Geometry of Holocene Tidal Notches – Sea Level Markers at Perachora Peninsula, Gulf of Corinth, Greece

Schneiderwind, Sascha; Kázmér, Miklós; Boulton, Sarah J.; Papanikolaou, Ioannis; Reicherter, Klaus

doi:10.12681/bgsg.11748

Cited by 1 publication

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“…Because bioerosion happens through chemical dissolution, most bioerosion notches form in carbonate rocks (Kershaw & Guo 2001;Rovere et al 2016;Schneiderwind et al 2016). The main bioeroding genera are bivalves, such as Lithophaga, limpets, chitons, sponges (Cliona) and sea urchins (Kázmér et al 2015;.…”

Section: Bioeroding Organismsmentioning

confidence: 99%

“…All of these organisms may function as biological indicators of paleo sea-level, since they have adapted to specific conditions of temperature, light intensity and water coverage . Due to their adaptation, individuals of a species are generally found in distinct, sub-horizontal belts in a certain elevation relative to msl , Rovere et al 2015, Schneiderwind et al 2016.…”

Section: Bioeroding Organismsmentioning

confidence: 99%

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Biological Indicators Reveal Small-Scale Sea-Level Variability During MIS 5e (Sur, Sultanate of Oman)

Falkenroth

Adolphs²,

Cahnbley

et al. 2020

Open Quaternary

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In this study we aim to document various coastal notches in Sur Lagoon (Oman) and interpret them regarding their use as sea-level indicator. We also unravel any short-term sea-level fluctuations, which are potentially preserved within the trace fossil assemblages of some of the notches. The oldest paleo notches stem from the last interglacial sea-level highstand of MIS 5e. This is concluded from cosmogenic nuclide dating of the fanglomerate bedrock in Sur Lagoon as presented in this study. All outcrops of paleo notches around Sur Lagoon were investigated in regards to the faunal distribution and notch shape. Furthermore, the absolute elevation of the notches and biological markers relative to msl were measured with a differential GPS.The bioerosional notch occurs at the same height around Sur Lagoon indicating that the area remained tectonically stable over the last 125 kyr. According to the elevation of the notch-apex, msl was 3.93 ± 0.12 m higher than today during the last interglacial. The distribution of boring and bioconstructing organisms relative to the notch shape displays at least one phase of short-term sea-level rise subsequent to the notch formation. The beachrocks that are associated with the bioerosion notches in Sur Lagoon show a larger grainsize than any sediment that is deposited in the lagoon nowadays. This, in combination with the occurrence of exceptionally high and deep abrasion notches, indicates that the coastline was more openly exposed and thus experienced a higher wave energy during the notch formation.

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Section: Bioeroding Organismsmentioning

confidence: 99%

Section: Bioeroding Organismsmentioning

confidence: 99%

Biological Indicators Reveal Small-Scale Sea-Level Variability During MIS 5e (Sur, Sultanate of Oman)

Falkenroth

Adolphs²,

Cahnbley

et al. 2020

Open Quaternary

Self Cite

View full text Add to dashboard Cite

show abstract

Geometry of Holocene Tidal Notches – Sea Level Markers at Perachora Peninsula, Gulf of Corinth, Greece

Abstract: Tidal notches are a generally accepted sea level indicator that, when different from mean sea level, witness tectonic activity at or near coastlines. However, how to infer

Cited by 1 publication

References 28 publications

Biological Indicators Reveal Small-Scale Sea-Level Variability During MIS 5e (Sur, Sultanate of Oman)

Biological Indicators Reveal Small-Scale Sea-Level Variability During MIS 5e (Sur, Sultanate of Oman)

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