METYSS 1

Type Oceanographic cruise
Ship Téthys II
Ship owner CNRS until 2019 - IFREMER since 2020
Dates 18/06/2009 - 30/06/2009
Chief scientist(s) GAULLIER Virginie , LOFI Johanna

LABORATOIRE D'OCÉANOLOGIE ET DE GÉOSCIENCES - UMR 8187

Université de Lille

Cité Scientifique

Bâtiment SN5

59655 Villeneuve d'Ascq

log-com@univ-littoral.fr

http://log.cnrs.fr/
DOI 10.17600/9450110
Objective The METYSS (Messinian Event in the Tyrrhenian from Seismic Study) cruise was conducted in the framework of an integrated study of seismic markers of the Messinian Salinity Crisis (MSC, HSU et al., 1973) on the scale of the entire Mediterranean basin. This innovative approach is based on a multi-site comparative study (LOFI et al., accepted) to investigate the impact of the Messinian event on margins and basins in varied tectonic-sedimentary contexts,to work without taking some local controlling factors specific to each study zone (type of margin, thickness/lithology of eroded series, paleo-morphology, catchment size, tectonic context) into account and to specify the conditions of the crisis (erosion and deposit processes, volumes put into play, the way variations in the water body took place, the role of Mediterranean sills and climate variation). The METYSS cruise specifically aimed to: 1. Identify the Messinian and Plio-Quaternary surfaces and units in terms of their facies seismics, geometry, volume, and distribution. 2. Compare the spatial-temporal organization of Messinian markers with that observed in other Mediterranean margins/basins and thereby determine the role of local and regional parameters, (such as the progressive opening of the Tyrrhenian basin) in recordings observed; 3. Determine the paleobathymetry and the paleo-connections between the East-Corsica basin, the East Sardinia basin, the Tyrrhenian basin and the rest of the Mediterranean; 4. Precisely estimate the vertical displacements (tilting, thermal subsidence, uplift of the Pianosa Ridge, Pliocene magmatism) of the different segments in the region for the last 6 million years using the present-day elevation of the Messinian and Plio-Quaternary shorelines and salt tectonics. This falls under the ACTIONS MARGES-ACTION COORDONNEE INSU programme.

Bibliography

Publications

Maillard Agnès, Gaullier Virginie, Lézin Carine, Chanier Frank, Odonne Francis, Lofi Johanna (2020). Découverte de la surface d’érosion messinienne onshore/offshore dans deux lieux clés : le Promontoire Baléares (Ibiza) et la marge est-sarde (Orosei) / New onshore/offshore evidence of the Messinian Erosion Surface from key areas: The Ibiza-Balearic Promontory and the Orosei-Eastern Sardinian margin. Bsgf-earth Sciences Bulletin, 191, 9 (12p.). Publisher's official version : https://doi.org/10.1051/bsgf/2020007 , Open Access version : https://archimer.ifremer.fr/doc/00622/73392/


Lymer Gael, Vendeville Bruno Claude, Gaullier Virginie, Chanier Frank, Gaillard Morgane (2018). Using salt tectonic structures as proxies to reveal post-rift crustal tectonics: The example of the Eastern Sardinian margin (Western Tyrrhenian Sea). Marine And Petroleum Geology, 96, 214-231. https://doi.org/10.1016/j.marpetgeo.2018.05.037


Lymer Gael, Lofi Johanna, Gaullier Virginie, Maillard Agnes, Thinon Isabelle, Sage Francoise, Chanier Frank, Vendeville Bruno Claude (2018). The Western Tyrrhenian Sea revisited: New evidence for a rifted basin during the Messinian Salinity Crisis. Marine Geology, 398, 1-21. Publisher's official version : https://doi.org/10.1016/j.margeo.2017.12.009 , Open Access version : https://archimer.ifremer.fr/doc/00418/52972/


Giresse Pierre, Pascucci Vincenzo, Lymer Gael, Gaullier Virginie, Thinon Isabelle (2014). Processes controlling very low sedimentation rates on the continental slope of the Gonone-Orosei canyon system, NE Sardinia-terrestrial and oceanic significance. Geo-marine Letters, 34(6), 483-498. https://doi.org/10.1007/s00367-014-0379-x


Gaullier V., Chanier F., Lymer G., Vendeville B. C., Maillard Alexandre, Thinon Isabelle, Lofi Johana, Sage F., Loncke L. (2014). Salt tectonics and crustal tectonics along the Eastern Sardinian margin, Western Tyrrhenian : New insights from the « METYSS 1 » Cruise. Tectonophysics, 615, 69-84. https://doi.org/10.1016/j.tecto.2013.12.015