a sedimentological record of early miocene ice advance and retreat and 2a drill hole mcmurdo sound antarctica

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Provenance of basement erratics in Quaternary coastal moraines, southern McMurdo Sound, and implications for the source of Eocene sedimentary rocks

This paper summarizes fieldwork conducted in 2007 and presents results of petrographical analyses of basement rocks that occur along with fossil-rich Eocene sedimentary erratics in moraines along the north-east flank of Mount Discovery in southern McMurdo Sound. The Eocene rocks are significant as they provide a rare glimpse into greenhouse environments at high southern latitudes. Basement erratics recovered from the moraines are petrographically similar to metamorphic and igneous rocks exposed in the Transantarctic Mountains at locations between the Carlyon and Skelton glaciers and/or within the drainage catchments of Mulock and Skelton glaciers. These new clast provenance data imply that the Eocene sedimentary erratics are most likely derived from outcrops that are currently located beneath the Ross Ice Shelf south and/or immediately east of Minna Bluff. The suite of basement and sedimentary erratics were transported to their present location by ice that flowed north-eastwards from the Skelton-Mulock region and was pushed westwards into southern McMurdo Sound by grounded ice flowing north from West Antarctica. Results from this study support prior reconstructions of ice flow during peak glacial intervals during the Miocene–Pleistocene including the Last Glacial Maximum

La problematica del "setting" psicologico nel trattamento del tossicodipendente

La problematica del setting psicologico nel trattamento del tossicodipendent

Glacial Stress Field Orientation Reconstructed through Micromorphology and mX-Ray Computed Tomography of Till

Detailed laboratory analyses largely support field studies on the petrology of glacial materials. In particular, detailed structural analysis of glacial sediments helps reconstruct the presence, orientation and intensity of glacial stress fields. This pilot study compares thin-section micromorphology (two-dimensional observation under a microscope) and mX-Ray computed tomography (mXR-CT, three-dimensional observation involving data collection and subsequent processing) to evaluate the potential of the latter technique to yield reliable data. The location and stratigraphy of sampling sites are reported for a complete presentation. Results are encouraging: compared with thinsection micromorphology, mX-Ray computed tomography yielded results that are more detailed, reproducible and unaffected by cutting orientation. Moreover, mXR-CT is easily applied to incoherent materials, brittle samples and unique specimens

L'incidenza dell'abuso nelle intossicazioni e nei decessi alcool correlati: esperienza decennale della città e provincia di Ferrara

Analisi retrospettiva di dati laboristici alcoolimetrici relative ad intossicazioni acute e a decessi alcool correlati su conducenti nel periodo Gennaio 2000, Aprile 200

VALUTAZIONE DELL'IDONEITA' A MANSIONI LAVORATIVE A RISCHIO IN BASE ALLA n.99/cu DEL 30 OTTOBRE 2007 (G.U. 15 novembre 2007 n.266)

mansioni lavorative a rischi

Fentanyl determination in 59 hair samples by GC-MS-MS

(Poster presentato al XVI Convegno Nazionale) A seguito di trafugamento di fiale di Fentanest presso il reparto di un'Azienda Ospedaliera sono state eseguite analisi chimico-tossicologiche mediante GC-MS-MS su tutti i 59 dipendenti ospedalieri che potevano avere accesso al farmaco