scholarly journals The Use of Submerged Speleothems for Sea Level Research in the Mediterranean SeA: A New Perspective Using Glacial- and Hydro-Isostatic Adjustment (Gia)

2021 ◽  
Author(s):  
fabrizio antonioli ◽  
Stefano Furlani ◽  
Paolo Montagna ◽  
Paolo Stocchi
Keyword(s):  
Mediterranean Sea ◽  
Sea Level ◽  
Accurate Information ◽  
Sea Level Changes ◽  
Isostatic Adjustment ◽  
Regional Sea Level ◽  
Sea Level Variations ◽  
The Mediterranean ◽  
New Perspective ◽  
Mis 5

The investigation of submerged speleothems for sea level studies has made significant contributions to the understanding of the global and regional sea level variations during the Middle and Late Quateranry. This has been especially the case for the Mediterranean Sea, where more than 300 submerged speleothems sampled in 32 caves have been analysed so far. Here, we present a comprehensive review of the results obtained from the study of submerged speleothems since 1978. The studied speleothems cover the last 1.4 Ma and are focused mainly on Marine Isotope Stages (MIS) 1, 2, 3, 5.1, 5.3, 5.5, 7.1, 7.2, 7.3 and 7.5. Results reveal that submerged speleothems represent extraordinary archives providing accurate information on former sea level changes, also considering that the Mediterranean Sea is devoid of any tropical corals since the Miocene. New results from a stalagmite collected at Palinuro (Campania, Italy) characterized by marine overgrowth are also reported. The measured elevations of speleothems are contaminated by the local response to glacial- and hydro-isostatic adjustment (GIA), and thus might significantly deviate from the global eustatic signal. Age and altitude comparation between Mediterranean speleothems, flowstone from Bahamas with local GIA provide a new scenario for MIS 5 and 7 sea level reconstrutions.

scholarly journals The Use of Submerged Speleothems for Sea Level Studies in the Mediterranean Sea: A New Perspective Using Glacial Isostatic Adjustment (GIA)

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 77
Author(s):  
Fabrizio Antonioli ◽  
Stefano Furlani ◽  
Paolo Montagna ◽  
Paolo Stocchi
Keyword(s):  
Mediterranean Sea ◽  
Sea Level ◽  
Late Quaternary ◽  
Accurate Information ◽  
Sea Level Changes ◽  
The Bahamas ◽  
Isostatic Adjustment ◽  
Regional Sea Level ◽  
The Mediterranean ◽  
New Perspective

The investigation of submerged speleothems for sea level studies has made significant contributions to the understanding of the global and regional sea level variations during the Middle and Late Quaternary. This has especially been the case for the Mediterranean Sea, where more than 300 submerged speleothems sampled in 32 caves have been analysed so far. Here, we present a comprehensive review of the results obtained from the study of submerged speleothems since 1978. The studied speleothems cover the last 1.4 Myr and are mainly focused on Marine Isotope Stages (MIS) 1, 2, 3, 5.1, 5.3, 5.5, 7.1, 7.2, 7.3, and 7.5. The results reveal that submerged speleothems represent extraordinary archives providing accurate information on former sea level changes. New results from a stalagmite collected at Palinuro (Campania, Italy) and characterized by marine overgrowth are also reported. The measured elevations of speleothems are affected by the local response to glacial and hydro-isostatic adjustment (GIA), and thus might significantly deviate from the global eustatic signal. A comparison of the ages and altitude values of the Mediterranean speleothems and flowstone from the Bahamas with local GIA provides a new scenario for MIS 5 and 7 sea level reconstructions.

scholarly journals Submerged Speleothems and Sea Level Reconstructions: A Global Overview and New Results from the Mediterranean Sea

Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1663
Author(s):  
Fabrizio Antonioli ◽  
Stefano Furlani ◽  
Paolo Montagna ◽  
Paolo Stocchi ◽  
Lucio Calcagnile ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Sea Level ◽  
Late Quaternary ◽  
Sea Level Changes ◽  
Central Mediterranean ◽  
Sea Levels ◽  
Cave Deposits ◽  
Regional Sea Level ◽  
Sea Level Variations ◽  
The Mediterranean

