Loreto Formation

Loreto Formation (Spanish: Formación Loreto) 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.[1]

Loreto Formation
Stratigraphic range: Priabonian (Divisaderan)
TypeGeological formation
Underliesnot observed
OverliesLeña Dura Formation
Lithology
PrimarySandstone
OtherConglomerate, coal
Location
Coordinates53.1°S 71.1°W / -53.1; -71.1
Approximate paleocoordinates55.3°S 61.4°W / -55.3; -61.4
RegionMagallanes y la Antártica Chilena Region
Country Chile
ExtentMagallanes Basin
Type section
Named byHoffstetter et al.
Year defined1957
Loreto Formation (Chile)

Description

The formation contains fossil wood, leaf imprints and palynomorphs.[2] Also fossil fish of Striatolamia macrota and Ischyodus dolloi and indeterminate Spheniscidae fossils have been found in the formation.[3][4]

The formation crops out in Brunswick Peninsula and Sierra Baguales among other places.[5]

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References

  1. Torres et al., 2009, p.2
  2. Otero et al., 2012
  3. Salaberry et al., 2010, p.1062
  4. Rio de las Minos at Fossilworks.org
  5. Bostelmann et al., 2012

Bibliography

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