Middle–Late Pleistocene landscape evolution of the Dover Strait inferred from buried and submerged erosional landforms

García-Moreno, D.; Gupta, Sanjeev; Collier, Jenny; Oggioni, Francesca; Vanneste, Krıs; Trentesaux, Alain; Verbeeck, K.; Versteeg, W.; Jomard, Hervé; Camelbeeck, Thierry; Batist, Marc De

doi:10.1016/j.quascirev.2018.11.011

Cited by 11 publications

(2 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although slip rates of active faults are very low (on the order of 0.1 mm/yr, see above) some active fault systems are known to be able to host rare but significant earthquakes such as the Rhine Graben Faults (both borders and internal basin faults), some western Alps faults (Higher Durance, Belledone), Frontal external Alps or Pyrenees faults (North Pyrenean zone, MDF and western Provence E-trending thrusts). In old Paleozoic rocks, some major crustal faults (long and rooted) are also prone to rarely produce significant earthquakes such as the frontal zone of Hercynian orogeny [North Artois-shear zone: Jomard et al, 2017, García-Moreno et al, 2019 probably associated with the M w ∼ 6, earthquake of 1580, or the Sillon Houiller Fault zone in western Massif Central (several hundred km long, see location on Figure 2), or the South Armorican shear zone in Brittany, where no paleoseismic evidence has been found although some Quaternary deformations have been mentioned [Baize et al, 2002, Kaub, 2019, and one of the strongest historical earthquake reported in metropolitan France (1799 Bouin earthquake, M w ∼ 6, see location on Figure 2).…”

Section: Potential For Surface Faulting Associated With Significant Earthquakes In Metropolitan Francementioning

confidence: 99%

Thirty years of paleoseismic research in metropolitan France

Bellier¹,

Cushing²,

Sébrier³

2022

Comptes Rendus. Géoscience

View full text Add to dashboard Cite

A critical review is conducted of a selection of paleoseismic works published on, or close to, metropolitan France over the last 30 years. The evolution of these works may be subdivided into three periods: dawn of French paleoseismic studies (≈1990-1995), beginning of a multidisciplinary paleoseismologic approach, and paleoseismic studies in the first decades of the 21st century. This review of the most interesting paleoseismic studies at nine trench sites indicates that it is often difficult to associate Quaternary surface deformations with a well-identified fault. However, these studies also provided important results demonstrating that even in regions of low seismicity, seismic ruptures can repeat on the same low slip rate fault, thus providing evidence that historical seismicity is not sufficient to assess seismic hazard in metropolitan France. Finally, recommendations are provided for future paleoseismic investigations in low-seismicity regions.

show abstract

Section: Potential For Surface Faulting Associated With Significant Earthquakes In Metropolitan Francementioning

confidence: 99%

Thirty years of paleoseismic research in metropolitan France

Bellier¹,

Cushing²,

Sébrier³

2022

Comptes Rendus. Géoscience

View full text Add to dashboard Cite

show abstract

“…Therefore, the shallow-most near-shore parts of presently submerged continental shelves extend over a considerable area globally and represent an important and often poorly studied geological environment. Due to the steadily increasing interest of the geological and archaeological research communities in shallow, presently submerged, and often buried landscapes [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41], accurate depth conversion is crucial for future geological studies and paleoenvironmental reconstructions in such settings. We investigate an example of a transgressed and submerged alluvial plain in the Bay of Koper (Gulf of Trieste, northern Adriatic Sea; Figure 1) to provide sound velocity values for thin (up to 20 m thick) Quaternary sediments deposited in terrestrial-marine sedimentary environments located in shallow near-shore environments a few tens of meters deep.…”

Section: Introductionmentioning

confidence: 99%

Sound Velocity in a Thin Shallowly Submerged Terrestrial-Marine Quaternary Succession (Northern Adriatic Sea)

Novak

Šmuc

Poglajen³

et al. 2020

Water

View full text Add to dashboard Cite

Estimating sound velocity in seabed sediment of shallow near-shore areas submerged after the Last Glacial Maximum is often difficult due to the heterogeneous sedimentary composition resulting from sea-level changes affecting the sedimentary environments. The complex sedimentary architecture and heterogeneity greatly impact lateral and horizontal velocity variations. Existing sound velocity studies are mainly focused on the surficial parts of the seabed sediments, whereas the deeper and often more heterogeneous sections are usually neglected. We present an example of a submerged alluvial plain in the northern Adriatic where we were able to investigate the entire Quaternary sedimentary succession from the seafloor down to the sediment base on the bedrock. We used an extensive dataset of vintage borehole litho-sedimentological descriptions covering the entire thickness of the Quaternary sedimentary succession. We correlated the dataset with sub-bottom sonar profiles in order to determine the average sound velocities through various sediment types. The sound velocities of clay-dominated successions average around 1530 m/s, while the values of silt-dominated successions extend between 1550 and 1590 m/s. The maximum sound velocity of approximately 1730 m/s was determined at a location containing sandy sediment, while the minimum sound velocity of approximately 1250 m/s was calculated for gas-charged sediments. We show that, in shallow areas with thin Quaternary successions, the main factor influencing average sound velocity is the predominant sediment type (i.e. grain size), whereas the overburden influence is negligible. Where present in the sedimentary column, gas substantially reduces sound velocity. Our work provides a reference for sound velocities in submerged, thin (less than 20 m thick), terrestrial-marine Quaternary successions located in shallow (a few tens of meters deep) near-shore settings, which represent a large part of the present-day coastal environments.

show abstract

Megafloods in Pleistocene Times

Herget

2024

Springer Natural Hazards

View full text Add to dashboard Cite

Middle–Late Pleistocene landscape evolution of the Dover Strait inferred from buried and submerged erosional landforms

Cited by 11 publications

References 60 publications

Thirty years of paleoseismic research in metropolitan France

Thirty years of paleoseismic research in metropolitan France

Sound Velocity in a Thin Shallowly Submerged Terrestrial-Marine Quaternary Succession (Northern Adriatic Sea)

Megafloods in Pleistocene Times

Contact Info

Product

Resources

About