Loreto Formation
Loreto Formation Stratigraphic range: Priabonian (Divisaderan) | |
---|---|
Type | Geological formation |
Underlies | not observed |
Overlies | |
Lithology | |
Primary | Sandstone |
Other | Conglomerate, coal |
Location | |
Coordinates | 53°06′S 71°06′W / 53.1°S 71.1°WCoordinates: 53°06′S 71°06′W / 53.1°S 71.1°W |
Approximate paleocoordinates | 55°18′S 61°24′W / 55.3°S 61.4°W |
Region | Magallanes y la Antártica Chilena Region |
Country | ![]() |
Extent | Magallanes Basin |
Type section | |
Named by | Hoffstetter et al. |
Year defined | 1957 |
![]() ![]() Loreto Formation (Chile) |
Loreto Formation (Spanish: Formación Loreto) is a sedimentary formation of Late Eocene age in the southernmost Magallanes Basin. It overlies the and the contact with an overlying formation is not observed.[1]
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]
References[]
- ^ Torres et al., 2009, p.2
- ^ Otero et al., 2012
- ^ Salaberry et al., 2010, p.1062
- ^ Rio de las Minos at Fossilworks.org
- ^ Bostelmann et al., 2012
Bibliography[]
- A revised lithostratigraphy of the Sierra Baguales, Magallanes Basin, 698–700. XIII Congeso Geológico Chileno. Accessed 2019-02-15. ; ; ; ; ; ; ; , and . 2012.
- A Late Eocene age proposal for the Loreto Formation (Brunswick Peninsula, southernmost Chile), based on fossil cartilaginous fishes, paleobotany and radiometric evidence. Andean Geology 39. 180–200. Accessed 2019-02-15. ; ; ; ; ; , and . 2012.
- Eocene birds from the western margin of southernmost South America. Journal of Paleontology 84. 1061–1070. Accessed 2019-02-15. ; ; ; , and . 2010.
- Palinoflora y macroflora de la Formación Loreto, Punta Arenas, Región de Magallanes, Chile, 1–4. XII Congreso Geológico Chileno. Accessed 2019-02-15. ; ; , and . 2009.
Categories:
- Geologic formations of Chile
- Eocene Series of South America
- Paleogene Chile
- Priabonian Stage
- Divisaderan
- Sandstone formations
- Conglomerate formations
- Coal formations
- Coal in Chile
- Paleontology in Chile
- Shallow marine deposits
- Austral or Magallanes Basin
- Geology of Magallanes Region
- Geology of Tierra del Fuego