- Sky Beard (PTYS)Tony Nottke (Chemistry)
- Kristin Block, 2011 (PTYS)Michael Burkland, 1998 (Physics)Barbara Cohen, 2000 (PTYS)John Weirich, 2011 (PTYS)
- Don MusselwhiteJohn Weirich
Timothy SwindleDirector, Department Head
Ph.D., 1986, Washington University
Years with LPL: 1986 to present
RESEARCH INTERESTSDr. Swindle uses measurements of the noble gases in extraterrestrial materials (lunar samples and meteorites) to study the evolution of the solar system.
His research projects include using 40Ar-39Ar dating to determine the timing of impact events on the Moon and on asteroids, and studying Martian meteorites to understand the history of the Martian atmosphere and its interaction with surface materials. Past research projects have included using I-129, and its decay product Xe-129, to study the timing of the formation of the earliest solids in the solar nebula, and working on developing techniques to use instruments on spacecraft to measure ages of planetary surfaces in situ.
- Lunar Greenhouse Prototype for Bioregenerative Life Support Systems: NASA Ralph Steckler Space Grant Colonization Research and Technology Development Opportunity Phase II
- Arizona Space Grant Consortium: NASA Space Grant
- A noble gas based history of major impacts in the inner Solar System: NASA Cosmochemistry
- Setting the stage for life: From interstellar clouds to early Earth and Mars: NASA Astrobiology Institute
- Impact processes in the origin and evolution of the Moon: New sample-driven perspectives: NASA Lunar Institute
CURRENT SPACECRAFT INVOLVEMENTOSIRIS-Rex, collaborator
ADS PUBLICATIONS SEARCHNASA ADS Author search: T. D. Swindle
SELECTED PUBLICATIONSFriedrich, J. M., et al. Ancient porosity preserved in ordinary chondrites: Examining shock and compaction on young asteroids 2014M&PS..tmp...67F
Swindle, T. D., Kring, D. A., Weirich, J. R. 40Ar/39Ar ages of impacts involving ordinary chondrite meteorites 2014GSLSP.378..333S
Mousis, O., et al. Volatile Trapping in Martian Clathrates 2013SSRv..174..213M
Weirich, J. R., et al. Source of potassium in shocked ordinary chondrites 2012GeCoA..98..125W
Swindle, T. D., et al. 40Ar-39Ar Ages of Centimeter-Sized Impact Melt Clasts from Ancient Regolith Breccia 60016 2012M&PSA..75.5048S
Weirich, J. R., Swindle, T. D., Isachsen, C. E. 40Ar-39Ar age of Northwest Africa 091: More evidence for a link between L chondrites and fossil meteorites 2012M&PS...47.1324W
Smith, A., et al. Lunar Net - A proposal in response to an ESA M3 call in 2010 for a medium sized mission 2012ExA....33..587S
Weirich, J. R., et al. Variability of diffusion of argon in albite, pyroxene, and olivine in shocked and unshocked samples 2012GeCoA..77..546W
Wittmann, A., et al. H/L chondrite LaPaz Icefield 031047 - A feather of Icarus? 2011GeCoA..75.6140W
Rubin, A. E., Swindle, T. D. Flattened chondrules in the LAP 04581 LL5 chondrite: Evidence for an oblique impact into LL3 material and subsequent collisional heating 2011M&PS...46..587R
Weirich, J. R., et al. The Ar-Ar age and petrology of Miller Range 05029: Evidence for a large impact in the very early solar system 2010M&PS...45.1868W
Wittmann, A., et al. Impact cratering on the H chondrite parent asteroid 2010JGRE..11507009W
Ten Kate, I. L., et al. VAPoR - Volatile Analysis by Pyrolysis of Regolith - an instrument for in situ detection of water, noble gases, and organics on the Moon 2010P&SS...58.1007T
Swindle, T. D., et al. Incorporation of argon, krypton and xenon into clathrates on Mars 2009Icar..203...66S
Zellner, N. E. B., et al. Evidence from 40Ar/39Ar ages of lunar impact glasses for an increase in the impact rate ˜800 Ma ago 2009GeCoA..73.4590Z
Zellner, N. E. B., et al. Apollo 17 regolith, 71501,262: A record of impact events and mare volcanism in lunar glasses 2009M&PS...44..839Z
Swindle, T. D., et al. 40Ar-39Ar ages of H-chondrite impact melt breccias 2009M&PS...44..747S
Delano, J. W., et al. An integrated approach to understanding Apollo 16 impact glasses: Chemistry, isotopes, and shape 2007M&PS...42..993D
Barra, F., et al. 40Ar/39Ar dating of Apollo 12 regolith: Implications for the age of Copernicus and the source of nonmare materials 2006GeCoA..70.6016B
Cohen, B. A., Swindle, T. D., Kring, D. A. Geochemistry and 40Ar-39Ar geochronology of impact-melt clasts in feldspathic lunar meteorites: Implications for lunar bombardment history 2005M&PS...40..755C
