Vegetation and climate across the Early–Middle Pleistocene transition at Montalbano Jonico, southern Italy

Bertini, Adèle; Toti, Francesco; Marino, Maria; Ciaranfi, Neri

doi:10.1016/j.quaint.2015.01.003

Cited by 41 publications

(53 citation statements)

References 73 publications

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“…Interestingly, although the lower resolution and the chronological mismatching prevent a secure correlation, a shortlived period of climate perturbation is apparent within several MIS 19c records. Indeed, a cooling event in the early part of the interglacial has been reported from the pollen record of the Montalbano Jonico section (Southern Italy, Bertini et al, 2015;, and from a marine core from the Osaka Bay (Japan, Maegakiuchi et al, 2016). For the other intra-interglacial events, the coupling between terrestrial and marine proxies, especially those from the Iberian Margin, is not as clear, perhaps pointing to a different forcing.…”

Section: Forcing and Pacing For Millennial-to-centennial-scale Variabmentioning

confidence: 99%

Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)

Regattieri

Giaccio

Mannella

et al. 2019

Quaternary Science Reviews

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Among past interglacial periods, Marine Isotope Stage (MIS) 19 is particularly interesting because its orbital geometry is very similar to that of the present interglacial. Here we present a high-resolution (subcentennial) multiproxy record covering the ca. 790-770 ka interval, i.e. the interglacial MIS 19c and the ensuing glacial inception of MIS 19b, from a lacustrine sediment sequence retrieved from the Sulmona Basin (central Italy). The record has an independent chronology based on radiometric dating of six volcanic ash layers, and the resulting age model has a mean associated uncertainty of ± 2.6 kyr. Variations in sediment geochemistry and mineralogy are interpreted in terms of past hydrological and 2 temperature changes. Several millennial and sub-millennial events of reduced precipitation are well expressed. Comparisons with continental and marine records from the mid-latitude and sub-polar North Atlantic suggest a broad spatial expression for the observed events. Events occurring within the interglacial are not clearly associated with changes in marine proxies in the Iberian Margin, although similarities with the record from the sub-polar North Atlantic can be recognized and tentatively linked to changes in local hydrography having a downstream effect amplified by changes in atmospheric circulation. During the glacial inception, however, changes in the Sulmona record are coherent with changes in North Atlantic records, with drier events likely associated with meltwater-induced intervals of AMOC weakening. An event at ca. 785.6 ka may also reflect oceanic changes caused by freshwater discharges from residual ice-sheets and an outburst flood, similar to the 8.2 ka event in the Holocene.

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Section: Forcing and Pacing For Millennial-to-centennial-scale Variabmentioning

confidence: 99%

Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)

Regattieri

Giaccio

Mannella

et al. 2019

Quaternary Science Reviews

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“…In this respect, it is worth noting that local conditions may have a profound influence on vegetational develpoment. For example, at Montalbano Jonico in southern Italy, wooded steppes to steppes characterize glacial phases of MIS 21-18, when cold and dry conditions prevailed (Bertini et al, 2015). In contrast, Valle di Manche, just 140 km to the south, was presumably closer to upland areas as a raindemanding conifer forest was established during the glacial intervals of MIS 20 and 18, with arid conditions occurring during the deglaciations (Capraro et al, 2005).…”

