Climatic control on the formation of marine-notches in microtidal settings: New data from the northwestern Mediterranean Sea

Vacchi, Matteo; Gatti, Giulia; Kulling, Benjamin; Morhange, Christophe; Marriner, Nick

doi:10.1016/j.margeo.2022.106929

Cited by 5 publications

(9 citation statements)

References 44 publications

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“…Periods of relative sea-level stability have been documented along the eastern Adriatic coast using different RSL markers such as tidal notches (e.g., Fouache et al, 2000; Antonioli et al, 2004b; Benac et al, 2004; Marriner et al, 2014) and algal rims (e.g., Faivre et al, 2019, 2021a, b). Eastern Adriatic tidal notches are interpreted to have formed during two main periods (Late Antique Little Ice Age and Little Ice Age) of relative sea-level stability, similar to findings in other parts in the eastern (e.g., Boulton and Stewart, 2015), central (e.g., Faivre et al, 2013, 2021b), and western Mediterranean (e.g., Vacchi et al, 2022). The northern Adriatic notches formed during the Late Antique Little Ice Age (Faivre et al, 2019), whereas central Adriatic notches formed during the Little Ice Age, about 500 years ago (Faivre et al, 2013, Faivre and Butorac, 2018).…”

Section: Discussionsupporting

confidence: 67%

Characterization of phreatic overgrowths on speleothems precipitated in the northern Adriatic during a sea-level stillstand at ca. 2.8 ka

Lončar,

Faivre,

Miklavič

et al. 2024

Quat. res.

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We examined a Late Holocene sea-level stillstand using phreatic overgrowths on speleothems (POS) recovered from Medvjeđa Špilja [Bear Cave] (northern Adriatic Sea) from −1.28 ± 0.15 m below present mean sea level. Different mineralogical analyses were performed to characterize the POS and better understand the mechanisms of their formation. Results reveal that the fibrous overgrowth is formed of calcite and that both the supporting soda straw and the overgrowth have very similar trace element compositions. This suggests that the drip-water and groundwater pool from which the POS formed have similar chemical compositions. Four subsamples were dated by means of uranium-series. We found that ca. 2800 years ago, the relative sea level was stable for about 300 years at a depth of approximately −1.28 ± 0.15 m below the current mean sea level. This finding roughly corresponds with the end of a relatively stable sea-level period, between 3250 and 2800 cal yr BP, previously noted in the southern Adriatic. Our research confirms the presence of POS in the Adriatic region and establishes the Medvjeđa Špilja pool as a conducive environment for calcite POS formation, which encourages further investigations at this study site.

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Section: Discussionsupporting

confidence: 67%

Characterization of phreatic overgrowths on speleothems precipitated in the northern Adriatic during a sea-level stillstand at ca. 2.8 ka

Lončar,

Faivre,

Miklavič

et al. 2024

Quat. res.

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“…Our opinion follows the interpretation provided by Antonioli et al [2], for which the formation of MTN follow sea level rise. The submerged notch described in Vacchi et al [33] (Fig 2e in the paper) could represent the Holocene STN by Antonioli et al [31] (see Figure 2a), in which sizes are proportional to the local GIA, with lower values in Marseille and significantly higher values in Sardinia and Sicily [41]. Vacchi et al [33] agreed with us that submerged notches in the Frioul Archipelago only form in sheltered areas, while roof notches in the exposed ones.…”

Section: Discussionsupporting

confidence: 67%

“…The submerged notch described in Vacchi et al [33] (Fig 2e in the paper) could represent the Holocene STN by Antonioli et al [31] (see Figure 2a), in which sizes are proportional to the local GIA, with lower values in Marseille and significantly higher values in Sardinia and Sicily [41]. Vacchi et al [33] agreed with us that submerged notches in the Frioul Archipelago only form in sheltered areas, while roof notches in the exposed ones. Their measurements would be correct with respect to the Marseille tide gauge data, even if now they are not available.…”

Section: Discussionsupporting

confidence: 67%

“…5) Regarding the interpretation of the submerged notch at the Friul Archipelago provided by [33], the authors wrote: "At the sheltered sites, the relative absence of mechanical wave action and bio-erosion (intrinsically correlated) were not conducive to the formation of the notch in the last millennium. The absence of these major erosional processes also influenced the shape of the notch, which, in contrast to the exposed site notch, presents both the roof and the floor.…”

Section: Discussionmentioning

confidence: 99%

“…We suggest calling them Dipping Tidal Notches (DTNs) due to their progressive deepening towards the interior of the ria. Vacchi et al [33] described in a sheltered coastal area in the Friul Archipelago (Marseille, France) a submerged notch at -0.35 m. The authors did not tell the roof notch above the submerged one. They attributed the genesis of the submerged notch to the sea level elevation between 1.5 ka and 1.0 ka, the Little Ice Age (LIA) cool period, or about -0.5 m below the modern sea level.…”

Section: Tidal Notches Roof Notches Abrasional Notches and Dipping No...mentioning

confidence: 99%

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Dipping Tidal Notches (DTN): Exposed vs Sheltered Morphometry

Furlani,

Agate,

de Sabata

et al. 2024

Preprint

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Tidal notches, long regarded as reliable indicators of mean sea level, have been extensively studied along carbonate coasts in the central Mediterranean Sea. Previous studies revealed a correlation between the genesis of tidal notches and tidal range, lithology, cliff foot depth and wave energy. In the 2020 Geoswim campaign at Lampedusa, the southernmost island of the Pelagie archipelago (Italy), 'anomalous' tidal notches were identified. Unlike normal notches observed elsewhere, those in Lampedusa's southern bays exhibited a particular behavior —constantly deepening in the inner part of the bays, reaching a maximum depth of approximately 30 cm below sea level and narrowing inwards. Similar phenomena were previously observed by [1] near Marseille (France) and in Gozo Island (Malta). Time-lapse images, alongside measurements of morphometric param-eters, were collected during the survey. Despite the rapid morphological changes of the notches within the bay, the tectonic stability of the studied areas was confirmed by literature and data. Our hypothesis indicates that a combination of marine factors, influenced by local meteomarine conditions driven by the local morphology of the small bays exposed to southern quadrants con-tribute to the formation of these unique landforms. The latter manifest higher lowering erosion rates slightly below mean sea level in sheltered areas, challenging conventional notions about tidal notch formation.

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Impact of coseismic uplifting on relative sea level change in the Southern Adriatic during the past 4.500 years – New evidence from Dubrovnik epicentral area based on analysis of algal rims and tidal notches

Faivre,

Lončar,

Tomljenović

et al. 2024

Geomorphology

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Climatic control on the formation of marine-notches in microtidal settings: New data from the northwestern Mediterranean Sea

Cited by 5 publications

References 44 publications

Characterization of phreatic overgrowths on speleothems precipitated in the northern Adriatic during a sea-level stillstand at ca. 2.8 ka

Characterization of phreatic overgrowths on speleothems precipitated in the northern Adriatic during a sea-level stillstand at ca. 2.8 ka

Dipping Tidal Notches (DTN): Exposed vs Sheltered Morphometry

Impact of coseismic uplifting on relative sea level change in the Southern Adriatic during the past 4.500 years – New evidence from Dubrovnik epicentral area based on analysis of algal rims and tidal notches

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