FN Archimer Export Format
PT J
TI Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition
BT 
AF INCARBONA, Alessandro
   DINARES-TURELL, Jaume
   DI STEFANO, Enrico
   IPPOLITO, Giuseppe
   PELOSI, Nicola
   SPROVIERI, Rodolfo
AS 1:1;2:2;3:1;4:1;5:3;6:1;
FF 1:;2:;3:;4:;5:;6:;
C1 Univ Palermo, Dipartimento Sci Terra & Mare, I-90134 Palermo, Italy.
   Ist Nazl Geofis & Vulcanol, I-00143 Rome, Italy.
   CNR, Ist Ambiente Marino Costiero, I-80133 Naples, Italy.
C2 UNIV PALERMO, ITALY
   INGV, ITALY
   CNR, ITALY
IF 2.752
TC 4
UR https://archimer.ifremer.fr/doc/00181/29205/27581.pdf
LA English
DT Article
CR IMAGES 1-MD101
BO Marion Dufresne
DE ;Middle Pleistocene Transition;Planktonic foraminifera;Ionian Sea;Orbital climate variability;Neogloboquadrina pachyderma sinistral coiling
AB The Middle Pleistocene Transition (1.2-0.7 Ma) is the most recent re-organization of the global climate system which includes variations in the frequency and amplitude of glacial/interglacial cycles, increased ice sheet volume, sea surface temperature cooling and a significant drop in the CO2 atmospheric levels. Here we present high-resolution planktonic foraminifera data (mean sampling resolution of about 780 years) from core LC10 recovered in the Ionian Sea (eastern Mediterranean), between 1.2 and 0.9 Ma. Selected taxa, among them G. ruber, T. quinqueloba and G. bulloides, show significant periodicities that can be associated to orbital cycles, mainly precession and obliquity. The planktonic foraminifera based paleoclimatic curve exhibits a cooling linear trend that can be associated to similar phenomena observed in the North Atlantic. On the other hand, we refer to the influence of the North African Monsoon the occurrence of two peaks of the low-salinity tolerant species G. quadrilobatus that fall in coincidence of sapropel layers. Finally, we discuss the distribution pattern of N. pachyderma sinistral coiling, with peaks up to about 20% between MIS 30 and 28, and compare it to middle-late Quaternary records of the Sicily Channel and western Mediterranean.
PY 2013
PD JAN
SO Palaeogeography Palaeoclimatology Palaeoecology
SN 0031-0182
PU Elsevier Science Bv
VL 369
UT 000315127200026
BP 303
EP 312
DI 10.1016/j.palaeo.2012.10.039
ID 29205
ER

EF