Calcareous nannofossils upper Miocene biostratigraphy and biochronology at western Equatorial Atlantic (ODP Site 999)

Author(s): Buitrago-Reina, Yaned Margarita; Flores, José Abel; Sierro Sánchez, Francisco Javier
Author Affiliation(s): Primary:
Universidad de Salamanca, Salamanca, Spain
Volume Title: Microfossils, stratigraphy and environments
Volume Author(s): Flores, José Abel, editor
Source: Microfossils, stratigraphy and environments, edited by José Abel Flores. Revista Española de Micropaleontología, 42(3), p.301-319. Publisher: Empresa Nacional, Madrid, Spain. ISSN: 0556-655X CODEN: RTEMB5
Note: In English with Spanish summary. 4 refs.; illus., incl. strat. col., plates, tables, geol. sketch map
Summary: The ODP Site 999 is located in the Colombian Caribbean basin (Atlantic NW). We analyze 154 samples with ages ranging between Tortonian (Upper Miocene) until Zanclean (Lower Pliocene). The biostratigraphy of this work is based on the standard zonal schemes for the Neogene. Initially, we determine the depths of the calcareous nannofossil events that we identify in this work, and then the ages for each of them. For this purpose, we use the data of the orbitally tuned 18O isotope record of the ODP Site 999A. We compare the results of the calibrated ages obtained in other basins by different authors to determine the synchronism or diachronism. We achieve the calibrated ages for 28 events and we conclude that 8 of them are synchronic, 8 diachronic, and for 12 of them there are no data to establish age differences.
Year of Publication: 2010
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Atlantic Ocean; Biochronology; Biostratigraphy; Caribbean Sea; Caribbean region; Cenozoic; Colombian Basin; Equatorial Atlantic; Leg 165; Messinian; Microfossils; Miocene; Nannofossils; Neogene; North Atlantic; Northwest Atlantic; ODP Site 999; Ocean Drilling Program; Plantae; Tertiary; Tortonian; Upper Miocene
Coordinates: N124437 N124437 W0784422 W0784422
Record ID: 2017012281
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from Instituto Geologico y Minero de Espana, Madrid, Spain