This study presents a global overview of the submerged speleothems used to reconstruct paleo sea levels and reports new results from two stalactites collected in the Mediterranean Sea. Coastal cave deposits significantly contributed to the understanding of global and regional sea-level variations during the Middle and Late Quaternary. The studied speleothems cover the last 1.4 Myr and focused mainly on Marine Isotope Stages (MIS) 1, 2, 3, 5.1, 5.3, 5.5, 7.1, 7.2, 7.3 and 7.5. The results indicate that submerged speleothems represent extraordinary archives that can provide detailed information on former sea-level changes. The two stalactites collected in the central Mediterranean Sea, at Favignana and Ustica islands (Sicily, Italy), are both characterized by continental, phreatic or marine layers. The U-Th and 14C ages of the new speleothems provide results of great interest for relative sea-level changes over the last 1000 years.

scholarly journals Submerged Speleothems and Sea Level Reconstructions: A Global Overview and New Results from the Mediterranean Sea

2021 ◽  
Author(s):  
Fabrizio Antonioli ◽  
Stefano Furlani ◽  
Paolo Montagna ◽  
Paolo Stocchi ◽  
Lucio Calcagnile ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Sea Level ◽  
Additional Data ◽  
Late Quaternary ◽  
Sea Level Changes ◽  
Central Mediterranean ◽  
Relative Sea Level ◽  
Central Mediterranean Sea ◽  
Regional Sea Level ◽  
Sea Level Variations

This study presents a world review as well as new additional data in form of submerged speleothems that are used for paleo sea level reconstructions. Speleothems significantly contributed to the understanding of the global and regional sea level variations during the Middle and Late Quaternary. The studied speleothems cover the last 1.4 Myr and are focused mainly on Marine Isotope Stages (MIS) 1, 2, 3, 5.1, 5.3, 5.5, 7.1, 7.2, 7.3 and 7.5. Results reveal that submerged speleothems represent extraordinary archives providing detailed information on former sea level changes. We present also new results from stalactites collected in central Mediterranean sea, at Favignana and Ustica islands (Sicily, Italy), both characterized by continental, phreatic or marine layers. The study and analysis of the latter speleothems provide results of great interest for relative sea level changes over the last 1000 years.

scholarly journals On the steric and mass-induced contributions to the annual sea level variations in the Mediterranean Sea

2006 ◽  
Vol 111 (C9) ◽  
Author(s):  
David García ◽  
Benjamin F. Chao ◽  
Jorge Del Río ◽  
Isabel Vigo ◽  
Jesús García-Lafuente
Keyword(s):  
Mediterranean Sea ◽  
Sea Level ◽  
Sea Level Variations ◽  
The Mediterranean

Influence of Mediterranean sea-level changes on the Dacic Basin (Eastern Paratethys) during the late Neogene: the Mediterranean Lago Mare facies deciphered

2005 ◽  
Vol 17 (3) ◽  
pp. 437-462 ◽  
Author(s):  
Georges Clauzon ◽  
Jean-Pierre Suc ◽  
Speranta-Maria Popescu ◽  
Mariana Marunteanu ◽  
Jean-Loup Rubino ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Sea Level ◽  
Sea Level Changes ◽  
Eastern Paratethys ◽  
Late Neogene ◽  
The Mediterranean

Holocene sea-level changes in the Spermonde Archipelago, Indonesia: implications for vertical land movements

2020 ◽  
Author(s):  
Alessio Rovere ◽  
Maren Bender ◽  
Thomas Mann ◽  
Paolo Stocchi ◽  
Dominik Kneer ◽  
...  
Keyword(s):  
Sea Level ◽  
Model Development ◽  
Ice Age ◽  
Sea Level Changes ◽  
Geophysical Research ◽  
Isostatic Adjustment ◽  
Level Data ◽  
Level Model ◽  
Regional Sea Level ◽  
Spermonde Archipelago

