Loreto Formation () is a sedimentary formation of Late Eocene age in the southernmost Magallanes Basin. It overlies the Leña Dura Formation and the contact with an overlying formation is not observed.Torres et al., 2009, p.2 From 2013 to 2020 its coals were mined in Invierno mine, Riesco Island.
Description The formation contains fossil wood, leaf imprints and palynomorphs.Otero et al., 2012 Also fossil fish of Striatolamia macrota and Ischyodus dolloi and indeterminate Spheniscidae fossils have been found in the formation.Salaberry et al., 2010, p.1062Rio de las Minos at Fossilworks.org
The formation crops out in Brunswick Peninsula and Sierra Baguales among other places.Bostelmann et al., 2012
References
Bibliography