Showing 821 - 840 results of 910 for search '"meteorite"', query time: 0.13s Refine Results
  1. 821

    Did a Complex Carbon Cycle Operate in the Inner Solar System? by Joseph A. Nuth, Frank T. Ferguson, Hugh G. M. Hill, Natasha M. Johnson

    Published 2020-09-01
    “…Because 99% of silicates in meteorites were reprocessed at high temperatures in the inner regions of the Solar Nebula, we propose that similar levels of heating of carbonaceous materials in the oxygen-rich Solar Nebula would have converted nearly all carbon in dust and grain coatings to CO. …”
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    Article
  2. 822

    Evaluating Alternatives to Water as Solvents for Life: The Example of Sulfuric Acid by William Bains, Janusz Jurand Petkowski, Zhuchang Zhan, Sara Seager

    Published 2021-04-01
    “…However, analysis of meteoritic chemicals and possible abiotic synthetic paths suggests that postulated paths to the origin of life on Earth are unlikely to operate in CSA. …”
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    Article
  3. 823
  4. 824

    A Simple Elemental Sulfur Reduction Method for Isotopic Analysis and Pilot Experimental Tests of Symmetry‐Dependent Sulfur Isotope Effects in Planetary Processes by Mang Lin, Mark H. Thiemens

    Published 2020-07-01
    “…Our study offers a practical approach for measuring multiple isotopic compositions of S0 in laboratory and natural samples and creates new opportunities for deepening understanding of S‐MIF signatures in Archean rocks and Martian meteorites.…”
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    Article
  5. 825

    Preliminary Report of the Oversnow Traverse of the 14th Japanese Antarctic Research Expedition 1973-1974 by Renji NARUSE

    Published 1975-08-01
    “…The party carried out the following tasks : 1) Measurement of the ice sheet flow by the resurvey of the triangulation chain which was installed by the JARE-10, in 1969 along the parallel of 72° S; 2) Measurement of the ice thickness by a radio echo sounder; 3) Measurement of net accumulation with snow stakes; 4) Observation of katabatic wind and micrometeorological conditions by radio sondes and a sonic anemometer; 5) Surface meteorological observation, three times a day; 6) Measurement of drifting snow; 7) Continuous observation of geomagnetic field and its pulsations; 8) Observation of VLF emission; 9) Measurement of the inclination and declination of geomagnetism; 10) Measurement of gravity by the LaCoste gravity meter; 11) Measurement of elevation by a barometric altimeter; 12) Terrestrial survey of the Yamato Mountains; 13) Geological survey of the Yamato Mountains; 14) Observation of snowquake by a seismograph; 15) Measurement of 10 m snow temperature; 16) Geomorphological observation of the ice surface; 17) Geomorphological survey of ice mounds at 69°40'S, 44°12'E; 18) Traverse survey from Syowa Station to Mizuho Camp; 19) Collection of meteorites in the vicinity of the Yamato Mountains.…”
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    Article
  6. 826

    New development of compact magnetic separator for on-site material screening in various geological survey by So Jinnouchi, Chiaki Uyeda, Keiji Hisayoshi, Gen Takayama, Kentaro Terada

    Published 2024-03-01
    “…The improved separation resolution of the new separator has significantly increased the range of solid materials that can be magnetically separated, and the range of applications has been considerably expanded to include the matrix of primitive meteorites, surface soils of solid planets and satellites, volcanic ash and sedimentary rocks. …”
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    Article
  7. 827

    Evaluating Alternatives to Water as Solvents for Life: The Example of Sulfuric Acid by Bains, William, Petkowski, Janusz Jurand, Zhan, Zhuchang, Seager, Sara

    Published 2021
    “…However, analysis of meteoritic chemicals and possible abiotic synthetic paths suggests that postulated paths to the origin of life on Earth are unlikely to operate in CSA. …”
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    Article
  8. 828
  9. 829
  10. 830

    PENENTUAN TITIK BOR EKSPLORASI AIR TANAH BERDASARKAN DATA GEOLISTRIK DI DAERAH KARST by Arti, Cici, Putranto, Ilham Widi, Utami, Lisna Tri, Purwanta, Purwanta, Kurniawati, Rani, Pangestu, Wimbo Agung

