Plio-Quaternary Deformations within the North Evia Domain (Greece) in the Western Prolongation of the North Anatolian Fault: Insights from Very-High-Resolution Seismic Data (Water Surveys)

Caroir, Fabien; Chanier, Frank; Gaullier, Virginie; Sakellariou, Dimitrios; Bailleul, Julien; Maillard, Agnès; Paquet, Fabien; Watremez, Louise; Averbuch, Olivier; Graveleau, Fabien; Ferrière, Jacky

doi:10.2139/ssrn.4341779

Cited by 2 publications

(3 citation statements)

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“…Arkitsa (AFZ in Figure 1) and the Aedipsos fault system (AFS in Figure 1) which currently appears to involve significant strike-slip component (Caroir et al, 2023). In conjunction with other smaller structures onshore NW Evia island as well as offshore within the north Evia Gulf which are also characterized by oblique-to strike-slip kinematics (Ganas et al, 2016), we conclude that the maximum shear strain rates resolved in this region imply a significant amount of oblique extension.…”

Section: Maximum Shear Strain Ratesmentioning

confidence: 78%

“…These locations comprise active rift systems where extension is accommodated by a combination of localized dilatation (see Figure 3a) and shear deformation. Of particular interest is the former region, where shear strain rates are mainly associated with the normal fault zone of Arkitsa (AFZ in Figure 1) and the Aedipsos fault system (AFS in Figure 1) which currently appears to involve significant strike‐slip component (Caroir et al., 2023). In conjunction with other smaller structures onshore NW Evia island as well as offshore within the north Evia Gulf which are also characterized by oblique‐ to strike‐slip kinematics (Ganas et al., 2016), we conclude that the maximum shear strain rates resolved in this region imply a significant amount of oblique extension.…”

Section: Quantification Of Geodetic Deformation Ratesmentioning

confidence: 99%

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The Upper Crustal Deformation Field of Greece Inferred From GPS Data and Its Correlation With Earthquake Occurrence

Chousianitis,

Sboras,

Mouslopoulou

et al. 2024

JGR Solid Earth

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We present a new geodetic strain rate and rotation rate model for Greece that has been derived using a highly dense GPS velocity field. The spatial distribution and the resolved rates of the various velocity gradient tensor quantities provided updated constraints on the present‐day upper crustal deformation in the region and revealed new details not reported previously. The spatial distribution of the second invariant demonstrated that the overall magnitude of strain rates is highest across two well‐defined provinces. The first follows the North Anatolian Fault and its two branches within the north Aegean, crosses central Greece and through the Gulf of Corinth it terminates in western Greece, while the second encompasses the extensional province of western Turkey and the eastern Aegean Sea islands. Our estimates revealed that shearing affects some of the fault‐bounded grabens of central Greece that lie to the SW of the North Aegean Basin implying considerable oblique extension. We identified a narrow region of counterclockwise rotation whose location and kinematics have been induced by the net effect across the intersection of the clockwise rotating domains of western and central Greece. The Aegean microplate and the Anatolian plate are separated by a wide transition zone which accommodates the curved stretching of the entire plate system. In both edges of the Hellenic forearc the dominant mode of crustal strain is E‐W extension. We found that earthquakes of M ≥ 5.6 are spatially well‐correlated with high‐strain areas, indicating that strain rate mapping could be used to inform future probabilistic seismic hazard analyses.

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Section: Maximum Shear Strain Ratesmentioning

confidence: 78%

Section: Quantification Of Geodetic Deformation Ratesmentioning

confidence: 99%

The Upper Crustal Deformation Field of Greece Inferred From GPS Data and Its Correlation With Earthquake Occurrence

Chousianitis,

Sboras,

Mouslopoulou

et al. 2024

JGR Solid Earth

View full text Add to dashboard Cite

show abstract

“…Its sedimentary filling is mainly composed of lacustrine and fluvial deposits [Dermitzakis andPapanikolaou, 1981, Kranis, 2007] that are controlled by the development of large normal fault systems on both sides: the Kallidromon-Atalanti Fault to the south (KAF, Figure 3) and the Kamena Vourla-Arkitsa Fault System to the north (KVAFS, Figure 3). Both fault systems express an Uppermost Miocene to Early Pliocene extensional regime along the NNE-SSW direction [Caroir et al, 2024, Kranis, 2007.…”

Section: Geological Settingmentioning

confidence: 99%

The Main Pelagonian Detachment (MPD): extensional reactivation of the frontal thrust of the Internal Zones of the Hellenides (Greece)

Chanier,

Ferrière,

Averbuch

et al. 2024

Comptes Rendus. Géoscience

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During the orogenic development of the Hellenides, the "Frontal Thrust of Internal Zones" (FTIZ) localised tectonic superposition of the Internal Zones over the External Zones. The belt was subsequently subject to a major extensional deformation responsible for a negative tectonic inversion of the FTIZ, along a major detachment called here "Main Pelagonian Detachment" (MPD). The along-strike changes in the geometry and the kinematics of the MPD suggest different tectonic configurations largely inherited from the flat-ramp-flat initial geometry of the thrust. The distribution of the recent basins, mainly located within the Internal Zones, illustrates the major role of the FTIZ reactivation in the overall collapse of Internal Hellenides.

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Plio-Quaternary Deformations within the North Evia Domain (Greece) in the Western Prolongation of the North Anatolian Fault: Insights from Very-High-Resolution Seismic Data (Water Surveys)

Cited by 2 publications

References 0 publications

The Upper Crustal Deformation Field of Greece Inferred From GPS Data and Its Correlation With Earthquake Occurrence

The Upper Crustal Deformation Field of Greece Inferred From GPS Data and Its Correlation With Earthquake Occurrence

The Main Pelagonian Detachment (MPD): extensional reactivation of the frontal thrust of the Internal Zones of the Hellenides (Greece)

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