Search Results - "Swindle, T D"

Support for the Lunar Cataclysm Hypothesis from Lunar Meteorite Impact Melt Ages by Cohen, B. A., Swindle, T. D., Kring, D. A.

“…Lunar meteorites represent a more random sampling of lunar material than the Apollo or Luna collections and, as such, lunar meteorite impact melt ages are the…”
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The Ar-Ar age and petrology of Miller Range 05029: Evidence for a large impact in the very early solar system by WEIRICH, J. R., WITTMANN, A., ISACHSEN, C. E., RUMBLE, D., SWINDLE, T. D., KRING, D. A.

“…– Miller Range (MIL) 05029 is a slowly cooled melt rock with metal/sulfide depletion and an Ar‐Ar age of 4517 ± 11 Ma. Oxygen isotopes and mineral composition…”
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40Ar-39Ar age of Northwest Africa 091: More evidence for a link between L chondrites and fossil meteorites by WEIRICH, J. R., SWINDLE, T. D., ISACHSEN, C. E.

“…— Most 40Ar‐39Ar ages of L chondrites record an event at approximately 500 Ma, indicating a large collisional impact at that time. However, there is a spread…”
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Alteration Assemblages in Martian Meteorites: Implications for Near-Surface Processes by Bridges, J C, Catling, D C, Saxton, J M, Swindle, T D, Lyon, I C, Grady, M M

“…The SNC (Shergotty-Nakhla-Chassigny) meteorites have recorded interactions between martian crustal fluids and the parent igneous rocks. The resultant secondary…”
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Apollo 17 regolith, 71501,262: A record of impact events and mare volcanism in lunar glasses by ZELLNER, N. E. B., DELANO, J. W., SWINDLE, T. D., BARRA, F., OLSEN, E., WHITTET, D. C. B.

“…— Thirteen glasses from Apollo 17 regolith 71501,262 have been chemically analyzed by electron microprobe and isotopically dated with the 40Ar/39Ar dating…”
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An integrated approach to understanding Apollo 16 impact glasses: Chemistry, isotopes, and shape by DELANO, J. W., ZELLNER, N. E. B., BARRA, F., OLSON, E., SWINDLE, T. D., TIBBETTS, N. J., WHITTET, D. C. B.

“…The major‐ and minor‐element abundances were determined by electron microprobe in 1039 glasses from regoliths and regolith breccias to define the compositional…”
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Search for evidence of source event grouping among ureilites by Beard, S. P., Swindle, T. D.

“…We use cosmic‐ray exposure (CRE) ages of ureilites, combined with magnesium numbers of olivine, and oxygen isotopes, to search for evidence of specific source…”
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The potential science and engineering value of samples delivered to Earth by Mars sample return by Beaty, D. W., Grady, M. M., McSween, H. Y., Sefton‐Nash, E., Carrier, B. L., Altieri, F., Amelin, Y., Ammannito, E., Anand, M., Benning, L. G., Bishop, J. L., Borg, L. E., Boucher, D., Brucato, J. R., Busemann, H., Campbell, K. A., Czaja, A. D., Debaille, V., Des Marais, D. J., Dixon, M., Ehlmann, B. L., Farmer, J. D., Fernandez‐Remolar, D. C., Filiberto, J., Fogarty, J., Glavin, D. P., Goreva, Y. S., Hallis, L. J., Harrington, A. D., Hausrath, E. M., Herd, C. D. K., Horgan, B., Humayun, M., Kleine, T., Kleinhenz, J., Mackelprang, R., Mangold, N., Mayhew, L. E., McCoy, J. T., McCubbin, F. M., McLennan, S. M., Moser, D. E., Moynier, F., Mustard, J. F., Niles, P. B., Ori, G. G., Raulin, F., Rettberg, P., Rucker, M. A., Schmitz, N., Schwenzer, S. P., Sephton, M. A., Shaheen, R., Sharp, Z. D., Shuster, D. L., Siljeström, S., Smith, C. L., Spry, J. A., Steele, A., Swindle, T. D., ten Kate, I. L., Tosca, N. J., Usui, T., Van Kranendonk, M. J., Wadhwa, M., Weiss, B. P., Werner, S. C., Westall, F., Wheeler, R. M., Zipfel, J., Zorzano, M. P.

