Chorrillo Formation
The Chorrillo Formation, also named as Chorillo Formation,[1] is a Maastrichtian geologic formation in southern Patagonia, Argentina. The formation is more than 50 metres (160 ft) thick and underlies the Calafate Formation and rests on top of the La Irene Formation.[2]
| Chorrillo Formation Stratigraphic range: Maastrichtian | |
|---|---|
| Type | Geological formation |
| Underlies | Calafate Formation |
| Overlies | La Irene Formation |
| Thickness | >50 m (160 ft) |
| Lithology | |
| Primary | Claystone |
| Location | |
| Location | Patagonia |
| Coordinates | 49.9°S 72.5°W |
| Approximate paleocoordinates | 51.8°S 62.2°W |
| Region | Santa Cruz Province |
| Country |  |
| Extent | Southeast of Viedma Lake North of Argentino Lake Austral Basin |
| Type section | |
| Named by | Arbe & Hechem |
| Year defined | 1984 |
  Chorrillo Formation (Argentina) | |
Fossils
The elasmarian ornithopod Isasicursor and the giant titanosaur Nullotitan have been recovered from the Chorrillo Formation, along with the ornithuran bird Kookne and fossils of anurans, lizards, snakes, noasaurids, megaraptorids, and turtles.[3]
gollark: Another cheapish way is to toss mobs up into the sky and then let them experience fall damage.
gollark: I have a cool spell which summons water, explodes in it, then summons a conjured block to remove the water.
gollark: Mostly explosions.
gollark: > Lanterns can be placed on the top or hanging under most solid blocks, although some will require sneaking. (arguably also useful)
gollark: > Lanterns give off a light level of 15, which is one level higher than torches. They also melt snow layers within 2 blocks and ice within 3 blocks.
See also
- List of dinosaur-bearing rock formations
References
- Río Leona at Fossilworks.org
- Marenssi et al., 2003, p.406
- Novas, Fernando; Agnolin, Federico; Rozadilla, Sebastián; Aranciaga-Rolando, Alexis; Brissón-Eli, Federico; Motta, Matias; Cerroni, Mauricio; Ezcurra, Martín; Martinelli, Agustin; D´Angelo, Julia; Álvarez-Herrera, Gerardo (2019). "Paleontological discoveries in the Chorrillo Formation (upper Campanian-lower Maastrichtian, Upper Cretaceous), Santa Cruz Province, Patagonia, Argentina". Revista del Museo Argentino de Ciencias Naturales. 21: 217–293. doi:10.22179/revmacn.21.655. ISSN 1514-5158.
Bibliography
- Marenssi, Sergio A.; Silvio Casadío, and Sergio N. Santillana. 2003. Estratigrafía y sedimentología de las unidades del Cretácico superior-Paleógeno aflorantes en la margen sureste del lago Viedma, provincia de Santa Cruz, Argentina. Revista de la Asociación Geológica Argentina 58. 403–416. Accessed 2018-08-30.
- Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21.ISBN 0-520-24209-2
Further reading
- J. E. Powell. 2003. Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173
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