<p>We surveyed the elevation and age (<sup>14</sup>C) of paleo sea-level indicators in five islands of the Spermonde Archipelago. We describe 24 new sea-level index points from fossil microatolls, and we compare our dataset with both previously published proxies and sea-level predictions from a set of 54 Glacial Isostatic Adjustment (GIA) models, using different assumptions on both ice melting histories and mantle structure and viscosity. We then investigate the implications of our data and models in terms of vertical land movements in the study area, with two main results.</p><p>First, data from the heavily populated island of Barrang Lompo are significantly lower (ca. 80 cm) than those at all the other islands. In absence of instrumental data (e.g., GPS or tide gauges) in any of the islands, we advance the hypothesis that this difference may be due to groundwater extraction and loading of buildings on Barrang Lompo, that would cause this island to subside at rates in the order of ~3-11 mm/a.</p><p>Second, Common Era data (0-400 a BP) seem to indicate that the islands in the archipelago may be affected by tectonically-driven vertical land motions in the order of -0.88±0.61 mm/a (1-sigma), albeit slight uplift cannot be excluded. Different assumptions on vertical land motions affect, in turn, the assessment of which GIA model shows the best match with Late Holocene (ca. 4-5 ka) sea level data. Tectonic stability or slight uplift would favor iterations of ANICESELEN (De Boer et al., 2014), while subsidence would cause the sea level data to fit better with iterations of ICE-6G (Peltier et al., 2015).</p><p><strong>References</strong></p><p>De Boer, Bas, Paolo Stocchi, and Roderik Van De Wal. A fully coupled 3-D ice-sheet-sea-level model: algorithm and applications." Geoscientific Model Development 7.5 (2014): 2141-2156.</p><p>Peltier, W. R., D. F. Argus, and R. Drummond. Space geodesy constrains ice age terminal deglaciation: The global ICE‐6G_C (VM5a) model. Journal of Geophysical Research: Solid Earth 120.1 (2015): 450-487.</p><p><strong>Acknowledgments</strong></p><p>This project is funded by SEASCHANGE (RO-5245/1-1) and HAnsea (MA-6967/2-1) from the Deutsche Forschungsgemeinschaft (DFG), part of the Special Priority Program (SPP)-1889 "Regional Sea Level Change and Society". Parts of this study are under review in Climate of the Past (https://www.clim-past-discuss.net/cp-2019-63/)</p>

Tide-dominated deltas responding to high-frequency sea-level changes, Pre-Messinian Rifian Corridor, Morocco

2020 ◽  
Vol 90 (11) ◽  
pp. 1642-1666
Author(s):  
Daan Beelen ◽  
Lesli Wood ◽  
Mohamed Najib Zaghloul ◽  
Faouziya Haissen ◽  
Michiel Arts ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Sea Level ◽  
Coarse Grained ◽  
Tidal Range ◽  
Sea Level Changes ◽  
Cross Sectional ◽  
Depositional Processes ◽  
Wide Range ◽  
The Mediterranean ◽  
Sedimentary Fill

ABSTRACT The Rifian Corridor was an ancient sea strait that connected the Mediterranean Sea with the Atlantic Ocean during the Miocene. Key outcrop exposures of this corridor's sedimentary fill are exposed at the Ben Allou, El Adergha, and Driouate localities, in the Fez–Meknes region, Morocco. These display cyclic successions that formed immediately before the disappearance of the Rifian Corridor, and the associated isolation and desiccation of the Mediterranean Sea. Sedimentary cycles at Ben Allou consist of: facies 1, Organic-matter-bearing blue claystones; facies 2, gray marlstones intercalated with turbidites; and facies 3, yellow-brown, coarse-grained calcarenites. Based on their coarse grain size, presence of reactivation surfaces, bidirectional current structures, and mud drapes as well as microfossil, macrofossil and trace fossil assemblages, we interpret the calcarenites (facies 3) as prograding, strait-adjacent tide-dominated deltas transitioning from large subtidal compound dunes to intertidal sand sheets that are composed mostly of authigenic carbonate sediment. The two fine-grained facies were deposited in deeper prodelta (facies 2) and shelfal (facies 1) environments, as shown by our combined sedimentological and paleontological evidence. Cross-sectional channel geometries provide a means for reconstructing the delta's paleo–tidal range, suggesting that it was macrotidal, and likely amplified by the paleogeometry of the Southern Rifian Corridor, to at least 4.2 m. The cyclic succession of corridor fill exposed here likely is the result of three, roughly 70 m fluctuations of eustatic rise and subsequent fall, possibly linked to ∼ 100,000-year glacial–interglacial climate fluctuations. Broadly similar, contemporaneous sedimentary successions from the outcrop at El Adergha, 40 km east of Ben Allou, show that these sea-level variations affected a wide range of the Corridor, while rocks at the locality of Driouate, 9 km south of Ben Allou, show evidence for lagoonal environments on the landward side of the corridor, which were subject to periodic marine regressions and floodings. These results are reinterpretations of previous work on these sediments, with implications for depositional processes in the Rifian Corridor, Miocene paleoclimate, and the Messinian salinity crisis.

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