Results 41 to 50 of about 225,756 (235)

Zircon ages in granulite facies rocks: decoupling from geochemistry above 850 °C? [PDF]

, 2018
Granulite facies rocks frequently show a large spread in their zircon ages, the interpretation of which raises questions: Has the isotopic system been disturbed? By what process(es) and conditions did the alteration occur?
A Boriani, A Boriani, A Henk, A Langone, A Mulch, A Mulch, A Möller, A Zanetti, A Zingg, A Zingg, A-M Seydoux-Guillaume, AE Hofmann, B Bingen, B Schnetger, Barbara E. Kunz, BE Kunz, BE Kunz, C Annen, C Paton, C Paton, C Redler, C Redler, C Yakymchuk, CR McFarlane, CR McFarlane, D Regis, D Rubatto, D Rubatto, D Rubatto, D Rubatto, D Rubatto, Daniele Regis, DE Kelsey, DE Kelsey, DJ Cherniak, DJ Cherniak, DM Fountain, DM Fountain, E Rutter, EB Watson, EB Watson, EM Peterman, F Corfu, F Tomaschek, FJ Korhonen, G Bigi, G Fraser, G Peressini, G Rivalenti, G Rivalenti, G Vavra, G Vavra, GL Luvizotto, H Berckhemer, H Degeling, H Voshage, IS Williams, IS Williams, J Hermann, J Pape, J Sláma, JA Baldwin, JA Petrus, JE Quick, JE Quick, JF Diener, JW Valley, K Mezger, KR Mehnert, L Nasdala, L Nasdala, L Schiøtte, M Bertolani, M Bertolani, M Guillong, M Kohn, M Tichomirowa, MA Kusiak, MA Kusiak, Martin Engi, MJ Whitehouse, MP Roberts, MR Handy, MR Handy, NE Timms, NE Timms, NJ Pearce, NM Kelly, P Monjoie, P Vonlanthen, PW Hoskin, PW Hoskin, PW Hoskin, R Schuster, RC Ewing, RJ Taylor, RM Flowers, RT Pidgeon, S Barboza, S Barboza, S Bodorkos, S Capedri, S Piazolo, S Sinigoi, S Sinigoi, S Sinigoi, SE Jackson, SH Vorhies, SL Harley, SM Reddy, SM Schmid, SM Schmid, T Geisler, T Geisler, TA Ewing, U Schaltegger, U Schaltegger, U Schaltegger, U Schaltegger, US Klötzli, WF McDonough   +120 more
core   +1 more source

MICROINCLUSIONS OF PGM MINERALS IN ANCIENT GOLD PRODUCTS: OCCURRENCE, COMPOSITION, ALTERATION [PDF]

Минералогия, 2015
The PGM microinclusions in ancient gold products from the Urals, Siberia, Azov region and Turkmenistan are compared with similar inclusions from the Middle East artifacts. Microinclusions were found in the archaeological sites, which are located close to
V.V. Zaykov, P.K. Dashkovsky, E.V. Zaykova, V.A. Kotlyarov, A.M. Yuminov, I.A. Blinov   +5 more
doaj  

The composition of the fluid phase in inclusions in synthetic HPHT diamonds grown in system Fe–Ni–Ti–C

Scientific Reports, 2022
Diamonds grown by high pressure high temperature process (HPHT) are usually characterized by yellow color and high contents of nitrogen. Introduction of Ti decreases nitrogen content in diamond.
Valeri Sonin, Anatoly Tomilenko, Egor Zhimulev, Taras Bul’bak, Aleksei Chepurov, Yuri Babich, Alla Logvinova, Tat’yana Timina, Anatoly Chepurov   +8 more
doaj   +1 more source

COMPARATIVE ANALYSIS OF COMPOSITION OF GOLD FOIL FROM ARCHAEOLOGICAL MONUMENTS OF ALTAI, URALS, AND DON REGION: ICP-MS AND XRF DATA [PDF]

Минералогия, 2016
The composition of gold foil from archaeological monuments of Altai, Urals and Don region was studied with ICP-MS and XRF. The foil from the Altai and Uralian monuments is characterized by the higher contents of Pt (54–315 ppm) and Pd (3–13 ppm) in ...
V.V. Zaykov, K.A.Filippova, V.N. Udachin, E.V. Zaykova, M.A. Rassomakhin, Yu.D.Kraynev   +5 more
doaj  

Northwest Africa 5790. Top Sequence of the Nakhlite Pile [PDF]

, 2010
NWA 5790 is a recently discovered nakhlite. Its mineralogy, petrology and geochemistry suggest that it is the topmost sequence of the nakhlite lava ...
Badia, D., Barrat, J. A., Bollinger, C., Boudouma, O., Franchi, I., Greenwood, R. C., Jambon, A, Sautter, V.   +7 more
core  

Stellar dust production and composition in the Magellanic Clouds [PDF]

, 2012
The dust reservoir in the interstellar medium of a galaxy is constantly being replenished by dust formed in the stellar winds of evolved stars. Due to their vicinity, nearby irregular dwarf galaxies the Magellanic Clouds provide an opportunity to obtain ...
Kemper, F.
core   +2 more sources

Mineralogical Characterization of Baptistina Asteroid Family: Implications for K/T Impactor Source

, 2011
Bottke et al. (2007) linked the catastrophic formation of Baptistina Asteroid Family (BAF) to the K/T impact event. This linkage was based on dynamical and compositional evidence, which suggested the impactor had a composition similar to CM2 carbonaceous
Candal, Alvaro Alvarez, Carvano, Jorge M., Cloutis, Edward A., Diniz, Thais Mothé, Gaffey, Michael J., Kelley, Michael S., Lazzaro, Daniela, Michtchenko, Tatiana A., Moskovitz, Nicholas A., Reddy, Vishnu, Ryan, Erin L.   +10 more
core   +1 more source

MINERAL COMPOSITION OF ORE CLASTS OF THE NOVY SHEMUR MASSIVE SULFIDE DEPOSIT, NORTH URALS [PDF]

Минералогия, 2018
The features of mineral composition are considered for clastic ores composing the main part of rich Cu-Zn ores of the Novy Shemur massive sulfide deposit, North Urals.
N.P. Safina, N.R. Ayupova, A.S. Tseluyko, K.A. Filippova   +3 more
doaj  

Oxygen isotopic and petrological constraints on the origin and relationship of IIE iron meteorites and H chondrites [PDF]

, 2011
New oxygen isotopic measurements of IIEs and H chondrites are indistinguishable — strengthening a possible common origin for these groups.
Anand, M., Franchi, I. A., Greenwood, R. C., Mcdermott, K., Scott, E. R. D.   +4 more
core  

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts [PDF]

, 2010
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
Cvetkovic, V., Downes, Hilary, Hock, V., Lazarov, M., Prelevic, D.   +4 more
core   +1 more source