Control orbital del flujo de cocolitofóridos durante el Plioceno superior en el Pacífico ecuatorial (ODP Leg 138)  [Upper Pliocene orbital forcing of Coccolithophoraceae in the Equatorial Pacific (ODP Leg 138)]

Alternate Title(s): Upper Pliocene orbital forcing of Coccolithophoraceae in the Equatorial Pacific (ODP Leg 138)
Author(s): Flores, José Abel; Sierro, Francisco Javier; de Pablo, Fernando
Author Affiliation(s): Primary:
Universidad de Salamanca, Departamento de Geología, Salamanca, Spain
Volume Title: Número homenaje al Dr. Guillermo Colom
Volume Author(s): Lamolda, Marcos A., editor
Source: Número homenaje al Dr. Guillermo Colom [Issue to honor Dr. Guillermo Colom], edited by Marcos A. Lamolda. Revista Española de Paleontología, 1995( Homenaje al Dr. Guillermo Colom), p.69-76. Publisher: Sociedad Española de Paleontología, Madrid, Spain. ISSN: 0213-6937
Note: In Spanish with English summary. 35 refs.; illus., incl. sketch map
Summary: From the coccolith flux estimation in two eastern equatorial Pacific sites (ODP Site 849 and 852, Leg 138), a spectral analysis was carried out in order to detect some periodicity related to the Milankovitch frequencies. The studied interval in the upper Pliocene (4 to 2 Ma) was divided into two periods: between 4 and 3.2 Ma, and between 3.2 and 2 Ma. The reentry of Coccolithus pelagicus at 3.2 Ma was used to define the boundary between both intervals. Site 849, located in a region of oceanographic divergence, shows lower coccolith fluxes than Site 852, located in the convergence area; however, in both sites, the coccolith flux distribution was mainly controlled by precession and obliquity. The eccentricity frequencies are weakly defined.
Year of Publication: 1995
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Assemblages; Biostratigraphy; Cenozoic; Climate forcing; Coccolithophoraceae; Coccolithus; Coccolithus pelagicus; Currents; Equatorial Pacific; Leg 138; Microfossils; Migration; Milankovitch theory; Models; Neogene; ODP Site 849; ODP Site 852; Ocean Drilling Program; Ocean currents; Orbital forcing; Pacific Ocean; Paleo-oceanography; Paleoenvironment; Patterns; Plantae; Pliocene; Range; Stratigraphic units; Taphonomy; Tertiary; Upper Pliocene
Coordinates: N001058 N001100 W1103110 W1103111
N051733 N051734 W1100432 W1100435
Record ID: 2007056363
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