Type Geological formation Region Coquimbo Region | Country Chile Named for Coquimbo | |
Other Clay lences, terra rossa Primary Conglomerate, Sandstone, Siltstone, Slate, Coquina | ||
Coquimbo Formation (Spanish: Formación Coquimbo) is a Miocene and Pliocene sedimentary formation located in Coquimbo Region in Norte Chico, Chile. 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.
References
Coquimbo Formation Wikipedia(Text) CC BY-SA