ZONAS DE RADIOLARlOS DEL EOCENO MEDIO DEL GRUPO ANCON, PENINSULA DE SANTA ELENA, ECUADOR

Authors

  • Martha Ordóñez Petroproducción, Filial de Petroecuador, Guayaquil.

Abstract

Radiolaria from 504 samples from the Ancón Group at the Anconcito-Punta Mambra section, and from six wells drilled offshore and onshore Santa Elena Peninsula were studied. The following radiolarian Zones of Middle Eocene age were recognized: Dictyoprora mongolfieri, Thyrsocyrtis triacantha, Podocyrtis ampla and Podocyrtis mitra Zones. The Clay Pebble beds are assigned to the D. mongolfieri Zone and base of the T. triacantha Zone; the Socorro Formation is assigned to the T. triacantha Zone and base of the P. ampla Zone; the Seca Formation, to the P. ampla Zone and the Punta Ancón Formation, to the P. mitra Zone.

KEY WORDS. Ecuador. Santa Elena Peninsula. Ancón Group. Anconcito-Punta Marnbra section. Middle Eocene. Radiolarian Zones.

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Published

2015-10-01

Issue

Vol. 3 No. 1 (1995)

Section

Thematic Volume

License

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a CC Attribution-NonCommercial 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.