Search Results - "Paolo Nimis"

Internally consistent geothermometers for garnet peridotites and pyroxenites by Nimis, Paolo, Grütter, Herman

“…Mutual relationships among temperatures estimated with the most widely used geothermometers for garnet peridotites and pyroxenites demonstrate that the methods…”
Get full text

First evidence of hydrous silicic fluid films around solid inclusions in gem-quality diamonds by Nimis, Paolo, Alvaro, Matteo, Nestola, Fabrizio, Angel, Ross J., Marquardt, Katharina, Rustioni, Greta, Harris, Jeff W., Marone, Federica

“…Diamonds form from fluids or melts circulating at depth in the Earth's mantle. Analysis of these fluids is possible if they remain entrapped in the diamond…”
Get full text

Diamond-inclusion system recording old deep lithosphere conditions at Udachnaya (Siberia) by Nestola, Fabrizio, Zaffiro, Gabriele, Mazzucchelli, Mattia L., Nimis, Paolo, Andreozzi, Giovanni B., Periotto, Benedetta, Princivalle, Francesco, Lenaz, Davide, Secco, Luciano, Pasqualetto, Leonardo, Logvinova, Alla M., Sobolev, Nikolay V., Lorenzetti, Alessandra, Harris, Jeffrey W.

“…Diamonds and their inclusions are unique fragments of deep Earth, which provide rare samples from inaccessible portions of our planet. Inclusion-free diamonds…”
Get full text

Fe3+ partitioning systematics between orthopyroxene and garnet in mantle peridotite xenoliths and implications for thermobarometry of oxidized and reduced mantle rocks by Nimis, Paolo, Goncharov, Alexey, Ionov, Dmitri A., McCammon, Catherine

“…We have investigated the partitioning of Fe 3+ between orthopyroxene (Opx) and garnet (Grt) in well-equilibrated mantle xenoliths using Mössbauer spectroscopy…”
Get full text

Single clinopyroxene thermobarometry for garnet peridotites. Part I. Calibration and testing of a Cr-in-Cpx barometer and an enstatite-in-Cpx thermometer by Nimis, Paolo, Taylor, Wayne R

“…Experimental clinopyroxenes synthesized at 850-1500 degC and 0-60 kbar in the CMS and CMAS-Cr systems and in more complex lherzolitic systems have been used to…”
Get full text

First crystal-structure determination of olivine in diamond: Composition and implications for provenance in the Earth's mantle by Nestola, Fabrizio, Nimis, Paolo, Ziberna, Luca, Longo, Micaela, Marzoli, Andrea, Harris, Jeff W., Manghnani, Murli H., Fedortchouk, Yana

“…We report for the first time a complete X-ray diffraction in-situ crystal-structure refinement of a single crystal of olivine still trapped in a diamond…”
Get full text

Sulfide Breccias from the Semenov-3 Hydrothermal Field, Mid-Atlantic Ridge: Authigenic Mineral Formation and Trace Element Pattern by Irina Melekestseva, Valery V. Maslennikov, Nataliya P. Safina, Paolo Nimis, Svetlana Maslennikova, Victor Beltenev, Irina Rozhdestvenskaya, Leonid Danyushevsky, Ross Large, Dmitry Artemyev, Vasily Kotlyarov, Luca Toffolo

“…The aim of this paper is the investigation of the role of diagenesis in the transformation of clastic sulfide sediments such as sulfide breccias from the…”
Get full text

Non-Destructive In Situ Study of Plastic Deformations in Diamonds: X-ray Diffraction Topography and µFTIR Mapping of Two Super Deep Diamond Crystals from São Luiz (Juina, Brazil) by Agrosì, Giovanna, Tempesta, Gioacchino, Della Ventura, Giancarlo, Cestelli Guidi, Mariangela, Hutchison, Mark, Nimis, Paolo, Nestola, Fabrizio

“…Diamonds from Juina, Brazil, are well-known examples of superdeep diamond crystals formed under sublithospheric conditions and evidence would indicate their…”
Get full text

Melt migration in the upper mantle along the Romanche Fracture Zone (Equatorial Atlantic) by Tartarotti, Paola, Susini, Sara, Nimis, Paolo, Ottolini, Luisa

“…Textural and petrological data of mantle peridotites sampled in the central and western parts of the Romanche Fracture Zone (Equatorial Atlantic) during the…”
Get full text

