Seminario

Aragonite in contesti archeologici: applicazioni per lo studio della pirotecnologia antica

Data: 
Giovedì, 5 Marzo, 2015 - 16:30
Aula: 
Aula 2M
Relatore: 
Michael Toffolo
Afferenza: 
Eberhard-karls-Universitaet Tuebingen
Proponente: 
Gilberto Artioli

Processes and consequences of serpentinization

Data: 
Giovedì, 22 Gennaio, 2015 - 11:30
Relatore: 
Wolfgang Bach
Abstract: 

Serpentinization is a process that turns dry, dense, mechanical strong and weakly magnetic peridotite into a low-density, mechanically weak, and highly magnetic rock with >10 wt.% H2O. The chemical and physical changes of this transformation are so radical that the implications of serpentinization in all geotectonic settings where it occurs are extreme. Moreover, serpentinization fluids are rich in hydrogen which drives abiotic organic synthesis and supports unique ecosystems that are believed to be excellent analogues of hydrothermal sites where life may have originated.

I shall present an overview of what our current understanding of the mechanisms and rates of serpentinization is and discuss some of the ramifications of serpentinization in different geotectonic settings with a focus on submarine hydrothermal springs.

Afferenza: 
MARUM - Center for Marine Environmental Sciences, Università di Brema (Germania)
Proponente: 
Luca Toffolo

PATTERNS OF THE BIOTIC RECOVERY AFTER THE END-PERMIAN EXTINCTION: A CONODONT’S MULTI-SCALE PERSPECTIVE

Data: 
Giovedì, 5 Febbraio, 2015 - 16:45 - 17:30
Aula: 
Aula Arduino
Relatore: 
Nicolas Goudemand
Abstract: 

The end-Permian extinction was the most severe extinction in the history of animal life: it wiped out more than 90 percent of all marine species. Various scenarios have been proposed for the end-Permian event, all implying global environmental changes. The most recent advances actually suggest that this 250 million year old crisis „may serve as an important ancient analog for twenty-first century oceans“ (Payne and Clapham, 2012). Identifying the causes of the end-Permian mass extinction and controls on subsequent biotic recovery will shed light on the factors that shape biodiversity and ecosystem structure over geological time. They may also aid decision making regarding the current human-driven climate change and associated ecological impacts. Understanding the end-Permian event relies on answering the following, mutually related questions:

(1) What was the global sequence of abiotic/biotic events before, during and after the crisis?

(2) in particular, how did the environmental conditions in the oceans evolve?

(3) What were the structure and dynamics of trophic webs during this critical interval? and

(4) what can the differential responses of various groups of organisms (for instance nekton vs. benthos) tell us about the abiotic/biotic interactions at play, the causes of the crisis and the mechanisms during the recovery?

I will show how conodonts are critical to answering these questions.

 

 http://www.unipd.it/ilbo/content/patterns-biotic-recovery-after-end-permian-extionction-conodonts-multi-scale-perspective  

Afferenza: 
Department of Mechanical Engineering of the Swiss Federal Institute of Technology of Zurich, Switzerland (ETHZ)
Proponente: 
Manuel Rigo

COPE'S RULE AND THE BODY-SIZE EVOLUTION OF MARINE ANIMALS

Data: 
Giovedì, 5 Febbraio, 2015 - 16:00 - 16:45
Aula: 
Aula Arduino
Relatore: 
Jonathan Payne
Abstract: 

Cope’s Rule proposes that lineages evolve towards larger body size over time. To test this hypothesis across all marine animals, we compiled a dataset of body sizes for 17,208 genera of marine animals spanning the past 540 million years. Mean biovolume across genera has increased by a factor of 150 since the Cambrian, while minimum biovolume has decreased by less than a factor of ten and maximum biovolume has increased by more than a factor of 100,000. Neutral drift from a small initial value cannot explain this pattern. Instead, most of the size increase reflects differential diversification across classes, indicating that the pattern does not reflect a simple scaling-up of widespread and persistent selection for larger size within populations.

 http://www.unipd.it/ilbo/content/copes-rule-and-body-size-evolution-marine-animals  

Afferenza: 
Stanford Woods Institute for the Environment
Proponente: 
Manuel Rigo

PRESENTAZIONE II PREMIO DI LAUREA “AVUS 6 aprile 2009”

Data: 
Giovedì, 11 Dicembre, 2014 - 16:15
Aula: 
Aula Arduino
Abstract: 

