Evolution of a single incised valley related to inherited geology, sea level rise and climate changes during the Holocene (Tirso river, Sardinia, western Mediterranean Sea)

Falco, Giovanni De; Carannante, Alfredo; Vais, Carla Del; Gasperini, Luca; Pascucci, Vincenzo; Sanna, I; Simeone, Simone; Conforti, Alessandro

doi:10.1016/j.margeo.2022.106885

Cited by 13 publications

(4 citation statements)

References 69 publications

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“…The causes of this change may only be hypothesized through the results of this study and could be attributable to an increase of terrestrial contributions in the cave, possibly due to the climatic instability that followed the optimum climatic (Giraudi et al, 2011) and/or to the geomorphological changes occurred along the coast, with the progradation of alluvial fans (De Falco et al, 2022; Pascucci et al, 2022).…”

Section: Discussionmentioning

confidence: 90%

Paleoecological reconstruction during the Holocene in the Middle Branch of Bue Marino Cave (Sardinia, Italy)

Romano,

Sechi,

Andreucci

et al. 2023

The Holocene

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This study was conducted in the Middle Branch of Bue Marino Cave (Sardinia, Italy) to reconstruct paleoecological conditions during the Holocene through microfaunal proxies in seven surface sediment samples and a short sediment core (BMD-2018, 18 cm), all collected in 2018 and another core sampled in 2021 (BMD-2021, 28 cm). The first attempt at dating cave sediment through luminescence was conducted on BMD-2021; the derived age was 6.04 ± 0.47 ka at 18 cm depth. Although continuous sedimentation and constant rates are not probable in the cave, this indicates that the sedimentary record dates to the early times after the Holocene flooding of the cave by the sea. Benthic foraminifera and grain size were analyzed in all surface samples and core BMD-2018, while only benthic foraminifera were studied in BMD-2021. The recent foraminiferal assemblages, studied from an ecological point of view, were applied as modern analog to reconstruct the paleoecological conditions in sediment cores. Significant changes in the sedimentary environment were excluded; the two cores showed a similar foraminiferal turnover at a similar depth, from an older assemblage with prevailing indifferent Ammonia inflata to a younger one with prevailing opportunist Eggerelloides advena. This turnover was attributed to changes in the amount and/or quality of available nutrients. Based on these results, this event is likely related to possibly attributable to the effects of climate changes that occurred in the Holocene. However, more extensive studies are necessary to better understand the effects of the climatic/environmental events in the Late-Holocene in the caves. Although it represents a first attempt at paleoenvironmental reconstruction based on sediments from a Mediterranean marine cave, this study demonstrated that benthic foraminifera are refined paleoenvironmental proxies and that the integrated approach with the luminescence dating produces reliable results for studying the effects of global changes in these environments.

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Section: Discussionmentioning

confidence: 90%

Paleoecological reconstruction during the Holocene in the Middle Branch of Bue Marino Cave (Sardinia, Italy)

Romano,

Sechi,

Andreucci

et al. 2023

The Holocene

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“…Incised marine valleys (IVS) are important indicators of base-level changes on continental shelves during the low sea level of the Quaternary [ [1] , [2] , [3] ]. It produces a depositional space mainly from fluvial erosion which is filled by fluvial-, tide-derived material, and influenced by wave processes [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Appraisal of reservoir quality for hydrocarbon-bearing deep-water Miocene sandstones incised valley, south-east Asian offshore Indus: An application of seismic attributes and instantaneous spectral porosity quantitative reservoir simulations

Naseer,

Singh,

Khalid

et al. 2024

Heliyon

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“…During the rapid Holocene relative sea-level rise, the sea flooded hypsometrically lower parts of the rivers along the eastern Adriatic coast, and salt-wedge estuaries such as the Krka or Zrmanja Rivers [28,41,42] were formed. Besides the relative sea-level rise, other factors may control hydrodynamic and geomorphic processes, such as inherited topography, the morphology of the estuary, or the paleoclimate [43,44]. The barriers in the Krka River prevented direct marine flooding during the mid-Holocene.…”

Section: Introductionmentioning

confidence: 99%

Integrated Reconstruction of Late Quaternary Geomorphology and Sediment Dynamics of Prokljan Lake and Krka River Estuary, Croatia

et al. 2023

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The upper part of the Krka River estuary and Prokljan Lake are a specific example of a well-stratified estuarine environment in a submerged river canyon. Here, we reconstructed the geomorphological evolution of the area and classified the data gathered in the study, integrating multibeam echosounder data, backscatter echosounder data, side-scan sonar morpho-bathymetric surveys, and acoustic sub-bottom profiling, with the addition of ground-truthing and sediment analyses. This led to the successful classification of the bottom sediments using the object-based image analysis method. Additional inputs to the multibeam echosounder data improved the segmentation of the seafloor classification, geology, and morphology of the surveyed area. This study uncovered and precisely defined distinct geomorphological features, specifically submerged tufa barriers and carbonate mounds active during the Holocene warm periods, analogous to recent tufa barriers that still exist and grow in the upstream part of the Krka River. Fine-grained sediments, classified as estuarine sediments, hold more organic carbon than coarse-grained sediments sampled on barriers. A good correlation of organic carbon with silt sediments allowed the construction of a prediction map for marine sedimentary carbon in this estuarine/lake environment using multibeam echosounder data. Our findings highlight the importance of additional inputs to multibeam echosounder data to achieve the most accurate results.

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Evolution of a single incised valley related to inherited geology, sea level rise and climate changes during the Holocene (Tirso river, Sardinia, western Mediterranean Sea)

Cited by 13 publications

References 69 publications

Paleoecological reconstruction during the Holocene in the Middle Branch of Bue Marino Cave (Sardinia, Italy)

Paleoecological reconstruction during the Holocene in the Middle Branch of Bue Marino Cave (Sardinia, Italy)

Appraisal of reservoir quality for hydrocarbon-bearing deep-water Miocene sandstones incised valley, south-east Asian offshore Indus: An application of seismic attributes and instantaneous spectral porosity quantitative reservoir simulations

Integrated Reconstruction of Late Quaternary Geomorphology and Sediment Dynamics of Prokljan Lake and Krka River Estuary, Croatia

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