Considerations on the seismotectonics of the Northern Apennines

Boccaletti, M.; Coli, Massimo; Eva, C.; Ferrari, Graziano; Giglia, G.; Lazzarotto, A.; Merlanti, F.; Nicolich, R.; Papani, G.; Postpischl, D.

doi:10.1016/0040-1951(85)90234-3

Cited by 97 publications

(51 citation statements)

References 8 publications

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“…Between the Langhian and the Serravallian the NW Apennine were undergoing roughly NE-SW shortening, responsible for the emplacement of the Ligurian units on to the Modino-Cervarola and Umbro-Marchean units (Pedeapennine Thrust Front, Boccaletti et al 1985). On the western margin of the TPB in Middle Miocene to Pliocene times, active tectonic shortening was responsible (Saluzzo Basin; Fig.…”

Section: The Tpb and Its Regional Contextmentioning

confidence: 99%

Subsidence, stress regime and rotation(s) of a tectonically active sedimentary basin within the western Alpine Orogen: the Tertiary Piedmont Basin (Alpine domain, NW Italy)

Carrapa

Bertotti

Krijgsman

2003

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The Oligocene to Miocene Tertiary Piedmont Basin (TPB) is located in the NW part of Italy at the junction between the Apennine and the Alpine thrust belts. The position of the TPB on top of the Alpine/Apennine Orogen poses fundamental questions as to the tectonics of the basin subsidence. Having undergone little deformation, the TPB sediments provide an insight into the stress regime and rotations in the kinematically very complex area surrounding the basin itself. In this study we integrate subsidence and structural analysis with measurements of magnetic susceptibility anisotropy (AMS) and natural remanent magnetization (NRM) in order to better constrain the tectonic kinematics of the basin evolution. A major important period of subsidence occurred in the Middle Miocene involving the whole basin. During this period the TPB experienced NE-SW-directed compression and limited shortening. Some NW-SE-directed compressional features have been identified and they were probably active during post Tortonian times. Structures associated with north-south tension are quite common, but the amount of strain that they accommodate is minor. In addition this research provides new preliminary data suggesting counterclockwise rotation in the TPB by c. 20° which has taken place during Middle Miocene time.

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Section: The Tpb and Its Regional Contextmentioning

confidence: 99%

Subsidence, stress regime and rotation(s) of a tectonically active sedimentary basin within the western Alpine Orogen: the Tertiary Piedmont Basin (Alpine domain, NW Italy)

Carrapa

Bertotti

Krijgsman

2003

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“…Hot spot 11 (Figure 10) is located downstream near the eastern flank of Secchia river valley. This area is marked by a rather continuous NNEverging and SSW-dipping thrust system (Boccaletti et al, 1985). Historical and instrumental seismicity distribution (Castello et al, 2006) and the dominant reverse earthquake focal solutions (Pondrelli et al, 2006) suggest that frontal thrusts and lateral thrust ramps are potentially seismogenic (Selvaggi et al, 2001;Boccaletti et al, 1985Boccaletti et al, , 2004aCalderoni et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Appraisal of active tectonics using DEM-based hypsometric integral and trend surface analysis in Emilia-Romagna Apennines, northern Italy

Siddiqui¹,

Soldati²

2014

Turkish J Earth Sci

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The hypsometric integral (HI) has generally been used to explain the stages of landscape evolution and erosional processes. It is an important tool to investigate tectonics and lithologic and climatic effects on topographic change. We analyzed the significance of the HI to investigate active tectonics in the Emilia-Romagna Apennines of northern Italy. We used a digital elevation model of 5-m spatial resolution to calculate grid-based HI values. The HI distribution does not show clear spatial patterns of high and low HI values. However, when statistical methods of local indices of spatial autocorrelation were applied, it was possible to identify clear clusters of high and low HI values. Trend surface analysis (TSA) was carried out to distinguish areas with anomalously high and low elevations, and to observe their spatial correlation with the HI and regional geological structures. The results indicate that the high HI values and TSA anomalies are positively correlated with the areas of high tectonic activity and along the regional tectonic structures

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“…In particular, the focal mechanism of the earthquake shows the main compression in a North-South direction, with fault planes oriented from east to west. At this location, the geology is dominated by compression tectonics forming thrust-belt type structure like the Appenine mountains that dominate the Italian peninsula [Boccaletti et al, 1985;Toscani et al], 2008]. From the historical seismicity reports of the region, it was found that a strong earthquake occurred between November 16 and 17, 1570 [Rovida et al, 2009].…”

Section: Tectonics and Historical Seismicitymentioning

confidence: 99%

Seismic Performance of Industrial Sheds and Liquefaction Effects During May 2012 Emilia Earthquakes Sequence in Northern Italy

Cimellaro

Chiriatti

Roh

et al. 2014

J. Earthquake and Tsunami

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On May 20, 2012 at 2:03 UTC, a Mw 6.1 earthquake occurred in Emilia Region of Northern Italy. The event was preceded by a Ml 4.1 foreshock on May 19, 2012 at 23:13 UTC, and followed by several aftershocks, twenty of them with a magnitude Mw greater than 4. The epicentral area of the seismic sequence covers alluvial lowland that is occupied by both agricultural and urbanized areas. Liquefaction effects were observed in several villages on the west side of Ferrara which were built upon former river beds such as the Reno River. The Emilia seismic sequence resulted in 27 casualties, several of whom were among the workers in the factories that collapsed during working hours, and there was extensive damage to monuments, public buildings, industrial sites and private homes. Almost no municipalities hit by 2012 earthquake were classified as seismic area before 2003; therefore, most of the existing structures had been designed without taking in account the seismic actions. The main aims of MCEER field mission was to document the emergency response and the most common damage mechanisms of industrial sheds during Emilia earthquake sequence which are shown and discussed in detail.

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Considerations on the seismotectonics of the Northern Apennines

Cited by 97 publications

References 8 publications

Subsidence, stress regime and rotation(s) of a tectonically active sedimentary basin within the western Alpine Orogen: the Tertiary Piedmont Basin (Alpine domain, NW Italy)

Subsidence, stress regime and rotation(s) of a tectonically active sedimentary basin within the western Alpine Orogen: the Tertiary Piedmont Basin (Alpine domain, NW Italy)

Appraisal of active tectonics using DEM-based hypsometric integral and trend surface analysis in Emilia-Romagna Apennines, northern Italy

Seismic Performance of Industrial Sheds and Liquefaction Effects During May 2012 Emilia Earthquakes Sequence in Northern Italy

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