Late Quaternary evolution of the Gulf of Patras, Greece: Tectonism, deltaic sedimentation and sea-level change

Chronis, G.; Piper, David J. W.; Anagnostou, Ch.

doi:10.1016/0025-3227(91)90026-z

Cited by 80 publications

(45 citation statements)

References 10 publications

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“…These surfaces are interpreted as transgressive Holocene surfaces developed on top of thick paleodeltas, probably built during the LGM lowstand. Such an interpretation is in agreement with previously published studies (Chronis et al, 1991;Collier et al, 2000;McNeill et al, 2005a;Cotterill, 2006;Lykousis et al, 2007a;Sakellariou et al, 2011). North of the Trizonia Scarp, below these deltas, an older fluvio-deltaic system located 38 to 50 m below R1 is identified ( Fig.…”

Section: Seismic Stratigraphysupporting

confidence: 93%

Active faulting at the western tip of the Gulf of Corinth, Greece, from high-resolution seismic data

et al. 2015

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International audienceThe Gulf of Corinth is one of the fastest-spreading intra-continental rifts on Earth. GPS data indicate that the rift is currently opening in a NNE-SSW direction, with a rate of extension reaching up to 16 mm yr (super - 1) in its westernmost part. Although the rest of the offshore rift has been well studied, the western tip of the rift is still poorly explored. We present an accurate map of submarine faults in this area based on two high-resolution seismic reflection surveys (single-channel sparker). In the eastern part of the studied area, the sedimentary infill is affected by the known North Eratini, South Eratini, and West Channel faults. Further to the west, the seafloor is mostly flat and is bounded to the north by the normal, south-dipping, Trizonia fault. To the north, the shallower part of the Gulf shows to the east a diffuse pattern of normal and strike-slip deformation, which is replaced to the west by a 7.5 km long SE striking strike-slip fault zone, called the Managouli fault zone. To the westernmost tip of the Gulf, in the Nafpaktos Basin, two fault sets with different strikes are encountered; the one with a NE-SW strike exhibits a clear strike-slip component. The western tip of the Gulf of Corinth is the only part of the Corinth Rift where convincing evidence for strike-slip movement has been found. This fault pattern is likely related to the complex deformation occurring at the diffuse junction at the western tip of the Rift between three crustal blocks: Continental Greece, Peloponnese, and the Ionian Island-Akarnania block

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Section: Seismic Stratigraphysupporting

confidence: 93%

Active faulting at the western tip of the Gulf of Corinth, Greece, from high-resolution seismic data

et al. 2015

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“…This depocentre migration was accompanied by rapid uplift of the southern side of the basin (0.6 cm/yr according to Kontopoulos and Zelilidis (1997); up to 1000 m according to Doutsos and Piper (1990); and up to 1700 m above present sea-level, according to Seger and Alexander (1993)). Holocene net vertical slip on the central graben of the Patras sub-basin is about 3-5 mm/yr, and on its northern and southern margins is about 12 mm/yr (Chronis et al 1991).…”

Section: Introductionmentioning

confidence: 99%

The geometry of fan‐deltas and related turbidites in narrow linear basins

Zelilidis

2003

Geological Journal

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The sediment distribution in three narrow, linear basins, two modern and one ancient, in Greece and Italy, was studied and related to changes in basin configuration. The basins are the Plio-Quaternary Patras-Corinth graben, the Pliocene-Quaternary Reggio-Scilla graben and the middle Tertiary Mesohellenic piggy-back basin. These basins were formed at different times and under different geodynamic conditions, but in each case, the tectonic evolution produced a narrow area in the basin where the water depth decreased dramatically, forming a strait with a sill. This strait divided the basin into major and minor sub-basins, and the strait has a similar impact on sedimentary environments in all three basins, even though different depositional environments were formed along the initial basin axis.Predictions for the development of depositional environments in the two modern basins, especially in their straits, are based on the studied ancient basin. In the straits, powerful tidal flows will transport finer sediments to sub-basins and trapezoidal-type fan-deltas will gradually fill up and choke the strait through time. In sub-basins, according to basin depth, either deltaic (in the shallow minor sub-basin) or turbiditic (in the deep major sub-basin) deposits may accumulate. Moreover, an extensive shelf is likely to develop between the strait and major sub-basin. This shelf will be cross-cut by canyons and characterized by thin fineto coarse-grained deposits. These sediment models could be applied to analogous basin geometries around the world.

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“…Holocene net vertical slip on the central parts of Patras basin is about 3-5 mm/yr, while on its northern and southern margin is about 1.2 mm/yr [34]. Rifting in the Patras area may have initiated some 1.3-1.5 Ma ago [35]. [50].…”

Section: Patrasmentioning

confidence: 99%

Detection and Monitoring of Active Faults in Urban Environments: Time Series Interferometry on the Cities of Patras and Pyrgos (Peloponnese, Greece)

et al. 2009

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Abstract:Monitoring of active faults in urban areas is of great importance, providing useful information to assess seismic hazards and risks. The present study concerns the monitoring of the potential ground deformation caused by the active tectonism in the cities of Patras and Pyrgos in Western Greece. A PS interferometric analysis technique was applied using a rich data-set of ERS-1 & 2 SLC images. The results of the interferometric analysis were compared with the tectonic maps of the two cities. Patras show clearer uplift-subsidence results due to the more distinct fault pattern and intense deformation compared to the Pyrgos area, where more diffused deformation is observed, with no significant displacements on the surface.

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Late Quaternary evolution of the Gulf of Patras, Greece: Tectonism, deltaic sedimentation and sea-level change

Cited by 80 publications

References 10 publications

Active faulting at the western tip of the Gulf of Corinth, Greece, from high-resolution seismic data

Active faulting at the western tip of the Gulf of Corinth, Greece, from high-resolution seismic data

The geometry of fan‐deltas and related turbidites in narrow linear basins

Detection and Monitoring of Active Faults in Urban Environments: Time Series Interferometry on the Cities of Patras and Pyrgos (Peloponnese, Greece)

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