Paleosol architecture of a late Quaternary basin–margin sequence and its implications for high-resolution, non-marine sequence stratigraphy

Amorosi, Alessandro; Bruno, Luigi; Rossi, Verónica; Severi, Paolo; Hajdas, Irka

doi:10.1016/j.gloplacha.2013.10.007

Cited by 44 publications

(46 citation statements)

References 58 publications

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“…The morphology of pedogenic calcite (evolutionary stages II–III of Gile et al ., ; Machette, ) suggests periods of subaerial exposure on the order of a few thousand years. This estimate is substantiated by radiocarbon dates from similar soil profiles observed at the Po Basin margin (Amorosi et al ., ). Carbonate redistribution and oxidation, requiring the presence of a vadose zone, indicate low groundwater table during subaerial exposure.…”

Section: Sedimentary Faciesmentioning

confidence: 99%

Early Holocene transgressive palaeogeography in the Po coastal plain (northern Italy)

et al. 2017

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To understand the complex stratigraphic response of a coastal depositional system to rapid eustatic rise and sediment inputs, the evolution of the Adriatic coastline and Po River system, during the post‐glacial (Holocene) transgression, was investigated. The landward migration and evolution of a wave‐dominated estuary was mapped, based on an extensive data set comprising 14 boreholes, 28 core descriptions and 308 piezocone tests, chronologically constrained between 11·5 and 7·0 kyr bp by 137 radiocarbon dates. Palaeogeographic maps reveal temporal differences in retrogradational geometries and mechanisms that likely underpin shoreline retreat. The Po estuary initially developed within a shallowly incised valley and then spread onto the interfluves. Between 11·5 and 9·2 kyr bp the Po fluvial system became avulsive/distributive and wetlands developed in topographically depressed areas. The shoreline retreated at a mean rate of ca 10 m year−1, between 9·2 kyr and 7·7 kyr bp, following a stepped trajectory at the centennial scale. After 7·7 kyr bp, bayhead deltas started to prograde and partially filled the estuary. The overall stratigraphic architecture is interpreted to reflect the sedimentary response of the coastal depositional system to the main pulses of early Holocene eustatic rise. The influence of antecedent topography, partly due to local subsidence, was dominant at the time of initial transgression. Basin morphology influenced sediment dispersal and partitioning. Sediment supplied by the Po River was trapped within the estuary, whereas coastal sand bodies at the estuary mouth were fed by alongshore currents and by reworking of older barriers. High‐resolution age control that ties facies evolution to independently constrained eustasy provides direct data to test models of short‐term coastal retreat under conditions of relative sea‐level rise, and makes this case study a useful analogue for the interpretation of ancient marginal‐marine, retrogradational systems where only stratal geometries are available.

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Section: Sedimentary Faciesmentioning

confidence: 99%

Early Holocene transgressive palaeogeography in the Po coastal plain (northern Italy)

et al. 2017

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“…ky BP, possibly in association with increased flood magnitudes (Hanson et al, 2006). Coeval episodes of fluvial incision, with fluvial terrace development and pedogenesis on the interfluves, have been recently documented from two buried incisedvalley systems of Italy, in Tuscany and close to Naples (Amorosi et al, , 2013, as well as from several paleovalley systems worldwide (Amorosi et al, 2014b;Blum et al, 2008;Busschers et al, 2007;Cordier et al, 2006;Dabrio et al, 2000;Kasse et al, 2010;Liu et al, 2010;Wellner and Bartek, 2003). Similarly, although aspects of this interpretation are open to question, the older terrace might represent the remnant of fluvial erosion during the Early Pleniglacial (MIS 5/4 transition in Fig.…”

Section: The Upper Valley Fill: Post-mis 5e Sedimentary Evolutionmentioning

confidence: 99%

A late Quaternary multiple paleovalley system from the Adriatic coastal plain (Biferno River, Southern Italy)

et al. 2016

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“…Alekseeva, Alekseev, Maher & Demkin, ), and a darker–reddish color indicating pedogenic iron (Jarmer and Schütt, ). This soil layer corresponds to early transgressive palaeosoils dating to the Pleistocene–Holocene boundary, known from the Tuscan coast (Amorosi, Bruno, Rossi, Severi, & Hajdas, ).…”

Section: Discussionmentioning

confidence: 92%

Reconstructing human–landscape interactions in the context of ancient iron smelting on Elba Island, Italy, using sedimentological evidence

et al. 2019

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We reconstruct human–landscape interactions in the context of ancient bloomery smelting on Elba Island, Tyrrhenian Sea, based on sedimentological evidence. Elba was, together with Populonia, the center of iron production in antiquity (mid‐6th century B.C.E. to 1st century C.E.). The sediment sequences obtained by vibracoring in the Campo plain reveal that the Holocene transgression triggered aggradation during the Early–Middle Holocene (>5.4 ka cal BP). Nevertheless, wetland conditions prevailed in low‐lying areas during Roman times. Correspondingly, ancient smelting sites are found only on elevated areas along the edge of the plain. The palaeolandscape thus plays a key role in understanding location factors for smelting sites in antiquity. Our sediment sequences indicate that during Etrusco–Roman times (2.4–2.0 ka cal BP) morphodynamics on the island increased, as is evident from the alteration of slope deposits and slack water deposits in upstream positions, and the change from lacustrine to alluvial deposition in downstream areas. The charcoal record shows that fire dynamics increased simultaneously. The sediments that are synsedimentary to the ancient smelting period show significantly increased arsenic contents and high sediment magnetic susceptibility, whereas overall concentrations of heavy metals remain in the range of the geogenic background signal.

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Paleosol architecture of a late Quaternary basin–margin sequence and its implications for high-resolution, non-marine sequence stratigraphy

Cited by 44 publications

References 58 publications

Early Holocene transgressive palaeogeography in the Po coastal plain (northern Italy)

Early Holocene transgressive palaeogeography in the Po coastal plain (northern Italy)

A late Quaternary multiple paleovalley system from the Adriatic coastal plain (Biferno River, Southern Italy)

Reconstructing human–landscape interactions in the context of ancient iron smelting on Elba Island, Italy, using sedimentological evidence

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