Swindle, T. D., et al. Production of noble gases near the surface of Europa and the prospects for in situ chronology 2005Icar..174..205S
Swindle, T. D., Campins, H. Do comets have chondrules and CAIs? Evidence from the Leonid meteors 2004M&PS...39.1733S
Doran, P. T., et al. Mars chronology: assessing techniques for quantifying surficial processes 2004ESRv...67..313D
Grier, J. A., et al. Analyses of the chondritic meteorite Orvinio (H6): Insight into the origins and evolution of shocked H chondrite material 2004M&PS...39.1475G
Swindle, T. D., Olson, E. K. 40Ar-39Ar studies of whole rock nakhlites: Evidence for the timing of formation and aqueous alteration on Mars 2004M&PS...39..755S
Beaty, D. W., et al. Planning for a Mars in situ sample preparation and distribution (SPAD) system 2004P&SS...52...55B
Campins, H, Swindle, T. D., & Kring, D. A., 2003, In Cellular Origin and Life in Extreme Habitats, Vol. 6, Origins: Genesis, Evolution and Diversity of Life (J. Seckbach, ed., Kluwer)Evaluating comets as a source of Earth's water. Kring, D. A., et al. Composition of the first bulk melt sample from a volcanic region of Mars: Queen Alexandra Range 94201 2003M&PS...38.1833K
Daubar, I. J., et al. Northwest Africa 482: A crystalline impact-melt breccia from the lunar highlands 2002M&PS...37.1797D
Lorenz, R. D., et al. Radiocarbon on Titan 2002M&PS...37..867L
Johnson, J. R., et al. Lunar Prospector epithermal neutrons from impact craters and landing sites: Implications for surface maturity and hydrogen distribution 2002JGRE..107.5008J
Swindle, T. D., 2002, Reviews in Mineralogy and Geochemistry, Martian noble gases.
Swindle, T. D., 2002, Reviews in Mineralogy and Geochemistry, Noble gases in the moon and meteorites: radiogenic comopnents and early volatile chronologies.
Musselwhite, D. S., Swindle, T. D. Is Release of Martian Atmosphere from Polar Clathrate the Cause of the Nakhlite and ALH84001 Ar/Kr/Xe Ratios? 2001Icar..154..207M
Bridges, J. C., et al. Alteration Assemblages in Martian Meteorites: Implications for Near-Surface Processes 2001SSRv...96..365B
Musselwhite, D. S., Swindle, T. D., Lunine, J. I. Liquid CO2 breakout and the formation of recent small gullies on Mars 2001GeoRL..28.1283M
Cohen, B. A., Swindle, T. D., Kring, D. A. Support for the Lunar Cataclysm Hypothesis from Lunar Meteorite Impact Melt Ages 2000Sci...290.1754C
Swindle, T. D. The comeback continues for the iodine-xenon dating system 2000M&PS...35R.443S
Swindle, T. D., et al. Noble gases in iddingsite from the Lafayette meteorite: Evidence for liquid water on Mars in the last few hundred million years 2000M&PS...35..107S
Grier, J. A., et al. Argon-40/argon-39 analyses of samples from the Gardnos impact structure, Norway 1999M&PS...34..803G
Swindle, T. D. Lunar exploration: Polar endeavours 1999Natur.399..738S
Johnson, J. R., Swindle, T. D., Lucey, P. G. Estimated solar wind-implanted helium-3 distribution on the moon 1999GeoRL..26..385J
Krot, A. N., et al. Mineralogy, petrography and bulk chemical, iodine-xenon, and oxygen-isotopic compositions of dark inclusions in the reduced CV3 chondrite Efremovka 1999M&PS...34...67K
Campins, H., Swindle, T. D. Expected characteristics of cometary meteorites 1998M&PS...33.1201C
Swindle, T. D. Lunar exploration: Water amongst the rock 1998Natur.395..549S
Swindle, T. D. Implications of I-Xe studies for the timing and location of secondary alteration 1998M&PS...33.1147S
Kring, D. A., et al. Formation and relative ages of maskelynite and carbonate in ALH84001 1998GeCoA..62.2155K
Goswami, J. N., et al. In situ determination of iodine content and I-Xe systematics in silicates and troilite phases in chondrules from the LL3 chondrite Semarkona 1998M&PS...33..527G
Swindle, T. D., et al. Noble gases, bulk chemistry, and petrography of olivine-rich achondrites Eagles Nest and LEW88763: Comparison to brachinites 1998M&PS...33...31S
Swindle, T. D., Kring, D. A. Implications of small comets for the noble gas inventories of Earth and Mars 1997GeoRL..24.3113S
Swindle, T. D., Jones, J. H. The xenon isotopic composition of the primordial Martian atmosphere: Contributions from solar and fission components 1997JGR...102.1671S
Swindle, T. D., Hohenberg, C. M., MacPherson, G. J., & Nyquist, L. E., 1996, In Chondrules and the Protoplanetary Nebula (R. Hewins, R. Jones, & E. Scott, eds., University Printing House, Cambridge) Formation times of chondrules and Ca-Al-rich inclusions: Constraints from short-lived radionuclides.
