A5043670101- Geological and Geochemical Analysis
- Astro and Planetary Science
- High-pressure geophysics and materials
- Planetary Science and Exploration
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Mineralogy and Gemology Studies
- Geochemistry and Geologic Mapping
- Geomagnetism and Paleomagnetism Studies
- Isotope Analysis in Ecology
- Paleontology and Stratigraphy of Fossils
- Geological Studies and Exploration
- Geological and Geophysical Studies Worldwide
- Ancient Mediterranean Archaeology and History
- Crystal Structures and Properties
- Nuclear Physics and Applications
- Hydrocarbon exploration and reservoir analysis
- Pleistocene-Era Hominins and Archaeology
- Diamond and Carbon-based Materials Research
- Geological and Geophysical Studies
- Diverse academic and cultural studies
- Extraction and Separation Processes
- Historical and Environmental Studies
- Hops Chemistry and Applications
- X-ray Diffraction in Crystallography
Institute of Geosciences and Earth Resources
2011-2023
National Research Council
2020-2023
Fondazione IRCCS Istituto Neurologico Carlo Besta
2022-2023
Consorzio Roma Ricerche
2017-2020
University of Göttingen
2014
University of Padua
2014
Institute of Ionized Gas
2013
Australian National University
2005
Institute for the Dynamics of Environmental Processes
1996-2001
Significance The origin of diamonds in ureilites is still a debated issue among the scientific community, with significant implications for sizes early Solar System bodies. We investigated three diamond-bearing by multimethodological approach using scanning electron microscopy, micro X-ray diffraction, transmission and micro-Raman spectroscopy, aim determining diamonds. Our results show that formation both microdiamonds nanodiamonds can be explained impact shock events on small planetesimal...
Abstract Almahata Sitta (AhS), an anomalous polymict ureilite, is the first meteorite observed to originate from a spectrally classified asteroid (2008 TC 3 ). However, correlating properties of with those not straightforward because AhS stones are diverse types. Of studied prior this work, 70–80% ureilites (achondrites) and 20–30% various types chondrites. Asteroid 2008 was heterogeneous breccia that disintegrated in atmosphere, its clasts landing on Earth as individual most mass lost. We...
Devonian–Carboniferous granites are widespread in Tasmania. In eastern Tasmania, Devonian intrude Ordovician–Early quartz-rich turbidites of the Mathinna Supergroup. The earliest (∼400 Ma) I-type granodiorites may be arc-related. Following Tabberabberan Orogeny (∼389 Ma), more felsic and, finally, strongly fractionated I- and S-type were emplaced until ∼373 Ma. contrast, western Tasmania a diverse terrane predominantly marine shelf successions, with depositional ages as old Late...
Research Article| October 01, 2005 Grenville-age magmatism at the South Tasman Rise (Australia): A new piercing point for reconstruction of Rodinia A.M. Fioretti; Fioretti 1Consiglio Nazionale delle Ricerche (CNR), Istituto di Geoscienze e Georisorse, Corso Garibaldi 37, I-35137 Padova, Italy, and Visiting Fellows School Earth Sciences, Australian National University, Canberra, ACT 0200, Australia Search other works by this author on: GSW Google Scholar L.P. Black; Black 2Minerals Division,...
The largest field of Alpine Oligocene pegmatite dikes is in the Central Alps within Southern Steep Belt (SSB) nappes; it extends for about 100 km an E-W direction and 15 a N-S north Periadriatic Fault, from Bergell pluton (to east) to Ossola valley west).The geographically overlaps (1) highest temperature domain Lepontine Barrovian metamorphic dome (2) zone migmatization.We have studied pegmatites two areas: Codera area on western border Bodengo between Mera Mesolcina valleys.Most show...
Abstract Recently it has been shown that the relatively low closure temperature ( T c ) of 500 (100)°C calculated for augite from Miller Range nakhlite MIL 03346,13) using available geothermometers would correspond to a slow cooling rate inconsistent with petrologic evidence an origin fast‐cooled lava flow. Moreover, previous annealing experiments combined HR ‐ SC XRD on crystal 03346 clearly showed at 600 °C, Fe 2+ ‐Mg degree order remained unchanged, thus suggesting actual is close this...
Abstract Asteroid 2008 TC 3 impacted the Earth's atmosphere with a known shape and orientation. Over 600 meteorites were recovered at recorded locations, including of nonureilite type. From where in asteroid did these stones originate? Here, we reconstruct meteor lightcurve study breakup dynamics 3‐D hydrodynamic modeling. Two fragmentation regimes are found that explain strewn field. As long as created wake vacuum, fragments tended to move into shadow, they mixed small relative velocities...
Abstract In northern Victoria Land (NVL), Antarctica, the palaeopacific margin of Gondwana is made up inboard Wilson (WT) and two outboard Bowers (BT) Robertson Bay (RBT) terranes. The occurrence a Cambro‐Ordovician magmatic arc in WT argues for southwestward subduction leading to final configuration this during Ross–Delamerian Orogeny. A U‐Pb SHRIMP crystallization age (511.7 ± 2.9 Ma) obtained on Surgeon Island Granite (SIG), located at eastern end RBT, indicates that SIG also belongs Ross...
The volatile concentrations of the martian mantle and magmas remain important questions due to their role in petrogenesis planetary habitability. sulfur chlorine concentrations, spatial distribution, clinopyroxenes from nakhlites MIL 03346, Nakhla, NWA 998 were measured provide insight into these volatiles parental melts source regions nakhlites, constrain evolution nakhlite melts. Sulfur four clinopyroxene crystals five crystal cores rims by synchrotron X-ray fluorescence using beamline I18...
The thermal history of carbon phases, including graphite and diamond, in the ureilite meteorites has implications for formation, igneous evolution, impact disruption their parent body early Solar System. Geothermometry data were obtained by micro-Raman spectroscopy on Almahata Sitta (AhS) ureilites AhS 72, 209b A135A from University Khartoum collection. In these samples, shows G-band peak centers between 1578 1585 cm−1 full width at half maximum values correspond to a crystallization...
Abstract The relevance of education and outreach (E&O) activities about the Antarctic Treaty has been recognized at Consultative Meetings (ATCM) Committee for Environmental Protection (CEP). This study examines key topics target audiences detailed in papers submitted to ATCM on E&O. Since entered into force 1961, a total 216 E&O have produced. number increased substantially since mid-1990s. ‘Science’ (76.9%) ‘Wildlife/Biodiversity/Environment’ (75.5%) were most addressed these...
Abstract Terrestrial analogues are often investigated to get insights into the geological processes occurring on other planetary bodies. Due its thickness and petrological similarities, pyroxenitic layer of 120m-thick magmatic pile Theo’s Flow (Archean Abitibi greenstone belt Ontario, Canada), has always been regarded as terrestrial analogue for Martian nakhlites. However, origin cooling history and, a consequence those nakhlites, have matter vigorous debate. Did this lava flow originate...
Research Article| December 01, 2016 The role of Fe content on the Fe-Mg exchange reaction in augite Mara Murri; Murri 1Dipartimento di Scienze della Terra e dell'Ambiente, Università degli Studi Pavia, Italy Search for other works by this author on: GSW Google Scholar Lorenzo Scandolo; Scandolo Anna Maria Fioretti; Fioretti 2Istituto Geoscienze Georisorse CNR, Padova, Fabrizio Nestola; Nestola 3Dipartimento Geoscienze, Chiara Domeneghetti; Domeneghetti Matteo Alvaro * *E-mail:...