Section: Terrestrial Vegetationmentioning

confidence: 99%

Early–Middle Pleistocene transitions: Linking terrestrial and marine realms

Head

Gibbard

2015

Quaternary International

226

123

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Marked by a progressive increase in the amplitude of climate oscillations and a shift towards a quasi-100 kyr frequency, the Early-Middle Pleistocene transition (EMPT), previously known as the Mid-Pleistocene Transition (or Mid-Pleistocene Revolution) (1.4-0.4 Ma), represents a fundamental shift in the Earth's climate state. The physical and biotic responses to this transition, amplified by the growth of Northern Hemisphere ice sheets, have been profound. Two important paleomagnetic episodes characterize the EMPT, the Jaramillo Subchron (1.07-0.99 Ma) and the Matuyama-Brunhes Chron boundary (~773 ka). The latter has been chosen as the primary guide for the Lower-Middle Pleistocene Subseries boundary, as it lies at the approximate midpoint of the EMPT and aids in global recognition both in marine and terrestrial deposits. The Jaramillo Subchron has received less attention, but the late Early Pliocene is important in Europe because it saw the progressive transition from the Villafranchian to Galerian mammal faunas, and expansion of hominins into western and northern Europe. The Jaramillo Subchron is represented by Marine Isotope Stages (MIS) 31 to 28, with MIS 30 already showing the asymmetrical (saw-tooth) pattern characteristic of the Middle Pleistocene. Indeed, while variation in the 40-kyr band (obliquity) remains strong throughout the EMPT, low frequency variability begins at around 1250-1200 kyr, which coincides with a progressive increase in global ice volume. The early phase of the EMPT is characterized by important glaciations beginning with MIS 36 and continuing to MIS 22, a major intensification of the East Asian monsoon system, intensification of loess deposition in northern Europe, development of open landscapes in western Siberia, increased fluvial incision, higher amplitude sea-level change, and spread of large mammals across northern Eurasia, and a strong reduction in the North Atlantic thermohaline circulation. In Europe, the loss of thermophilous plant taxa during the EMPT and indeed throughout the Quaternary is a reminder of the progressive cooling that took place in this region.

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“…1A and 9), provides some additional chronological constraint for the studied succession. Tsuga, reaching the significant percentage of 9% at Torre Mucchia, was found in appreciable amounts (up to 3%) until MIS 18 at Montalbano Jonico, a sequence dated by means of two 40 Ar/ 39 Ar ages on volcaniclastic layers ( 40 Ar/ 39 Ar 773.9 ± 1.3 and 801.2 ± 19.5 ka; Bertini et al, 2015). It was also continuously found at Valle di Manche before and soon after the MatuyamaeBrunhes boundary (Capraro et al, 2005).…”

Section: Chronological Constraintsmentioning

confidence: 96%

Sedimentology, faunal content and pollen record of Middle Pleistocene palustrine and lagoonal sediments from the Peri-Adriatic basin, Abruzzi, eastern central Italy

et al. 2016

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A 25 m-thick outcrop section exposed at Torre Mucchia, on the sea-cliff north of Ortona, eastern central Italy, comprises a rare Middle Pleistocene succession of shallow-water and paralic sediments along the western Adriatic Sea. An integrated study of the section, including facies and microfacies analyses, and characterization of paleobiological associations (mollusks, fishes, ostracods, foraminifers and pollen), enable a detailed reconstruction of the paleoenvironmental and paleoclimatic conditions during deposition. The shallow-water deposits include a transgressive, deepening- and fining-upward shoreface to offshore-transition facies succession overlain by a regressive shoreface-foreshore sandstone body with an erosive base and a rooted and pedogenically altered horizon at the top that imply deposition during sea-level fall. This forced regressive unit is overlain by paralic strata forming a transgressive succession comprising palustrine carbonates and back-barrier lagoonal mudstones. The palustrine carbonates exhibit some of the typical features encountered in palustrine limestones deposited within seasonal freshwater wetlands (marl prairies). Following the sea-level rising trend, the freshwater marshes were abruptly replaced by a barrier-lagoon system that allowed deposition of the overlying mud-rich unit. Within these deposits, the faunal assemblages are consistent with a low-energy brackish environment characterized by a relatively high degree of confinement. The pollen record documents the development of open forest vegetation dominated by Pinus and accompanied by a number of mesophilous and thermophilous tree taxa, whose composition supports a tentative correlation with Marine Oxygen Isotope Stage 17. The new pollen record from Torre Mucchia improves our understanding of the vegetation development in the Italian Peninsula during the Middle Pleistocene and sheds new light on the role played by the most marked glacial periods in determining the history of tree taxa

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Vegetation and climate across the Early–Middle Pleistocene transition at Montalbano Jonico, southern Italy

Cited by 41 publications

References 73 publications

Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)

Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)

Early–Middle Pleistocene transitions: Linking terrestrial and marine realms

Sedimentology, faunal content and pollen record of Middle Pleistocene palustrine and lagoonal sediments from the Peri-Adriatic basin, Abruzzi, eastern central Italy

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