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http://hdl.handle.net/2122/5131
Authors: | Di Bucci, D.* Ridente, D.* Fracassi, U.* Trincardi, F.* Valensise, G.* |
Title: | Marine paleoseismology from Very High Resolution seismic imaging: the Gondola Fault Zone (Adriatic foreland) | Journal: | Terra Nova | Series/Report no.: | 5/ 21 (2009) | Publisher: | Wiley - Blackwell | Issue Date: | 2009 | DOI: | 10.1111/j.1365-3121.2009.00895.x | Keywords: | Chirp-Sonar profiles fault reactivation right-lateral shear Adriatic Sea Italy |
Subject Classification: | 04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology 04. Solid Earth::04.04. Geology::04.04.04. Marine geology 04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating, processes, transport 04. Solid Earth::04.04. Geology::04.04.09. Structural geology 04. Solid Earth::04.06. Seismology::04.06.05. Historical seismology 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics |
Abstract: | We present a marine paleoseismology analysis of a dense network of very high resolution seismic profiles along the Gondola Fault Zone (GFZ), a right-lateral, E-W–striking, active fault system in the Adriatic foreland. This case-study aims to show how time and space variations in the activity of a dominantly right-lateral fault system can be assessed based on the vertical component of slip alone. The GFZ has been investigated for a length of 50 km. It includes two parallel subvertical fault sets and two main anticlines. The distribution of the late Middle Pleistocene to Holocene vertical component of displacement along-fault is bell-shaped, suggesting that in the long-term the fault zone acts as a single, kinematically coherent structure. Slip rates on individual fault segments, however, suggest that they may rupture independently. Vertical slip rates calculated for late Middle Pleistocene-Holocene intervals fall in a narrow range and are consistently small (0-0.18 mm/a). |
Appears in Collections: | Article published / in press |
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Di Bucci et al., 2009_accettato.pdf | 2.43 MB | Adobe PDF | View/Open |
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