A revision of the Ni-in-garnet geothermometer with special regard to its pressure dependence by Nimis, Paolo, Zanetti, Alberto, Franz, Leander

“…We have explored the effect of temperature (T) and pressure (P) on Ni partitioning between garnet and olivine in well-equilibrated mantle xenoliths from…”
Get full text

Garnet and spinel in fertile and depleted mantle: insights from thermodynamic modelling by Ziberna, Luca, Klemme, Stephan, Nimis, Paolo

“…We performed thermodynamic calculations based on model and natural peridotitic compositions at pressure and temperature conditions relevant to the Earth’s…”
Get full text

Diamond's depth distribution systematics by Nimis, Paolo, Preston, Robin, Perritt, Samantha H., Chinn, Ingrid L.

“…The thermobarometric analysis of inclusions in lithospheric diamonds has shown that these diamonds may originate from a wide range of depths, with a global…”
Get full text

Seafloor massive sulfides from mid-ocean ridges: Exploring the causes of their geochemical variability with multivariate analysis by Toffolo, Luca, Nimis, Paolo, Tret'yakov, Gennady A., Melekestseva, Irina Y., Beltenev, Victor E.

“…The neovolcanic zones of mid-ocean ridges are host to seawater-derived hydrothermal systems forming seafloor massive sulfide (SMS) deposits. These deposits…”
Get full text

Stabilization and evolution of the Brazilian subcontinental lithospheric mantle: Insights from garnet xenocrysts and peridotite xenoliths of Três Ranchos kimberlite (APIP, Brazil) by Guarino, Vincenza, Bonazzi, Mattia, Nimis, Paolo, Guitarrari Azzone, Rogério, Cariddi, Bruna, Zanetti, Alberto

“…[Display omitted] •Definition of the thermal structure of the Brazilian SCLM using geothermobarometers.•Ultra-alkaline silicate metasomatism involved in deep…”
Get full text

Does subduction polarity control metallogeny? The Mediterranean case by Nimis, Paolo, Omenetto, Paolo

“…The distribution of ore‐deposit types in different sectors of the circum‐Mediterranean realm that have been affected by subduction processes since the…”
Get full text

Dual origin of ferropericlase inclusions within super-deep diamonds by Lorenzon, Sofia, Wenz, Michelle, Nimis, Paolo, Jacobsen, Steven D., Pasqualetto, Leonardo, Pamato, Martha G., Novella, Davide, Zhang, Dongzhou, Anzolini, Chiara, Regier, Margo, Stachel, Thomas, Pearson, D. Graham, Harris, Jeffrey W., Nestola, Fabrizio

“…Ferropericlase [(Mg,Fe)O] is one of the major constituents of Earth's lower mantle and the most abundant mineral inclusion in sub-lithospheric diamonds…”
Get full text

A hidden Oligocene pluton linked to the Periadriatic Fault System beneath the Permian Bressanone pluton, eastern Southern Alps by Visonà, Dario, Nimis, Paolo, Fioretti, Anna M., Massironi, Matteo, Villa, Igor M.

“…The Bressanone (Brixen) pluton, cropping out at the culmination of the Southalpine indenter between the North Giudicarie and the Pustertal-Gailtal faults, is…”
Get full text

Clinopyroxene geobarometry of magmatic rocks. Part 2. Structural geobarometers for basic to acid, tholeiitic and mildly alkaline magmatic systems by Nimis, Paolo

“…The crystal structures of 212 experimentally synthesized, igneous clinopyroxenes were modeled from electronprobe chemical data. The coexisting melts span a…”
Get full text

Metal flow in the late Bronze Age across the Friuli-Venezia Giulia plain (Italy): new insights on Cervignano and Muscoli hoards by chemical and isotopic investigations by Canovaro, Caterina, Angelini, Ivana, Artioli, Gilberto, Nimis, Paolo, Borgna, Elisabetta

“…Numerous metal hoards found in the Friuli-Venezia Giulia plain, Northeastern Italy, are archaeologically dated to the Recent and Final Bronze Age. Here, the…”
Get full text

Shock degree and graphite geothermometry in ureilites NWA 6871 and NWA 3140 by Christ, Oliver, Barbaro, Anna, Brenker, Frank E., Nimis, Paolo, Novella, Davide, Domeneghetti, M. Chiara, Nestola, Fabrizio

“…Carbon aggregates from two differently shocked ureilites were analyzed to gain insight into the shock transformation of graphite to diamond in ureilites, which…”
Get full text