La serie marina olocenica di Cafieri (Isola d'Ischia): implicazioni vulcano-tettoniche e geomorfologiche

Abstract

The Holocene marine sediments outcropping at Cafieri, along the north-eastern coast of the Ischia island have been studied in order to define sedimentation environment, age, and relationships with the surrounding volcanic formations. The studied section, constituted by stratified tufites, ends upwards with a beach, previously attributed to the first part of the VIII century B.C., corresponding to an uplifted marine erosion surface, fossilized by pyroclastic and lava formations. A second uplift displayed a 2nd order erosion surface, subdivided into two, bordering the Cafieri outcrop. The age of the sediments as obtained with the Radiocarbon method applied to the fauna of the tufites, is less than 10,000 years B.P. The sedimentation environment as established by means of benthic foraminifers and ostracods assemblage, corresponds to a depth range between -50 and -80 m.