Influence of inherited topography on the Holocene sedimentary evolution of coastal systems: An example from Arno coastal plain (Tuscany, Italy)

Rossi, Verónica; Amorosi, Alessandro; Sarti, Giovanni; Potenza, Miriam

doi:10.1016/j.geomorph.2011.08.009

Cited by 59 publications

(46 citation statements)

References 68 publications

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“…Following a rapid rise in the sea level during the middle Holocene, the Arno paleovalley was flooded and the interfluves submerged by the sea. The subsequent evolution of the Pisa area saw the development of a wide, thick, clay-dominated, lagoonal succession, controlled by the inherited paleotopography (Rossi et al, 2011). At the time of maximum marine ingression (7.8 cal ka BP, (Amorosi et al, 2013)), the shoreline was located more than 7 km inland from its present position.…”

Section: Geological Settingmentioning

confidence: 99%

Seawater intrusion via surface water vs. deep shoreline salt-wedge: A case history from the Pisa coastal plain (Italy)

Franceschini

Signorini

2016

Groundwater for Sustainable Development

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Section: Geological Settingmentioning

confidence: 99%

Seawater intrusion via surface water vs. deep shoreline salt-wedge: A case history from the Pisa coastal plain (Italy)

Franceschini

Signorini

2016

Groundwater for Sustainable Development

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“…However, palaeoenvironmental reconstructions performed on both groups are rarely applied and mostly based on qualitative or semi-quantitative approaches (e.g. Rossi et al, 2011;Trog et al, 2013), whereas quantitative analyses and statistical methods are often applied to only a single fossil group (e.g. Marco-Barba et al, 2013;Vaiani and Pennisi, 2014).…”

Section: Introductionmentioning

confidence: 99%

Benthic foraminifera or Ostracoda? Comparing the accuracy of palaeoenvironmental indicators from a Pleistocene lagoon of the Romagna coastal plain (Italy)

Barbieri

Vaiani

2018

J. Micropalaeontol.

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Abstract. Integrated analyses of multiple groups of microfossils are frequently performed to unravel the palaeoenvironmental evolution of subsurface coastal successions, where the complex interaction among several palaeoecological factors can be detected with benthic assemblages. This work investigates the palaeoenvironmental resolution potential provided by benthic foraminifera and ostracoda within a Pleistocene lagoonal succession of the Romagna coastal plain (northern Italy). Quantitative approaches and statistical techniques have been applied to both groups in order to understand the main factors that controlled the composition of assemblages and compare the palaeoecological record provided by single fossil groups.The two faunal groups are characterized by the high dominance of opportunistic species (Ammonia tepidaAmmonia parkinsoniana and Cyprideis torosa); however, detailed palaeoecological information is inferred from less common taxa. Benthic foraminiferal assemblages are mainly determined by the frequencies of abnormal individuals and species related to high concentrations of organic matter, showing two assemblages: a stressed assemblage, consistent with a brackish-water environment subject to salinity and oxygen fluctuations, and an unstressed assemblage, which indicates more stable conditions. Despite the lower number of species, ostracoda show more significant differences in terms of species composition and ecological structure between their three assemblages, formed in response to a salinity gradient and indicative of inner, central, and outer lagoon conditions. The stratigraphic distribution of ostracod assemblages shows a general transgressive-regressive trend with minor fluctuations, whereas benthic foraminifera highlight the presence of a significant palaeoenvironmental stress.In this case, the higher abundance along the stratigraphic succession, the higher differentiation of the assemblages, and the well-defined relationship between taxa and ecological parameters determine Ostracoda as the most reliable fossil group for precise palaeoenvironmental reconstructions. Nevertheless, benthic foraminifera indicate palaeoenvironmental stress and can be used to refine the environmental interpretation in the presence of monospecific ostracod assemblages.

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“…Abundant shells, wood fragments and organic matter characterize the unit. This sequence reflects the depositional brackish environment of a lagoonal basin [40]. The unit is 3-12 m thick and its upper boundary ranges from 8 to 20 m below the surface.…”

Section: Borehole Classification and Geotechnical Interpretationmentioning

confidence: 92%

“…This clayey deposit records the existence of a 6-km-wide lagoon in the time period from 8000 to 6000 cal. year BP [40]; at that time the shoreline was more than 7 km landward from its present position. The lagoonal "pancone" deposit is overlaid by a 10-15 m thick fluvio-deltaic succession, composed of clays and silts with occasional sand and silty sand bodies which reflect the repeated phases of coastal progradation and the resulting development of modern Arno delta [34].…”

Section: Geological and Hydrogeological Settingmentioning

confidence: 92%

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PSInSAR Analysis in the Pisa Urban Area (Italy): A Case Study of Subsidence Related to Stratigraphical Factors and Urbanization

et al. 2016

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Permanent Scatterer Interferometry (PSI) has been used to detect and characterize the subsidence of the Pisa urban area, which extends for 33 km 2 within the Arno coastal plain (Tuscany, Italy). Two SAR (Synthetic Aperture Radar) datasets, covering the time period from 1992 to 2010, were used to quantify the ground subsidence and its temporal evolution. A geotechnical borehole database was also used to make a correspondence with the detected displacements. Finally, the results of the SAR data analysis were contrasted with the urban development of the eastern part of the city in the time period from 1978 to 2013. ERS 1/2 (European Remote-Sensing Satellite) and Envisat SAR data, processed with the PSInSAR (Permanent Scatterer InSAR) algorithm, show that the investigated area is divided in two main sectors: the southwestern part, with null or very small subsidence rates (<2 mm/year), and the eastern portion which shows a general lowering with maximum deformation rates of 5 mm/year. This second area includes deformation rates higher than 15 mm/year, corresponding to small groups of buildings. The case studies in the eastern sector of the urban area have demonstrated the direct correlation between the age of construction of buildings and the registered subsidence rates, showing the importance of urbanization as an accelerating factor for the ground consolidation process.

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Influence of inherited topography on the Holocene sedimentary evolution of coastal systems: An example from Arno coastal plain (Tuscany, Italy)

Cited by 59 publications

References 68 publications

Seawater intrusion via surface water vs. deep shoreline salt-wedge: A case history from the Pisa coastal plain (Italy)

Seawater intrusion via surface water vs. deep shoreline salt-wedge: A case history from the Pisa coastal plain (Italy)

Benthic foraminifera or Ostracoda? Comparing the accuracy of palaeoenvironmental indicators from a Pleistocene lagoon of the Romagna coastal plain (Italy)

PSInSAR Analysis in the Pisa Urban Area (Italy): A Case Study of Subsidence Related to Stratigraphical Factors and Urbanization

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