Regional magnetic and gravity anomaly correlations of the Southern Tyrrhenian Sea

Ritis, R. De; Ventura, Guido; Chiappini, M.; Carluccio, R.; Frese, Ralph von

doi:10.1016/j.pepi.2010.04.003

Cited by 15 publications

(6 citation statements)

References 48 publications

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“…1c) between the Aeolian arc and the Capo Vaticano (hereafter CV) promontory has been documented on the basis ofed on seismic profiles (Trincardi et al, 1987) and multibeam bathymetric data (Loreto et al, 2012). Its location position coincides with a distinct magnetic anomaly detected in a the general context of a very low regional magnetic anomaly field (De Ritis et al, 2010a, Caratori et al, 2004, Chiappini et al, 2000. Based on the results of inverse and direct modeling of aeromagnetic data, the magnetic signature of the CV seamount was first was interpreted as a crystallized volcanic plumbing system (De Ritis et al, 2010b).…”

Section: Introductionsupporting

confidence: 72%

Geophysical investigation of Pleistocene volcanism and tectonics offshore Capo Vaticano (Calabria, southeastern Tyrrhenian Sea)

Loreto

Pepe

Ritis

et al. 2015

Journal of Geodynamics

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Section: Introductionsupporting

confidence: 72%

Geophysical investigation of Pleistocene volcanism and tectonics offshore Capo Vaticano (Calabria, southeastern Tyrrhenian Sea)

Loreto

Pepe

Ritis

et al. 2015

Journal of Geodynamics

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“…Based on the analysis of the depth variation of the edges of Infralittoral Prograding Wedges, Pepe et al (2014) documented difference in the post-Last Glacial Maximum vertical tectonic movements between the SW and NE offshore sectors of the Capo Vaticano promontory (western Calabria, southern Italy). Offshore of Capo Vaticano promontory, Pleistocene intrusive, and off-arc volcanic activities occurred (De Ritis et al, 2010;Loreto et al, 2015). The uprising of magma was favoured by Pliocene NW-and Pleistocene NE-trending normal fault systems.…”

Section: The Lamezia-catanzaro System and Surroundings Offshore Areasmentioning

confidence: 99%

An Integrated Multiscale Method for the Characterisation of Active Faults in Offshore Areas. The Case of Sant’Eufemia Gulf (Offshore Calabria, Italy)

et al. 2021

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Diagnostic morphological features (e.g., rectilinear seafloor scarps) and lateral offsets of the Upper Quaternary deposits are used to infer active faults in offshore areas. Although they deform a significant seafloor region, the active faults are not necessarily capable of producing large earthquakes as they correspond to shallow structures formed in response to local stresses. We present a multiscale approach to reconstruct the structural pattern in offshore areas and distinguish between shallow, non-seismogenic, active faults, and deep blind faults, potentially associated with large seismic moment release. The approach is based on the interpretation of marine seismic reflection data and quantitative morphometric analysis of multibeam bathymetry, and tested on the Sant’Eufemia Gulf (southeastern Tyrrhenian Sea). Data highlights the occurrence of three major tectonic events since the Late Miocene. The first extensional or transtensional phase occurred during the Late Miocene. Since the Early Pliocene, a right-lateral transpressional tectonic event caused the positive inversion of deep (>3 km) tectonic features, and the formation of NE-SW faults in the central sector of the gulf. Also, NNE-SSW to NE-SW trending anticlines (e.g., Maida Ridge) developed in the eastern part of the area. Since the Early Pleistocene (Calabrian), shallow (<1.5 km) NNE-SSW oriented structures formed in a left-lateral transtensional regime. The new results integrated with previous literature indicates that the Late Miocene to Recent transpressional/transtensional structures developed in an ∼E-W oriented main displacement zone that extends from the Sant’Eufemia Gulf to the Squillace Basin (Ionian offshore), and likely represents the upper plate response to a tear fault of the lower plate. The quantitative morphometric analysis of the study area and the bathymetric analysis of the Angitola Canyon indicate that NNE-SSW to NE-SW trending anticlines were negatively reactivated during the last tectonic phase. We also suggest that the deep structure below the Maida Ridge may correspond to the seismogenic source of the large magnitude earthquake that struck the western Calabrian region in 1905. The multiscale approach contributes to understanding the tectonic imprint of active faults from different hierarchical orders and the geometry of seismogenic faults developed in a lithospheric strike-slip zone orthogonal to the Calabrian Arc.

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“…Through comparison of the results using these methods, regularized filtering was selected since its results provided a better fit to the regional geology (especially the sedimentary cover) and seismic data. To analysis the origins of the regional gravity and magnetic anomalies, correlation analysis (Cohen, 1981;von Frese et al, 1997;de Ritis et al, 2010) was used.…”

Section: Data Processing Methods and Techniquementioning

confidence: 99%

A Genesis Analysis of the Regional Gravity and Magnetic Anomalies in the Northern Part of Eastern Xinjiang, Northwest China

Zhang

Dong

2014

Petroleum Science and Technology

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The authors discuss the genesis of the regional gravity and magnetic anomalies in the northern part of Eastern Xinjiang, a correlation analysis was carried out between the regional gravity anomaly and the regional magnetic anomaly. Through data processing and integrated interpretation of the gravity and magnetic data in the study area, the Bouguer gravity anomaly and the magnetic anomaly by reduction to the pole were separated. Then, the regional gravity and magnetic anomalies across multiple scales were extracted; in addition, the correlation coefficients between the regional gravity anomaly and the regional magnetic anomaly at different scales were calculated. Finally, the features of the gravity and magnetic fields, their geological significance, and the origins of these regional gravity and magnetic anomalies were analyzed. The results showed that the regional negative gravity anomaly in the Turpan-Hami basin and the Santanghu basin was mainly caused by Cenozoic and Mesozoic strata; the regional positive magnetic anomaly was mainly caused by the Precambrian metamorphic basement. The study revealed that the regional positive gravity and magnetic anomalies resulted from the crust and the mantle substances in the eastern part of the Junggar basin. While the regional positive gravity anomaly was mainly caused by Pre-Mesozoic strata, and the regional negative magnetic anomaly by the sedimentary formation and intermediate acid rocks in the Bogeda-Harlike folded zone and the Jueluotage anticlinorium. The regional negative gravity and magnetic anomalies in the active zone of the northern margin of Tarim were mainly caused by the sedimentary formation and intermediate acid rocks.

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Regional magnetic and gravity anomaly correlations of the Southern Tyrrhenian Sea

Cited by 15 publications

References 48 publications

Geophysical investigation of Pleistocene volcanism and tectonics offshore Capo Vaticano (Calabria, southeastern Tyrrhenian Sea)

Geophysical investigation of Pleistocene volcanism and tectonics offshore Capo Vaticano (Calabria, southeastern Tyrrhenian Sea)

An Integrated Multiscale Method for the Characterisation of Active Faults in Offshore Areas. The Case of Sant’Eufemia Gulf (Offshore Calabria, Italy)

A Genesis Analysis of the Regional Gravity and Magnetic Anomalies in the Northern Part of Eastern Xinjiang, Northwest China

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