    Published 2019
    “…Berdasarkan model3D resistivitas, akuifer terdapat di semua lintasan dengan kedalaman 10 – 15 meter.Sedangkan pada kedalaman sekitar 1 meter terdapat wanrna biru tetapi bukan merupakanakuifer melainkan air hujan atau air meteorit yang hanya bersifat sementara. Akuifer padalintasan 4, 5, 6 dan 7 memiliki pola menerus (conduit) sedangkan lintasan 1, 2 dan 3 berpolaspot-spot. …”
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    Conference or Workshop Item
  11. 831

    The compatibility of rhenium and osmium in natural olivine and their behaviour during mantle melting and basalt genesis by Burton, K, Gannoun, A, Birck, J, Allegre, C, Schiano, P, Clocchiatti, R, Alard, O

    Published 2002
    “…Rhenium and osmium (Re-Os) elemental abundances have been obtained for magmatic olivine from a range of host basalt compositions, for mantle olivine and coexisting phases (silicate and sulphide) from a spinel-peridotite, and olivine and Fe-Ni metal from Pallasite meteorites. These data indicate that Re and Os concentrations in olivine are low in both mantle and magmatic environments, and both elements preferentially partition into silicate melt, sulphide or Fe-Ni metal, relative to olivine. …”
    Journal article
  12. 832

    Search for nucleosynthetic and radiogenic tellurium isotope anomalies in carbonaceous chondrites by Fehr, M, Rehkaemper, M, Halliday, A, Schoenbaechler, M, Hattendorf, B, Guenther, D

    Published 2006
    “…Tellurium isotopes are produced by a broad range of nucleosynthetic pathways and they are therefore of particular interest given the isotopic anomalies previously identified for other elements in these meteorites. In addition, the data provide new constraints on the initial solar system abundance of the r-process nuclide 126Sn, which decays to 126Te with a half-life of 234,500 years. …”
    Journal article
  13. 833

    Disk transport rates from Ti isotopic signatures of refractory inclusions by Render, J, Bryson, J, Ebert, S, Brennecka, G

    Published 2022
    “…However, nucleosynthetic isotopic signatures of such refractory inclusions have so far primarily been analyzed in chondritic meteorites that formed within ~4 AU from the Sun. Here, we investigate Ti isotopic signatures of four refractory inclusions from the ungrouped carbonaceous chondrite WIS 91600 that was previously suggested to have formed beyond ~10 AU from the Sun. …”
    Journal article
  14. 834

    Volatilities of trace elements in silicate melts by Norris, C

    Published 2016
    “…Comparing depletion of the Silicate Earth relative to CI meteorites shows a remarkably consistent trend with the measured volatility factors, suggesting that evaporative volatile loss occurred during planetary formation, most likely from planetesimals.…”
    Thesis
  15. 835

    Effects of varying environmental conditions on emissivity spectra of bulk lunar soils: Application to Diviner thermal infrared observations of the Moon by Donaldson Hanna, K, Greenhagen, B, Patterson, W, Pieters, C, Mustard, J, Bowles, N, Paige, D, Glotch, T, Thompson, C

    Published 2016
    “…<p>Currently, few thermal infrared measurements exist of fine particulate ( &lt; 63 μm) analogue samples (e.g. minerals, mineral mixtures, rocks, meteorites, and lunar soils) measured under simulated lunar condi- tions. …”
    Journal article
  16. 836

    The influence of cosmic-ray production on extinct nuclide systems by Leya, I, Wieler, R, Halliday, A

    Published 2003
    “…Variations in the atomic abundances of 53Cr, 92Zr, 98Ru, 99Ru, and 182W in meteorites and lunar samples relative to terrestrial values may imply the early decay of radioactive 53Mn, 92Nb, 98Tc, 99Tc and 182Hf, respectively. …”
    Journal article
  17. 837
  18. 838
  19. 839

    Protracted Timescales for Nebular Processing of First-formed Solids in the Solar System by Prajkta Mane, Maitrayee Bose, Meenakshi Wadhwa, Céline Defouilloy

    Published 2023-01-01
    “…The calcium–aluminum-rich inclusions (CAIs) from chondritic meteorites are the first solids formed in the solar system. …”
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    Article
  20. 840

    Mars encounters cause fresh surfaces on some near-Earth asteroids by Lockhart, Matthew, DeMeo, Francesca E, Binzel, Richard P

    Published 2016
    “…All airless bodies are subject to the space environment, and spectral differences between asteroids and meteorites suggest many asteroids become weathered on very short (<1 Myr) timescales. …”
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    Article