PPP....85..321P, doi:10.1016/0031-0182(91)90165-N