A high-resolution record of the last deglaciation in the Sicily Channel based on foraminifera and calcareous nannofossil quantitative distribution

Sprovieri, Rodolfo; Stefano, Enrico Di; Incarbona, Alessandro; Gargano, M. E.

doi:10.1016/s0031-0182(03)00632-1

Cited by 101 publications

(125 citation statements)

References 56 publications

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“…Finally, we found a significant high relative abundance (up to 20%) of the polar species N. pachyderma sx between MIS 30 and 28, that is striking in light of its very rare occurrence in the late Quaternary records of the central and eastern Mediterranean Sea (Thunell, 1978;Rohling and Gieskes, 1989;Rohling et al, 1993;Hayes et al, 1999;Sprovieri et al, 2003;Hayes et al, 2005). We argue that more data would be needed to understand the meaning of the distribution pattern of N. pachyderma sx and its dispersal into the Mediterranean Sea since the MPT.…”

Section: Resultsmentioning

confidence: 68%

“…Teleconnection phenomena between the Mediterranean and the Greenland/North Atlantic region are documented for the late Quaternary (e.g. Rohling et al, 1998;Cacho et al, 1999;Sbaffi et al, 2001;Rohling et al, 2002b;Sprovieri et al, 2003;Martrat et al, 2004;Pérez-Folgado et al, 2004;Sprovieri et al, 2006;Incarbona et al, 2008a). This connection has been explained by variations in North Atlantic Deep Water formation rate, as modelling experiments suggest that this mechanism is able to cause coherent temperature changes in the two regions (e.g.…”

Section: The Influence Of the North Atlantic Climate System And Of Thmentioning

confidence: 98%

“…The latter species lives in warm surface waters characterized by relatively lower salinity (Bé and Tolderlund, 1971;Hemleben et al, 1989;Pujol and Vergnaud-Grazzini, 1995;Sprovieri et al, 2003). In the LC10 record, two distinctive peaks of G. quadrilobatus coincide with two sapropel layers, at about 1070 kyr and 940 kyr (Fig.…”

Section: The Influence Of the North Atlantic Climate System And Of Thmentioning

confidence: 99%

“…4), in comparison with its rarity (b5%) in the central/eastern Mediterranean during the late Quaternary (e.g. Thunell, 1978;Rohling and Gieskes, 1989;Rohling et al, 1993;Hayes et al, 1999;Sprovieri et al, 2003;Hayes et al, 2005;Triantaphyllou et al, 2009;Siani et al, 2010;Sprovieri et al, 2012). This situation is well illustrated by the long-range study of ODP Site 964, drilled in the Ionian Sea (Lisiecki and Raymo, 2005); depth (mbsf) of MISs at core LC10, recognized on the basis of magnetic susceptibility data (Dinarès-Turell et al, 2003); sedimentation rates (cm/kyr) calculated on the basis of linear interpolation between the adopted tie-points and the subsequent sampling resolution (years).…”

Section: The Distribution Of N Pachyderma Sxmentioning

confidence: 99%

“…The paleoclimatic curve presented here is the algebraic sum of warm-water species percentages (G. ruber, Hastigerina siphonifera, G. sacculifer, Globoturborotalita rubescens and Globoturborotalita tenella) expressed as positive values and cold-water species percentages (Neogloboquadrina pachyderma, G. bulloides, Turborotalita quinqueloba, Globorotalia scitula and Globigerinita glutinata) expressed as negative values (Corselli et al, 2002;Sprovieri et al, 2006;Incarbona et al, 2010). In fact, among others, G. ruber ecological preference for warm and oligotrophic surface waters has been established in numerous oceanographic settings (Hemleben et al, 1989;Pujol and Vergnaud-Grazzini, 1995;Žarić et al, 2005) and paleoceanographic reconstructions (Sprovieri et al, 2003(Sprovieri et al, , 2006(Sprovieri et al, , 2012; T. quinqueloba thrives in cold and nutrient-rich surface waters (Hemleben et al, 1989;Pujol and Vergnaud-Grazzini, 1995;Žarić et al, 2005); N. pachyderma dx lives in cold waters of middle-high latitude and is a proxy for deep chlorophyll maximum levels (e.g. Rohling and Gieskes, 1989).…”

Section: Introductionmentioning

confidence: 99%

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Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition

Incarbona

Dinarès-Turell

Stefano

et al. 2013

Palaeogeography, Palaeoclimatology, Palaeoecology

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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 CO 2 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.

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Section: Resultsmentioning

confidence: 68%

Section: The Influence Of the North Atlantic Climate System And Of Thmentioning

confidence: 98%

Section: The Influence Of the North Atlantic Climate System And Of Thmentioning

confidence: 99%

Section: The Distribution Of N Pachyderma Sxmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition

Incarbona

Dinarès-Turell

Stefano

et al. 2013

Palaeogeography, Palaeoclimatology, Palaeoecology

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Offset timing of climate oscillations during the last two glacial‐interglacial transitions connected with large‐scale freshwater perturbation

Jimenez-Amat

Zahn

2015

Paleoceanography

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Th-dated speleothem timescale to ODP976 suggests glacial conditions in the Northeast Atlantic region were terminated abruptly and interglacial warmth was reached in less than a millennium. The early-MIS5e cooling and freshening at ODP976 coincided with similar changes at North Atlantic sites suggesting this was a basin-wide event. By analogy with T1, we argue that this was a YD-type event that was shifted into the early stages of the last interglacial period. This scenario is consistent with evidence from northern North Atlantic and Nordic Sea sites that the continuing disintegration of the large Saalian Stage (MIS6) ice sheet in Eurasia delayed the advection of warm North Atlantic waters and full-strength convective overturn until later stages of MIS5e.

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Landslide Frequency and Failure Mechanisms at NE Gela Basin (Strait of Sicily)

et al. 2017

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Despite intense research by both academia and industry, the parameters controlling slope stability at continental margins are often speculated upon. Lack of core recovery and age control on failed sediments prevent the assessment of failure timing/frequency and the role of prefailure architecture as shaped by paleoenvironmental changes. This study uses an integrated chronological framework from two boreholes and complementary ultrahigh‐resolution acoustic profiling in order to assess (1) the frequency of submarine landsliding at the continental margin of NE Gela Basin and (2) the associated mechanisms of failure. Accurate age control was achieved through absolute radiocarbon dating and indirect dating relying on isotope stratigraphic and micropaleontological reconstructions. A total of nine major slope failure events have been recognized that occurred within the last 87 kyr (~10 kyr return frequency), though there is evidence for additional syndepositional, small‐scaled transport processes of lower volume. Preferential failure involves translational movement of mudflows along subhorizontal surfaces that are induced by sedimentological changes relating to prefailure stratal architecture. Along with sequence‐stratigraphic boundaries reflecting paleoenvironmental fluctuations, recovered core material suggests that intercalated volcaniclastic layers are key to the basal confinement and lateral movement of these events in the study area. Another major predisposing factor is given by rapid loading of fine‐grained homogenous strata and successive generation of excess pore pressure, as expressed by several fluid escape structures. Recurrent failure, however, requires repeated generation of favorable conditions, and seismic activity, though low if compared to many other Mediterranean settings, is shown to represent a legitimate trigger mechanism.

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A high-resolution record of the last deglaciation in the Sicily Channel based on foraminifera and calcareous nannofossil quantitative distribution

Cited by 101 publications

References 56 publications

Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition

Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition

Offset timing of climate oscillations during the last two glacial‐interglacial transitions connected with large‐scale freshwater perturbation

Landslide Frequency and Failure Mechanisms at NE Gela Basin (Strait of Sicily)

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