RT Journal Article
T1 Variaciones de rango orbital en la dinámica de la Nutriclina/Termoclina en el Pacifíco Ecuatorial durante los últimos 500 Ka indicado por cocolitofóridos (Site 1240, Leg 202)
T1 Nutricline/Thermocline orbital variations in the Equatorial Pacific ODP Site 1240 as revealed by coccolithophoresduring the last 500 Ka
A1 López Otálvaro, G. E.
A1 Flores, José Abel
A1 Sierro, Francisco Javier
AB The ODP Site 1240 is located in the equatorial cold tongue in the Eastern Equatorial Pacific. The analysisof the calcareous nannofossil assemblages allow us to monitor fluctuations in the Nutricline/Thermoclineover the last 500 Ka, using the relationship between the upper photic zone taxa (small placoliths) and thelower photic zone taxa (Florisphaera profunda), by means of the N ratio function. The variations in this Nratio pointed out two intervals with dominant higher relative abundances of small placoliths overFlorisphaera profunda, and other interval with an abrupt increasing in the relative abundance of Florisphaeraprofunda over the small placoliths, controlled esentially by a precessional force, and during the last 177Ka by a markedly excentricity component
PB Sociedad Geológica de España
YR 2005
FD 2005
LK http://hdl.handle.net/10272/8765
UL http://hdl.handle.net/10272/8765
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026