| Puduhuapi Formation | |
|---|---|
| Stratigraphic range: Miocene | |
| Type | Geological formation |
| Thickness | c. 35 m (115 ft) |
| Lithology | |
| Primary | Sandstone, siltstone, conglomerate |
| Location | |
| Coordinates | 42°19′08.1″S 73°14′10.3″W / 42.318917°S 73.236194°W |
| Region | Los Lagos Region |
| Country |  Chile |
| Extent | Puduhuapi Island |
| Type section | |
| Named for | Puduhuapi Island |
| Named by | Levi et al. |
| Year defined | 1966 |
  Puduhuapi Formation (Chile) | |
The Puduhuapi Formation is a sedimentary formation whose only known outcrops are on Puduhuapi Island of the Chiloé Archipelago, west of Chaitén in western Patagonia, Chile. Lithologies vary from sandstone and siltstone to conglomerate. The sediment that now forms the rock deposited during the Miocene no earlier than 23 million years ago.[1]
- ^ Encinas, Alfonso; Folguera, Andrés; Bechis, Florencia; Finger, Kenneth L.; Zambrano, Patricio; Pérez, Felipe; Benarbé, Pablo; Tapia, Francisca; Riffo, Ricardo; Buatois, Luis; Orts, Darío; Nielsen, Sven N.; Valencia, Victor V.; Cituño, José; Oliveros, Verónica; De Girolamo Del Mauro, Lizet; Ramos, Víctor A. (2018). "The Late Oligocene–Early Miocene Marine Transgression of Patagonia". In Folguera, A.; Contreras Reyes, E.; Heredia, N.; Encinas, A.; B. Iannelli, S.; Oliveros, V.; M. Dávila, F.; Collo, G.; Giambiagi, L.; Maksymowicz, A.; Iglesia Llanos, M.P.; Turienzo, M.; Naipauer, M.; Orts, D.; D. Litvak, V.; Alvarez, O.; Arriagada, C. (eds.). The Evolution of the Chilean-Argentinean Andes. Springer. pp. 443–474. ISBN 978-3-319-67774-3.