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Geological mapping of the Croatian Adriatic seafloor within the frame of EMODnet-Geology

The European Marine Observation and Data network (EMODnet) is focused on projects assembling marine data, products and metadata into a standardised and harmonised marine data which are interoperable and free of restrictions on use. EMODnet geology (one of seven EMODnet projects) has the goal to compile existing data on European seas related and to deliver where possible harmonised 1:250, 000 and 1:100, 000 maps of the sea-bed substrate, the rate of accumulation and/or sedimentation on the sea- floor ; geological boundaries and faults ; geological events and event probabilities and minerals and submerged landscapes. Information on coastal type and behaviour is supplemented by information on coastal erosion or sedimentation and the rate at which it occurs. The geological data the Croatian part of the Adriatic sea covers a total marine area of 55 349 km². Within the project the first digital sea-bed substrate map of the Adriatic was harmonized and digitised with the most recent available data. Also some ten maps scale 1:25000 made during surveys in the 1980’s were later incorporated into the “Seabed substrate of the Adriatic sub-region“. Within the project an attempt was made to develop the first digital pre-quaternary sea-floor geology map of the Croatian part of the Adriatic sea based on seismic and well data . Since the objective was to compile and harmonise all available sea-bed geology (outcrop and sub-Quaternary) information at a scale of 1:250, 000 it was necessary to make completely new maps. The new maps were derived based on 53 exploration wells located in the Croatian part of the Adriatic sea and selected seismic profiles from the more than 80 000 km of 2D seismic data. The information on the type and behaviour of coastal landforms along the entire coastal zone was made based on simplified method used for the EUROSION project the resolution of the data was 1:100 000. This is also the first digital map of this type made for the Croatian coast. The data will be essential not only for geologists but also for others interested in marine geological data like marine managers, habitat mappers and archaeologists and is available at the following site: http://www.emodnet.eu/geology. The EMODnet geology project is in its third phase in which even more detailed dana and maps will be available. European Marine Observation and Data Network (EMODnet) is supported by a dedicated Secretariat funded by the European Commission (tender MARE/2012/15).

Emodnet geology, substarte, marine mapping, coastal movement

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