Earth:Lacui Formation
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| Lacui Formation Stratigraphic range: Serravallian (Laventan) ~13.8–11.8 Ma | |
|---|---|
| Type | Geological formation |
| Overlies | Ancud Volcanic Complex |
| Location | |
| Coordinates | [ ⚑ ] : 41°50′S 74°00′W / 41.833°S 74°W |
| Region | Chiloé Island (Los Lagos Region) |
| Country |  Chile |
| Type section | |
| Named for | Lacuy Peninsula |
| Named by | Valenzuela |
| Year defined | 1982 |
  Lacui Formation (Chile) | |
Lacui Formation (Spanish: Formación Lacui) is a marine Miocene sedimentary formation located in Chiloé Island with minor outcrops near Carelmapu on the mainland.[1][2] Gastropod shells are the most common macrofossils of Lacui Formation.[2] According to Sernageomin (1998) the formation dates to the earliest Serravallian — that is the Middle Miocene.[2]
South of Lacui Formation there are equivalent sedimentary rocks in the islands of Ipún, Lemo and Stoke.[3]
See also
- Lacuy Peninsula
- Navidad Formation
- Santo Domingo Formation
References
- ↑ Charrier, R.; Pinto, L.; Rodríguez, M.P. (2007). "Tectonostratigraphic evolution of the Andean Orogen in Chile". The Geology of Chile. Geological Society of London. pp. 92–96.
- ↑ 2.0 2.1 2.2 Finger, Kenneth L. (2013), "Miocene foraminifera from the south-central coast of Chile", Micropaleontology 59 (4-5): 341–492, http://www.ucmp.berkeley.edu/people/klf/KLF_files/2013.Micropaleontology.pdf
- ↑ Encinas, Alfonso; Folguera, Andrés; Bechis, Florencia; Finger, Kenneth L.; Zambrano, Patricio; Pérez, Felipe; Benarbé, Pablo; Tapia, Francisca et al. (2018). "The Late Oligocene–Early Miocene Marine Transgression of Patagonia". in Folguera, A.. The Evolution of the Chilean-Argentinean Andes. Springer. pp. 443–474. ISBN 978-3-319-67774-3.
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