BLASON 2
Type | Oceanographic cruise |
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Ship | Le Suroît |
Ship owner | Ifremer |
Dates | 09/08/2002 - 09/09/2002 |
Chief scientist(s) | LERICOLAIS Gilles |
IFREMER SIEGE 1625 route de Sainte-Anne CS 10070 29280 PLOUZANE +33(0)2 98 22 40 40 |
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DOI | 10.17600/2020070 |
Objective | The objectives of the BLASON project are to investigate sedimentary records and processes across the NW margin of the Black Sea during the Late Quaternary, in relation with climatic, glacio-eustasy and sea level changes, as well as neotectonism and see their effect on how sandy bodies are desposited on the platform, slope and deep fan of the Danube. More specifically, the BLASON 2 cruise will provide information to (1) understand the effect of changes in water, sediment and organic matter inputs related to climate changes in Eurasia (ice cap changes), modifications in exchanges with the Mediterranean durin glacial/interglacial cycles (especially due to the sill effect from the Bosphorus strait) and the neotectonic; (2) compare sedimentation and depositing conditions in this confined sea with those prevailing in seas still linked to the world ocean. The recently proposed hypothesis of a catastrophic event occurring around 7500 BC, provoking an abrupt opening of the Bosphorus and a rise in the sea level of approximately 150 metres, provides additional, historical interest to the project. Techniques used include very high resolution geophysics, multibeam bathymetry and acousitc imaging, and sedimentary core sampling for sedimentological, bio-stratigraphic, geochimical, magnetic and geotechnical analyses. The related programmes are BLASON and ASSEMBLAGE. ENGLISH - The objectives of the BLASON project are to investigate sedimentary records and processes across the NW margin of the Black Sea during Late Quaternary, in relation with climatic and sea level changes, as well as neotectonism. This area was of particular interest because it corresponds to the main depocenter related to large rivers, especially the Danube river. |