CONSIGLIO NAZIONALE DEI GEOLOGI

FONDAZIONE CENTRO STUDI

ASSOCIAZIONE VITTIME UNIVERSITARIE SISMA

6 APRILE 2009

PRESENTAZIONE II PREMIO DI LAUREA “AVUS 6 aprile 2009”

Padova, Università degli Studi, Dipartimento di

Geoscienze- Aula Arduino, Via Gradenigo 6

giovedì 11 dicembre 2014 ore 16,15

Intervengono:

Armando Gennaro - Prorettore Università degli Studi di Padova;

Cristina Stefani - Direttore del Dipartimento di Geologia;

Vittorio d'Oriano – Vice Presidente Consiglio Nazionale dei Geologi – Presidente Fondazione “Centro Studi”

Michele Orifici – Coordinatore Commissione Protezione Civile Consiglio Nazionale dei Geologi;

Paolo Spagna – Presidente Ordine Geologi Veneto;

Sergio Bianchi - Presidente AVUS (Associazione Vittime Universitarie Sisma), padre di Nicola Bianchi;

Pia Antignani - studentessa di geologia presso UNIPD, sopravvissuta al crollo della scuola di San Giuliano di

Puglia il 31 ottobre 2002;

Moderatore: Umberto Braccili (giornalista RAI) - autore del libro “Macerie dentro e fuori” grazie al quale

sono stati raccolti i fondi destinati al premio di laurea.

Regolamento scaricabile da: http://www.cngeologi.it/2014/10/27/regolamenti-premi-avus-2014-2015/

Proponente: 
Paolo Fabbri

Key Points of the Geology of Morocco

Data: 
Lunedì, 15 Dicembre, 2014 - 14:30 - 15:30
Aula: 
Aula 2H
Relatore: 
Nasrrddine Youbi
Abstract: 

Morocco is one of the most fascinating lands in the world for studying Earth Sciences and Astrogeology. It is a friendly country, provided with a good network of roads. Morocco is the key point between one passive margin (the Atlantic Ocean), one ocean acting to closure (the Mediterranean Sea) and an old cratonic block (the West African Craton). This results in a rugged topography with a wide range of outcropping terranes spanning from Archean to Cenozoic in age, as well as diverse tectonic systems from sedimentary basins to metamorphic fold belts. Minerals and fossils from Morocco are curated in Museums the world over. Finally, it is worth emphasizing that natural resources extracted from the Moroccan subsoil are important for the national economy (phosphate, Gold, Ag, Pb, Zn, barite, fluorspar, etc.). At the moment, there is also active offshore exploration for oil and gas.

This talk is a general introduction to the geodynamic evolution of Morocco, focusing on some key points of its geology.

Afferenza: 
Department of Geology, Faculty of Sciences-Semlalia, Cadi Ayyad University, Prince Moulay Abdellah Boulevard, P.O. Box 2390, Marrakech, Morocco National Centre for Scientific and Technical Research, Angle avenues des FAR et Allal El Fassi, Madinat Al Irfane, P.O. Box 8027, Nations Unies, 10102 Rabat, Morocco
Proponente: 
Andrea Marzoli

Professione geologo - Il libero professionista

Data: 
Giovedì, 4 Dicembre, 2014 - 16:30
Aula: 
Aula Arduino
Relatore: 
Dr.ssa Eloisa Di Sipio
Afferenza: 
Consigliere dell'Ordine Regionale dei Geologi del Veneto
Proponente: 
Enrico Busnardo

La composizione dei fusi crostali naturali

Data: 
Giovedì, 22 Gennaio, 2015 - 16:30
Aula: 
Aula Arduino
Relatore: 
Antonio Acosta Vigil
Afferenza: 
Piscopia Fellow Dipartimento di Geoscienze
Proponente: 
Bernardo Cesare

Integration of terrain modeling and remote sensing: application in Geomorphology

Data: 
Giovedì, 15 Gennaio, 2015 - 16:30 - 17:30
Aula: 
Aula Arduino
Relatore: 
Andrea Ninfo
Afferenza: 
Assegno di Ricerca Dipartimento di Geoscienze
Proponente: 
Andrea Ninfo

Potenziale e rischio Geotermico nel contesto nazionale ed internazionale

Data: 
Giovedì, 18 Dicembre, 2014 - 16:30
Aula: 
Aula Arduino
Relatore: 
Adele Manzella
Afferenza: 
CNR-IGG PIsa
Proponente: 
Antonio Galgaro
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