Calcareous Nannofossil Biostratigraphy of Langhian Deposits in Lefkas (Ionian Islands)

Abstract

Spanochorion composite section (NE Lefkas) and Aghios Vassilios section (W Lefkas) (Martini, 1971) or MNN4b and MNN5a (Fornaciari and Rio, 1996)

Cephalonia-lefkas Transform Fault Zone (CLTFZ) Complexity: Insights from 2015 Lefkas Earthquake Sequence

“…7a.). Another scenario, which fits most of the results obtained by this study, is combined with previous knowledge based on GPS measurements [39], geophysical [40] geomorphological and tectonic elements at the southern part of Lefkas and the sea-bottom of Myrtos Gulf [13,7,38]. It includes two major fault zones, the CLTFZ and Ithaca-Lefkas (ILFZ), converging in the area of Vassiliki bay forming en-enchelon arrays of WNW-ESE minor faults and fractures, separated by smaller NE-SW strike-slip faults in between (Fig.…”

“…Thus, the perpendicular secondary fault system of the latter model has to be prolonged towards the north, up to the southern part of Lefkas. In that case, the negative flower structure model, proposed by [20], could be adjusted by making a double leftbend which explains lots of the superficial geological and geomorphological features at the SW edge of Lefkas [13,37,7,38]. The advantage of this model is that it explains the observed seismicity south of Lefkas, while its disadvantage is the steep bending of the main part of the fault zone which is not compatible with the rupture process of the mainshock (Fig.…”

Field Observations of the 2015 (November 17, Mw 6.4) Lefkas (Ionian Sea, Western Greece) Earthquake Impact on Natural Environment and Building Stock of Lefkas Island

“…Lefkas comprises (a) alpine formations that belong to Ionian and Paxoi (Pre-Apulian) geotectonic units, (b) molassic formations and (c) recent deposits that lie unconformably on the previous formations (Renz, 1955;Bornovas, 1964;BP, 1971;Lekkas et al, 1999Lekkas et al, , 2001Rondoyanni 1997;Triantafyllou, 2010;Rondoyanni et al, 2012) (Fig. 2a).…”

“…2a). The molassic formations of Lefkas comprise mostly marine Aquitanian-Tortonian (Bornovas, 1964;Lekkas et al, 2001) marls, bioclastic limestones, conglomerates and sandstones that are unconformably overlying the deformed Ionian formations and few outcrops of Ionian flysch turbidites (Cushing, 1985;Rondoyanni, 1997;Triantafyllou, 2010). Molassic formations can be seen in northeastern Lefkas, especially in the areas of Karya, Lazarata and Katouna villages, in the area north of Nydri and in southern Lefkas in a narrow elongated zone between Vassiliki and Nydri villages ( Fig.…”

Biostratigraphy and paleoceanography of warm and high atmospheric CO2 events of the cenozoic at the island of Cyprus (Eastern Mediterranean)

“…heteromorphus corresponding to Base absence (Ba) bioevent of Backamn et al (2012). This interval of virtual absence or reduced abundance ("paracme") of S. heteromorphus distribution range is well documented in several Langhian Mediterranean sections (e.g., Di Stefano et al 2008;Triantaphyllou, 2010), representing a useful and reliable correlation tool within the Mediterranean Miocene sediments (Di . Interestingly, proportions of S. heteromorphus from 14.6 m and upwards continue to be intensively reduced.…”