TOPO-MED - Plate re-organization in the Western Mediterranean: lithospheric causes and topographic consequences - Cruise No. MSM15/5 - July 17-July 29, 2010 - Valletta (Malta)-Warnemünde (Germany) (English)

2012
  • Report  /  Electronic Resource

How to get this document?

Free access

The evolution of the Gulf of Cadiz and the Western Mediterranean Sea is inherently governed by (i) plate convergence between Nubia (Africa) / Eurasia and (ii) subduction related slab-roll back in the Miocene. Both processes are responsible for topographic features forming the Gulf of Cadiz / Gibraltar Arc / Alboran Sea / Rif / Betic domain and deep-seated features related to the consumption of African lithosphere. The cruise MSM15/5 is part of the ESFEUROCORES program TOPO-EUROPE and is aiming to study the interrelation between convergence and major tectonic fault zones in the Gulf of Cadiz and the Alboran Sea and Miocene subduction / deep-seated seismicity at 40-150 km depth. The transit of MARIA S. MERIAN back to Germany served to recover a seismic monitoring network of ocean bottom seismometers (OBS) that was installed in January 2010 in the Gulf of Cadiz during R/V POSEIDON cruise P393, providing a six month long time series of local earthquake data collected on ocean bottom stations. First results suggest that a number of faults visible in swath-mapping bathymetric data remained inactive during the period of monitoring. Detected earthquakes occurred in a band paralleling the Iberian coastline. Most interesting, earthquakes occurred in the mantle, a feature rarely observed in continental lithosphere. Fault mechanisms suggest that earthquakes are caused by the convergence between Africa and Europe. Further, in a piggyback project foraminifera were sampled from the shallow water column in the Mediterranean and Gulf of Cadiz.

  • Title:
    TOPO-MED - Plate re-organization in the Western Mediterranean: lithospheric causes and topographic consequences - Cruise No. MSM15/5 - July 17-July 29, 2010 - Valletta (Malta)-Warnemünde (Germany)
  • Author / Creator:
  • Publisher:
    DFG-Senatskommission für Ozeanographie
  • Place of publication:
    Bremen
  • Year of publication:
    2012
  • Size:
    22 pages
  • DOI:
  • Type of media:
    Report
  • Type of material:
    Electronic Resource
  • Language:
    English
  • Classification:
    DDC:    550 Earth sciences and geology
  • Source:
  • Export: