Bioestratigrafía del parche arrecifal de la Quebrada Brazo Seco, Plio-Pleistoceno, Limón, Costa Rica

The Plo-Pleistocene stratigraphic sequence of Brazo Seco Creek-Limón is composed by fossiliferous and non-fossiliferous sandstones, and limestones (blaflestones) constituted by coral fragments into a sandy matrix. The depositional environment was shallow marine and they belong to the Río Banano Fomt...

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Autores Principales: Aguilar Álvarez, Teresita, Denyer Chavarría, Percy
Formato: Artículo
Idioma: Español
Publicado: Universidad de Costa Rica 2011
Acceso en línea: http://revistas.ucr.ac.cr/index.php/geologica/article/view/13313
http://hdl.handle.net/10669/22537
Sumario: The Plo-Pleistocene stratigraphic sequence of Brazo Seco Creek-Limón is composed by fossiliferous and non-fossiliferous sandstones, and limestones (blaflestones) constituted by coral fragments into a sandy matrix. The depositional environment was shallow marine and they belong to the Río Banano Fomtation. Overlying this sequence, are conglomerates of the Suretka Formation, genetically related to the uplifting of the Talamanca Range, and they correspond with fan delta deposits. In this paper, we include the description of the fossil content: mollusca, corals, bryozoa, arthrophoda and ichnofossils.Based on the fossils and outcrops the depositional environmet of this section of the Río Banano Formation was litoral to sub-litoral, with patch reefs, whose growth was interrupted by fast sedimentation and/or uplifting.