Climatic signature of two mid–late Holocene fluvial incisions formed under sea-level highstand conditions (Pisa coastal plain, NW Tuscany, Italy)

Sarti, Giovanni; Rossi, Verónica; Amorosi, Alessandro; Bini, Mónica; Giacomelli, Serena; Pappalardo, Marta; Ribecai, C.; Ribolini, Adriano; Sammartino, Irene

doi:10.1016/j.palaeo.2015.02.020

Cited by 26 publications

(26 citation statements)

References 105 publications

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“…3000e2000 yr BC) swamp clays, 1e3 m thick, form the lower portion of the late highstand fluvial succession and exhibit upward transition to poorly-drained and then well-drained floodplain finegrained deposits of protohistoric and historic age, respectively. Isolated to locally amalgamated fluvial-channel sand bodies, crevasse/levee sands and sand-silt alternations occur at different stratigraphic levels (Amorosi et al, 2013a;Sarti et al, 2015). This progradational trend was temporarily interrupted by widespread backswamp development in the Pisa city centre at the transition from the Iron age to the early Etruscan age (Amorosi et al, 2013a).…”

Section: Geomorphological and Stratigraphic Settingmentioning

confidence: 99%

Palaeoenvironments and palaeotopography of a multilayered city during the Etruscan and Roman periods: early interaction of fluvial processes and urban growth at Pisa (Tuscany, Italy)

Bini

Rossi

Amorosi

et al. 2015

Journal of Archaeological Science

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Section: Geomorphological and Stratigraphic Settingmentioning

confidence: 99%

Palaeoenvironments and palaeotopography of a multilayered city during the Etruscan and Roman periods: early interaction of fluvial processes and urban growth at Pisa (Tuscany, Italy)

Bini

Rossi

Amorosi

et al. 2015

Journal of Archaeological Science

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“…This latter shows a progradational tendency, which is reflected by the vertical superposition of lagoon, swamp, and alluvial facies (Fig. ; Sarti et al., ).…”

Section: Resultsmentioning

confidence: 98%

“…Natural processes include fluvial activity of the Arno and Serchio (Auser) paleorivers, which flowed across the alluvial plain since protohistoric times (last ca. 4000 years; Amorosi et al, 2013a;Bini et al, 2015;Sarti et al, 2015). During the Etruscan period, to which the foundation of the city dates (Paribeni, 2010;Pasquinucci, 1994), the Pisa urban area was characterized by extensive swamp development in a complex fluvial network.…”

Section: Study Areamentioning

confidence: 99%

“…This latter shows a progradational tendency, which is reflected by the vertical superposition of lagoon, swamp, and alluvial facies (Fig. 4;Sarti et al, 2015).Inside and close to the borders of the Middle Ages walls, the thickness of the anthropogenic succession varies between about 2.5 and 6 m, with the highest values north to the modern Arno River course (cores M19, M10 in Fig. 4).…”

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confidence: 94%

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Deciphering the effects of human activity on urban areas through morphostratigraphic analysis: The case of Pisa, Northwest Italy

et al. 2017

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The type, thickness, and volume of anthropogenic deposits buried beneath long-settled cities are good indicators of the human impact on urban environments and topography. Pisa is a multi- At the same time, the urban fabric moved southward, toward the Arno River, and a thick anthropogenic succession accumulated in the city sector where an ancient ring of walls had been hypothesized. However, the highest acceleration in the urban ground growth rate is recorded since A.D.1950 onward, corresponding to the Anthropocene "Great Acceleration."

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“…). As documented by geomorphological and stratigraphic studies, the Arno and Serchio rivers have both changed their course several times during the mid–late Holocene, contributing to the coastal plain progradation (Della Rocca et al ., ; Marchisio et al ., ; Rossi et al ., ; Sarti et al ., ).…”

Section: Geological and Stratigraphic Frameworkmentioning

confidence: 97%

Late Quaternary multiple incised valley systems: An unusually well‐preserved stratigraphic record of two interglacial valley‐fill successions from the Arno Plain (northern Tuscany, Italy)

et al. 2017

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Un‐fragmented stratigraphic records of late Quaternary multiple incised valley systems are rarely preserved in the subsurface of alluvial‐delta plains due to older valley reoccupation. The identification of a well‐preserved incised valley fill succession beneath the southern interfluve of the Last Glacial Maximum Arno palaeovalley (northern Italy) represents an exceptional opportunity to examine in detail evolutionary trends of a Mediterranean system over multiple glacial–interglacial cycles. Through sedimentological and quantitative meiofauna (benthic foraminifera and ostracods) analyses of two reference cores (80 m and 100 m long) and stratigraphic correlations, a mid‐Pleistocene palaeovalley, 5 km wide and 50 m deep, was reconstructed. Whereas valley filling is chronologically constrained to the penultimate interglacial (Marine Isotope Stage 7) by four electron spin resonance ages on bivalve shells (Cerastoderma glaucum), its incision is tentatively correlated with the Marine Isotope Stage 8 sea‐level fall. Above basal fluvial‐channel gravels, the incised valley fill is formed by a mud‐prone succession, up to 44 m thick, formed by a lower floodplain unit and an upper unit with brackish meiofauna that reflects the development of a wave‐dominated estuary. Subtle meiofauna changes towards less confined conditions record two marine flooding episodes, chronologically linked to the internal Marine Isotope Stage 7 climate‐eustatic variability. After the maximum transgressive phase, recorded by coastal sands, the interfluves were flooded around 200 ka (latest Marine Isotope Stage 7). The subsequent shift in river incision patterns, possibly driven by neotectonic activity, prevented valley reoccupation guiding the northward formation of the Last Glacial Maximum palaeovalley. The applied multivariate approach allowed the sedimentological characterization of the Marine Isotope Stage 7 and Marine Isotope Stage 1 palaeovalley fills, including shape, size and facies architecture, which revealed a consistent river‐coastal system response over two non‐consecutive glacial–interglacial cycles (Marine Isotope Stages 8 to 7 and Marine Isotope Stages 2 to 1). The recurring stacking pattern of facies documents a predominant control exerted on stratigraphy by Milankovitch and sub‐Milankovitch glacio‐eustatic oscillations across the late Quaternary period.

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Climatic signature of two mid–late Holocene fluvial incisions formed under sea-level highstand conditions (Pisa coastal plain, NW Tuscany, Italy)

Cited by 26 publications

References 105 publications

Palaeoenvironments and palaeotopography of a multilayered city during the Etruscan and Roman periods: early interaction of fluvial processes and urban growth at Pisa (Tuscany, Italy)

Palaeoenvironments and palaeotopography of a multilayered city during the Etruscan and Roman periods: early interaction of fluvial processes and urban growth at Pisa (Tuscany, Italy)

Deciphering the effects of human activity on urban areas through morphostratigraphic analysis: The case of Pisa, Northwest Italy

Late Quaternary multiple incised valley systems: An unusually well‐preserved stratigraphic record of two interglacial valley‐fill successions from the Arno Plain (northern Tuscany, Italy)

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