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    • Source: Coquimbo Formation

      • Coquimbo Formation (Spanish: FormaciĂłn Coquimbo) is a Miocene to Middle Pleistocene sedimentary formation located in Coquimbo Region in Norte Chico, Chile. The lowermost unit belongs to the lower Miocene, with the third-deepest unit dated at 11.9 ± 1.0 Ma. The uppermost unit of the formation is estimated at 1.2 Ma. In the area of Tongoy, the Coquimbo Formation was deposited in an ancient bay that was formed in a graben or half-graben, with a normal fault dipping east. Sea level changes during the Holocene have caused erosion to cut several marine terraces into the formation.


      Fossil content


      The following fossils have been found in the formation:


      See also



      Cerro Ballena
      Elqui-LimarĂ­ Batholith
      Caleta Herradura Formation
      Navidad Formation
      Pisco Formation


      References




      Further reading


      C. Acosta Hospitaleche, J. Canto, and C. P. Tambussi. 2006. Pingüinos (Aves, Spheniscidae) en Coquimbo (Mioceno Medio-Plioceno Tardio), Chile y su vinculación con las corrientes oceánicas. Revista Española de Paleontología 21(1):115-122
      Staig, Felipe; Hernández, Sebastián; López, Patricio; Villafaña, Jaime A.; Varas, Cristian; Soto, Luis Patricio; Carrillo Briceño, Jorge D. (2015), "Late Neogene Elasmobranch fauna from the Coquimbo Formation, Chile", Revista Brasileira de Paleontologia, 18 (2): 261–272, doi:10.4072/rbp.2015.2.07, retrieved 2017-08-15

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