“…Executive Summary Return of samples from the surface of Mars has been a goal of the international Mars science community for many years. Affirmation by NASA…”
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The potential science and engineering value of samples delivered to Earth by Mars sample return by Beaty, D. W., Grady, M. M., McSween, H. Y., Sefton‐Nash, E., Carrier, B. L., Altieri, F., Amelin, Y., Ammannito, E., Anand, M., Benning, L. G., Bishop, J. L., Borg, L. E., Boucher, D., Brucato, J. R., Busemann, H., Campbell, K. A., Czaja, A. D., Debaille, V., Des Marais, D. J., Dixon, M., Ehlmann, B. L., Farmer, J. D., Fernandez‐Remolar, D. C., Filiberto, J., Fogarty, J., Glavin, D. P., Goreva, Y. S., Hallis, L. J., Harrington, A. D., M. Hausrath, E., Herd, C. D. K., Horgan, B., Humanyun, M., Kleine, T., Kleinhenz, J., Mackelprang, R., Mangold, N., Mayhew, L. E., McCoy, J. T., McCubbin, F. M., McLennan, S. M., Moser, D. E., Moynier, F., Mustard, J. F., Niles, P. B., Ori, G. G., Raulin, F., Rettberg, P., Rucker, M. A., Schmitz, N., Schwenzer, S. P., Sephton, M. A., Shaheen, R., Sharp, Z. D., Schuster, D. L., Siljestrom, S., Smith, C. L., Spry, J. A., Steele, A., Swindle, T. D., ten Kate, I. L., Tosca, N. J., Usui, T., Van Kranendonk, M. J., Wadhwa, M., Weiss, B. P., Werner, S. C., Westall, F., Wheeler, R. M., Zipfel, J., Zorzano, M. P.

“…Executive summary provided in lieu of …”
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Production of noble gases near the surface of Europa and the prospects for in situ chronology by Swindle, T.D., Masarik, J., Kollár, D., Kim, K.J., Reedy, R.C.

“…The age of the surface of Europa is probably tens of Myr or less, but is poorly constrained. Two different geochronology schemes could potentially be applied…”
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The xenon isotopic composition of the primordial Martian atmosphere: Contributions from solar and fission components by Swindle, T. D., Jones, J. H.

“…Previous models of the evolution of the isotopic composition of Xe in the Martian atmosphere have little room for any Xe produced by fission of 244Pu, although…”
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Noble gases in orthopyroxenite ALH84001: A different kind of martian meteorite with an atmospheric signature by Swindle, T.D., Grier, J.A., Burkland, M.K.

“…Meteorite ALH84001, a recently identified martian orthopyroxenite, has xenon with higher ratios of 129Xe 132Xe (up to 2.15) than any previously identified…”
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Evidence from (40)Ar/(39)Ar ages of lunar impact glasses for an increase in the impact rate [not, vert, similar]800 Ma ago by Zellner, N.E.B., Delano, J W, Swindle, T D, Barra, F, Olsen, E, Whittet, D.C.B.

“…Geochemical and (40)Ar/(39)Ar data on nine impact glasses from the Apollo 14, 16, and 17 landing sites indicate at least seven distinct impact events with ages…”
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Incorporation of argon, krypton and xenon into clathrates on Mars by Swindle, Timothy D., Thomas, Caroline, Mousis, Olivier, Lunine, Jonathan I., Picaud, Sylvain

“…Calculations of the trapping of heavy noble gases within multiple guest clathrates under Mars-like conditions show that a substantial fraction of the martian…”
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VAPoR – Volatile Analysis by Pyrolysis of Regolith – an instrument for in situ detection of water, noble gases, and organics on the Moon by ten Kate, I.L., Cardiff, E.H., Dworkin, J.P., Feng, S.H., Holmes, V., Malespin, C., Stern, J.G., Swindle, T.D., Glavin, D.P.

“…We present the Volatile Analysis by Pyrolysis of Regolith (VAPoR) instrument design and demonstrate the validity of an in situ pyrolysis mass spectrometer for…”
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Liquid CO2 breakout and the formation of recent small gullies on Mars by Musselwhite, Donald S., Swindle, Timothy D., Lunine, Jonathan I.

“…We show that the action of a CO2 suspended flow could have produced the recent small gullies on Mars, and, hence, that liquid water is not required. The model…”
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Mars chronology: assessing techniques for quantifying surficial processes by Doran, Peter T., Clifford, Stephen M., Forman, Steven L., Nyquist, Larry, Papanastassiou, Dimitri A., Stewart, Brian W., Sturchio, Neil C., Swindle, Timothy D., Cerling, Thure, Kargel, Jeff, McDonald, Gene, Nishiizumi, Kunihiko, Poreda, Robert, Rice, James W., Tanaka, Ken

“…Currently, the absolute chronology of Martian rocks, deposits and events is based mainly on crater counting and remains highly imprecise with epoch boundary…”
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Noble gases in iddingsite from the Lafayette meteorite: Evidence for liquid water on Mars in the last few hundred million years by SWINDLE, T. D., TREIMAN, A. H., LINDSTROM, D. J., BURKLAND, M. K., COHEN, B. A., GRIER, J. A., LI, B., OLSON, E. K.

“…— We analyzed noble gases from 18 samples of weathering products (“iddingsite”) from the Lafayette meteorite. Potassium‐argon ages of 12 samples range from…”
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Fractionated martian atmosphere in the nakhlites? by Drake, M J, Swindle, T D, Owen, T, Musselwhite, D S

“…Considerable evidence points to a martian origin of the SNC meteorites. Noble gas isotopic compositions have been measured in most SNC meteorites. The…”
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Estimated solar wind-implanted helium-3 distribution on the Moon by Johnson, Jeffrey R., Swindle, Timothy D., Lucey, Paul G.

“…Among the solar wind‐implanted volatiles present in the lunar regolith, ³He is possibly the most valuable resource because of its potential as a fusion fuel…”
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