High resolution seismic profiles interpretation and sedimentological and petrophysical correlation of piston cores evidence a recent, complex submarine instability process offshore Cuma, Eastern Tyrrhenian Sea. In the investigated area a channel, showing asymmetrical sides, has been identified corresponding to a palaeo-channel, which alternated phases of erosion and deposition and probably formed during the last sea level oscillation as lateral contribution of the Cuma canyon. Seismic interpretation allowed establishing a stratigraphic marker, linked to the post-Glacial-Holocene transgressive surface, clearly individuated at the top of a Late Pleistocene prograding wedge. The HST Holocene unit crops out at the sea bottom and is in part characterized by downward displacement related to creep-type process. This latter, constituted in the upper part by mud deposits, is interpreted as controlled by high sediment supply, high water contents and shallow gas pockets.
Holocene Sedimentary and Gravitative Processes in Highstand Prodelta Deposits on the Cuma Outer Shelf (Easter Tyrrenian Sea): an Integrated Approach.
Senatore M;
2011-01-01
Abstract
High resolution seismic profiles interpretation and sedimentological and petrophysical correlation of piston cores evidence a recent, complex submarine instability process offshore Cuma, Eastern Tyrrhenian Sea. In the investigated area a channel, showing asymmetrical sides, has been identified corresponding to a palaeo-channel, which alternated phases of erosion and deposition and probably formed during the last sea level oscillation as lateral contribution of the Cuma canyon. Seismic interpretation allowed establishing a stratigraphic marker, linked to the post-Glacial-Holocene transgressive surface, clearly individuated at the top of a Late Pleistocene prograding wedge. The HST Holocene unit crops out at the sea bottom and is in part characterized by downward displacement related to creep-type process. This latter, constituted in the upper part by mud deposits, is interpreted as controlled by high sediment supply, high water contents and shallow gas pockets.File | Dimensione | Formato | |
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