Vito Summa

Research Field

Bottom water production variability in the Ross Sea slope during the Late Pleistocene-Holocene as revealed by benthic foraminifera and sediment geochemistry

EGU General Assembly Conference Abstracts (2010)

Leonardo Langone Alessandra Asioli Fabio Tateo Federico Giglio Domenico Ridente

(1) Istituto Scienze Marine-CNR, Bologna, Italy (leonardo.langone@bo.ismar.cnr.it/390516398940), (2) Istituto di Geoscienze e Georisorse-CNR, Padova, Italy (alessandra.asioli@igg.cnr.it,/390498272010), (3) Istituto di Geologia Ambientale e Geoingegneria-CNR, Roma, Italy (domenico.ridente@cnr.it), (4) Istituto di Metodologie per l’Analisi Ambientale-CNR, Potenza, Italy (summa@imaa.cnr.it), (5) Dipartimento di Geoscienze, Universita di Padova, Italy (a.carraro@unipd.it), (6) ENI E&P Division, Sedimentology, Petrography & Stratigraphy Dpt., S. Donato Milanese, Italy (Andrea.Piva@eni.it)

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Provenance and tectonic implications of heavy minerals in Pliocene-Pleistocene siliciclastic sediments of the southern Apennines, Italy

Sedimentary Geology (1997)

Pasquale Acquafredda Annamaria Fornelli G. Piccarreta Vito Summa

Siliciclastic

Staurolite

Detritus

10.1016/s0037-0738(97)00051-1

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Citations (13)

Geochemical and mineralogical proxies for grain size in mudstones and siltstones from the Pleistocene and Holocene of the Po River alluvial plain, Italy

Geological Society of America eBooks (2007)

Enrico Dinelli Fabio Tateo Vito Summa

Recent studies carried out on fine-grained sediments recovered from boreholes in the eastern plain of the Po River demonstrate that significant mineralogical and geochemical changes in the provenance of sediments occurred in coincidence with the Pleistocene-Holo-cene transition. An increase in ultramafic-sourced sediment, related to more important inputs from the Po River, is evident at the beginning of the Holocene. The effects of grain-size distribution and provenance variation were investigated on recent unconsolidated sediments, mainly silts and clays. Sediments were collected from ten boreholes in the area, and the geochemical and mineralogical data were compared to the grain-size data. Among the chemical indexes, Zr/V, Y/Rb, Y/V, SiO2/Al2O3, Fe2O3/SiO2, Na/Al increase from pure clay to fine sand together with some mineralogical ratios, including quartz/interstratified illite-smectite and feldspar/interstratified illite-smectite. Some provenance indexes, both mineralogical and geochemical (Ni/Al, Cr/Al, serpentine/sheet silicates), were found to be independent from grain-size and are therefore valid for a wide textural range of sediments. Several geochemical and mineralogical proxies for grain size were identified. In the present case, all these indexes are independent from provenance influence and can be used as direct proxies for the grain size of the sediment, as confirmed by the multiple regression analysis performed to evaluate median and sorting. The equations included the most significant ratios and work well for median values <30 μm.

Illite

10.1130/2007.2420(03)

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Citations (51)

Clay minerals as adsorbents of aflatoxin M1 from contaminated milk and effects on milk quality

Applied Clay Science (2013)

Anna Carraro Alessandro De Giacomo Maria Luigia Giannossi L. Medici Marilena Muscarella

Bentonite

Saponite

10.1016/j.clay.2013.11.028

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Citations (81)