Lacui Formation

Lacui Formation
Stratigraphic range: Serravallian (Miocene)
Type Geological formation
Overlies Ancud Volcanic Complex
Location
Region Chiloé Island (Los Lagos Region)
Country Chile
Type section
Named for Lacuy Peninsula
Named by Valenzuela, 1982

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

References

  1. ↑ Charrier, R.; Pinto, L.; Rodríguez, M.P. (2007). "Tectonostratigraphic evolution of the Andean Orogen in Chile". In Moreno, Teresa; Gibbons, Wes. The Geology of Chile. Geological Society of London. pp. 92–96.
  2. 1 2 3 Finger, Kenneth L. (2013), "Miocene foraminifera from the south-central coast of Chile" (PDF), Micropaleontology, 59 (4–5): 341–492
  3. ↑ 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. The Evolution of the Chilean-Argentinean Andes. Springer. pp. 443–474. ISBN 978-3-319-67774-3.


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