Alberto Incoronato

University of Naples Federico II | UNINA · Department of Earth Sciences, Environment and Resources

A search for the Laschamp and Mono Lake excursions in cored marine and lacustrine sediment younger than 50,000 years resulted in the discovery of both excursions in the Greenland Sea (73.3˚ N, 351.0˚ E, Nowaczyk and Antanow, 1997), in the North Atlantic Ocean (62.7˚ N, 222.5˚ E, Channell, 2006), in Pyramid Lake in the Lahontan Basin, NV, USA (40.1˚...

First encountered in marine sediment cored from the Gulf of Mexico (19.5˚ N, 267.0˚ E)(Clark and Kennett, 1973), the Hilina Pali Excursion (HPE) is named for a locality in Hawaii (19.5˚ N, 205.0˚ E) where inclination of about negative 40˚ is documented in cored basalt (Teanby et al., 2002). Prior to naming the excursion, Coe et al. (1978) also foun...

Together, piston cores C1067, C1201 and C1202 from the continental shelf and slope in the Salerno Gulf and Cilento offshore in the Eastern Tyrrhenian Sea record long-term change (Paleomagnetic Secular Variation - PSV) of Earth's magnetic field during the last approximately 115,000 years. Each core contains the last 24,000 years except for the inter...

Detailed paleomagnetic and rock magnetic studies of 14 previously undated lava flows from the Somma-Vesuvius volcanic complex were undertaken. The magnetic carriers consist of Ti-poor titanomagnetites typified by pseudo-single domains. Characteristic magnetization directions determined from detailed stepwise alternating field and thermal demagnetiz...

Results are presented for a paleodirectional and paleointensity study of 16 Popocatepetl lava flows. Popocatepetl is a tall, active, dacitic-andesitic stratovolcano; it forms the southern end of a N-S-trending Quaternary volcanic range at the eastern edge of the Basin of Mexico. Studied units are mainly andesites and one trachyandestite, and all po...

The carbonate platforms of northeast Australia, the Great Barrier Reef province and the Eastern, Queensland, and Marion Plateaus, contain a record of the complex interactions between the factors that controlled carbonate deposition over the past 60 m.y. Analysis of the extensive geological and geophysical data shows that both long-term (plate motio...

Sediment in a 6-m gravity core from the Gulf of Salerno in the western Mediterranean Sea records long-term change (secular variation) of Earth's magnetic field during much of the last approximately 40,000 years. The age of the sediment is based on tephrochronology and correlation to the relative intensity in the NAPIS-75 (Laj et al., 2000) and SAPI...

The reliability of the Historical Italian Geomagnetic Data Catalogue, comprising 536 directions and 393 intensities, has been assessed by comparing the historical geomagnetic measurements with the GUFM1 model predictions. Such measurements were assessed at three selected relocation centres. For all the data contained in the Catalogue it has been ca...

The Jurassic Scisti Silicei Formation forms part of the Lagonegro superimposed tectonic units I and II that are thought to represent the axial and internal margins of the Mesozoic Lagonegro Basin, prior to nappe formation. Sampling was carried out in the lower (Lagonegro) and upper (Pignola) nappes in two differently oriented anticlines. Single and...

Secular variation ‘master’ curves are built up using geomagnetic historical observations or archaeomagnetic data from a limited area and their use is usually restricted to regions of around 1000 km radius. Relocation of data within this distance is a common practice to enable comparison of data, although the errors due to such process are rarely ta...

Detailed rock magnetic, paleomagnetic and absolute paleointensity studies of lava flows from the disputed 1631 Mount Vesuvius eruption are reported. The magnetic carrier consists of pseudo-single domain state Ti-poor titanomagnetites. Characteristic magnetization directions determined from detailed stepwise alternating field and thermal demagnetiza...

A palaeomagnetic study on Vesuvius lava flows, emplaced after the 79 AD event, has been carried out in order to correlate and/or discriminate deposits and to verify their age of emplacement using the new SISVC (Southern Italy secular variation curve). Results from 18 sites located on the W, S and E slopes of the volcano, are presented. IRM (isother...

Structural analysis of a short segment of the Lagonegro thrust nappe in the Lucania region (Southern Apennines, Italy), revealed two episodes of non-coaxial folding and thrusting (Dl, D2). The best developed mesoscopic structures found in the region trend NNW-SSE and are attributed to Miocene shortening (Dl). Minor distortion of earlier fold traces...

Was or was not effusive activity part of the 1631 eruption of Mount Vesuvius? We report on a detailed rock magnetic, paleomagnetic and absolute paleointensity study of lava flows from Mount Vesuvius and on its evidence concerning the enigmatic 1631 eruptive episode. Characteristic magnetization directions determined from detailed stepwise alternati...

