Please use this identifier to cite or link to this item: https://hdl.handle.net/10593/11036
Title: Soft-sediment deformation structures in seismically affected deep-sea Miocene turbidites (Cilento Basin, southern Italy)
Authors: Valente, Alessio
Ślączka, Andrzej
Cavuoto, Giuseppe
Keywords: High-density turbidites
Soft-sediment deformation structures
Seismites
Apennines
Cilento Group
Miocene
Italy
Issue Date: 30-Jun-2014
Publisher: Bogucki Wydawnictwo Naukowe
Citation: Geologos, 2014, 20, 2, s. 67-78
Abstract: Soft-sediment deformation structures (SSDS) are widespread in the upper part of the S. Mauro Formation (Cilento Group, Middle-Late Miocene). The succession is represented mainly by thick and very thick, massive, coarse-grained sandstones, deposited by rapid sedimentation of high-density turbidity currents. The most common SSDS are short pillars, dishes, sedimentary sills and convolutions. They occur mostly in the upper parts of sandstone beds. Vertical tubes of 4–5 cm in diameter and up to 50 cm long constitute the most striking structures. They begin in the middle part of sandstone beds, which are basically massive or contain faint dish structures. These tubes can bifurcate upwards and/ or pass into bedding-parallel veins or dikes. The vertical tubes sometimes form sand volcanoes on the then sedimentary surface. The SSDS are interpreted as the result of earthquake-triggered liquefaction and/or fluidisation of the turbidites that were affected by the seismic shocks. This implies that the deformed layers should be considered as seismites.
URI: http://hdl.handle.net/10593/11036
ISBN: 978-83-232187-4-6
ISSN: 1426-8981
Appears in Collections:Geologos, 2014, 20, 2

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