New insights on the late Quaternary geologic evolution of the Ischia Island coastal belt based on high-resolution seismic profiles

Abstract

The study of the seismo-stratigraphic architecture of Late Quaternary-Holocene volcanic and sedimentary units in the Ischia Island offshore and their correlation with the coastal units of the adjacent onshore sectors allowed for a detailed reconstruction of the seismic stratigraphy of the northern, southern and western sectors of the island. Five (southern Ischia) to nine (western Ischia) seismic units and related seismic facies were identified. The volcanic areas and their detailed seismo-stratigraphic setting fit well in the geological context of a passive margin and confirm that the stratal architecture in the Ischia Island Quaternary marine deposits is controlled by the interaction between glacio-eustatic fluctuations, volcanism, tectonics and sedimentary supply.