Different procedures in terms of sampling techniques and data analyses for the magnetic stratigraphy studies carried out at Etna over the past twenty three years, are presented and discussed. Mean directions of magnetization of lava flows have been derived from Fisher statistics on the data obtained by three different methods: NRM measurements and...

In the last decade, the use of neural networks (NN) and of other soft computing methods has begun to spread also in the astronomical community which, due to the required accuracy of the measurements, is usually reluctant to use automatic tools to perform ...

Paleomagnetic and paleointensity studies on the volcanic units of the Popocatepetl complex are reported. Popocatepetl is one of the largest composite calc-alkaline active volcanoes of the magnetic arc, and it has been active since 1994. Studied units are mainly andesites and one trachyandestite, and all present similar trace and rare earth element...

Mean directions of magnetization from Mounts Arso (Ischia Island, Gulf of Naples), Etna and Vesuvius lava flows have been determined based on very stringent linearity criteria. These indicate that, regardless of the source volcano, the lava flow mean directions of magnetization form a common path, the SISVC (Southern Italy Secular Variation Curve)....

An interdisciplinary approach to the archaeological sites affected by Avellino (3750 yr. B.P.) and Pompei (79 A.D.) plinian eruptions of Somma-Vesuvius provides new data relative to the depositional mechanisms. Large scale stratigraphy and local evi- dences provide new informations about the physical conditions at the emplacement of PDCs and their...

The town of Herculaneum, lying at the foot of Mount Vesuvius on a cliff overlooking the sea, was buried by a succession of pyroclastic surges and flows (currents of volcanic ash and hot gases generated by collapse of the eruptive column) during the plinian eruption of AD 79. The skeletons of 80 of 300 people who had taken refuge in 12 boat chambers...

We report on a paleomagnetic and paleointensity study of volcanic units of the Popocatepetl volcanic complex, at the volcanic front of the Trans-Mexican volcanic belt. Popocatepetl is one of the largest composite calc-alkaline active volcanoes of the magnetic arc, and it has been active since 1994. It is formed by thick sequences of lava flows, tuf...

A magnetostratigraphic study has been performed on the paleontologically well constrained pelagic Middle Triassic (Lower/Upper Ladinian boundary) section at Margon (Trento, Southern Alps, Italy). Rock magnetic investigations indicate the presence of both, high and low coercivity minerals. Specimens subjected to progressive thermal demagnetization p...

The Campi Flegrei volcanic field, Southern Italy, is composed of a large variety of pyroclastic deposits related to both magmatic and hydromagmatic activity. In spite of similarities of composition, grain size, age and pre-eruptive environment, the various deposits exhibit great differences in terms of degree and type of alteration of the juvenile...

Within the framework of an extensive palaeomagnetic survey of Vesuvius products 67 sun-orientated samples from 5 lava flows, presumably emplaced in medieval times, have been collected in Torre del Greco: 3 flows from the lava flow sequence at the Villa Inglese quarry, stratigraphically below pyroclastics of AD 1631, and the remaining 2 from nearby...

Mean magnetisation directions from 6 lava flows of questionable historical age have been determined. The results, which are based upon very stringent linearity criteria during demagnetisation, point out erroneous dating and the corresponding lavas can be ascribed to medieval activity of Mount Etna, as already suggested for some of the investigated...

Two outcrops of Neapolitan Yellow Tuff at Torregaveta and Posillipo have been investigated palaeomagnetically. Analyses of low blocking temperature components, in association with mineralogical, volcanological and magnetic anisotropy data, suggest the following sequence of events: (i) deposition of pyroclastics at temperatures not lower than 275°C,...

A procedure involving stringent criteria for the definition of a linear vector, combined with visual assessment, is demonstrated to be essential for magnetic dating of volcanic lavas during historical times and that the partial demagnetization process must be extended to where the entire spectrum has been destroyed. As a result, it is demonstrated...

The stable component of the natural remanent magnetization (NRM) of the Upper Triassic 'Calcari con Selce' limestone formation at Marsico Nuovo (Lagonegro Basin, Southern Italy) has an inclination which is about 45 deg too steep for the expected paleogeographic position. In order to explain this abnormal magnetization direction, several rock magnet...

An extensive palaeomagnetic study has been undertaken to provide further elements leading to a better assessment of the volcanic history of the Vesuvius. This work refers to lavas for which the date of emplacement have recently been questioned; i.e. either during the period 968–1037 or in 1631. From 7 sites, 97 sun-orientated specimens have been co...

Flow regimes, depositional conditions and location of the sources for pyroclastic flows are difficult to study by conventional methods1,2. Magnetic fabric techniques have the advantage that they can be undertaken rapidly and precisely, the measurement of a single sample taking only a few minutes3. This study was of samples collected from the Quater...

Thesis (Ph. D.)--University of Newcastle upon Tyne, 1982.