Cheuquemó Formation
In today's article we are going to talk about Cheuquemó Formation, a topic that has generated great interest in recent times. Cheuquemó Formation is a topic that has been the subject of debate and discussion in different areas, whether in the academic field, in the political field or in society in general. Throughout this article we will delve into the different aspects related to Cheuquemó Formation, from its origins to its relevance today. We will explore different perspectives and opinions, with the aim of providing a comprehensive view on Cheuquemó Formation and its impact on society. We are sure that this article will be of great interest to all those who wish to delve into the complexity of Cheuquemó Formation and better understand its importance in today's world.
| Cheuquemó Formation | |
|---|---|
| Stratigraphic range: Late Oligocene–Early Miocene | |
| Unit of | Osorno–Llanquihue Basin |
| Underlies | Santo Domingo Formation |
| Overlies | Bahía Mansa Metamorphic Complex |
| Thickness | more than 1,200 m (3,900 ft) |
| Lithology | |
| Primary | Conglomerate, sandstone, mudstone, tuff |
| Other | Coal |
| Location | |
| Coordinates | 40°00′S 73°00′W / 40.0°S 73.0°W |
| Region | Los Lagos Region |
| Country |  Chile |
| Type section | |
| Named by | Floreal García |
| Year defined | 1968 |
  Cheuquemó Formation (Chile) | |
Cheuquemó Formation (Spanish: Formación Cheuquemó) is a geological formation of sedimentary rock in south-central Chile. The sediments of the formation were deposited during the Late Oligocene and Early Miocene epochs. The formations lower sections are made up of conglomerate, then successions of sandstone, tuff and mudstone rich in organic material follows. The formation indicates that sedimentation occurred in an estuarine (paralic) and other non-marine (continental) environments. It contains fossils of the following genera: Mytilus, Cardium and Turritella. Stratigraphically it overlies the Bahía Mansa Metamorphic Complex and underlies the Miocene Santo Domingo Formation.
Description
The formation is very similar to the Pupunahue Beds found further north, with the sole difference that the fossil assemblage in both seem to indicate different ages. While Cheuquemó is possibly about 14 million years old (Miocene), the Pupunahue Beds are 35–25 million years old.
See also
References
- ^ Elgueta, Sara; Le Roux, Jacobus; Duhart, Paul; McDonough, Michael; Urqueta, Esteban (2000). Estratigrafía y sedimentología de la cuencas terciarias de la Región de Los Lagos (39-41°30’S) (in Spanish). Santiago, Chile: Servicio Nacional de Geología y Minería. pp. 15–16. ISSN 0020-3939.
- ^ Alfaro, G.; Gantz, E.; Magna, O. (1990). "El yacimiento de carbón Catamutún (La Unión)". Actas. Segundo Simposio sobre el Terciario de Chile (in Spanish). Santiago, Chile: Departamento de Geociencias, Facultad de Ciencias, Universidad de Concepción. pp. 11–28.