Kring, D. A., et al. Cat Mountain: A meteoritic sample of an impact-melted asteroid regolith 1996JGR...10129353K
Swindle, T. D. 1995, In Volatiles in the Earth and Solar System (K. Farley, ed., American Institute of Physics, New York) How many Martian noble gas reservoirs have we sampled?
Burkland, M. K., Swindle, T. D., Baldwin, S. L. Isothermal heating experiments on Bjurböle: Implications for the release mechanisms of radiogenic 129 Xe 1995GeCoA..59.2085B
Swindle, T. D., Grier, J. A., Burkland, M. K. Noble gases in orthopyroxenite ALH84001: A different kind of martian meteorite with an atmospheric signature 1995GeCoA..59..793S
Drake, M. J., et al. Fractionated martian atmosphere in the nakhlites? 1994Metic..29..854D
Musselwhite, D. S., Drake, M. J., Swindle, T. D. Modeling of iodine-xenon systematics during early outgassing of the earth using experimentally determined silicate melt solubilities and mineral/melt parition coefficients 1994Metic..29R.507M
Swindle, T. D. 1993, In Protostars and Planets III (E. H. Levy, J. I. Lunine, and M. S. Matthews, eds., University of Arizona Press, Tucson) Extinct radionuclides and evolutionary timescales.
Fegley, B. H. Jr., & Swindle, T. D. 1993, In Resources of Near-Earth Space (J. S. Lewis, M. S. Matthews, & M. L. Guerrieri, eds., University of Arizona Press, Tucson) Lunar volatiles: Implications for lunar resource utilization.
Swindle, T. D. Noble gases in ancient asteroidal atmospheres 1993JGR....9815069S
Swindle, T. D., Burkland, M. K., Kring, D. A. Noble Gases in the Brachinites Eagles Nest and LEW 88763 1993Metic..28R.445S
Goswami, J. N., Ion Microprobe Studies of Iodine Contents in Silicate Glasses and in Semarkona Chondrules 1993Metic..28Q.355G
Swindle, T. D., Lewis, J. S., McFadden, L. A. Near-earth asteroids and the history of planetary formation 1992E&S.....4...11S
Caffee, M., Hohenberg, C., Nichols, R., Olinger, C., Goswami, J., Signer, P., Wieler, R., Pedroni, A., & Swindle, T. 1991, In The Sun in Time (C. Sonnett, M. Giampapa, and M. S. Matthews, eds., University of Arizona Press, Tucson) Possible evidence for ancient solar-cosmic-ray-produced rare gases.
Swindle, T. D., Spudis, P. D., Taylor, G. J., Korotev, R. L., Nichols, R. H., & Olinger, C. T. 1991, Proceedings of the 21st Lunar and Planetary Science Conference, Searching for Crisium basin ejecta: Chemistry and ages of Luna 20 impact melts.
Swindle, T. D., Iodine-xenon, chemical, and petrographic studies of Semarkona chondrules - Evidence for the timing of aqueous alteration 1991GeCoA..55.3723S
Musselwhite, D. S., Drake, M. J., Swindle, T. D. Early outgassing of Mars supported by differential water solubility of iodine and xenon 1991Natur.352..697M
Swindle, T. D., et al. Iodine-xenon studies of petrographically and chemically characterized Chainpur chondrules 1991GeCoA..55..861S
Musselwhite, D. S., Drake, M. J., Swindle, T. D. Experimental constraints on planetary outgassing 1990Metic..25..389M
Swindle, T. D., et al. Noble gases in the howardites Bholghati and Kapoeta 1990GeCoA..54.2183S
McKay, D. S., Swindle, T. D., & Greenberg, R. 1989, In Asteroids II (R. Binzel, T. Gehrels, and M. S. Matthews, eds., University of Arizona Press, Tucson) Asteroidal regoliths.
Swindle, T. D. 1988, In Meteorites and the Early Solar System (J. F. Kerridge and M. S. Matthews, eds., University of Arizona Press, Tucson) Trapped noble gases in meteorites.
Swindle, T. D. & Podosek, F. A. 1988, In Meteorites and the Early Solar System (J. F. Kerridge and M. S. Matthews, eds., University of Arizona Press, Tucson) Iodine-xenon dating.
Podosek, F. A. & Swindle, T. D. 1988, In Meteorites and the Early Solar System (J. F. Kerridge and M. S. Matthews, eds., University of Arizona Press, Tucson) Extinct radionuclides.
Podosek, F. A. & Swindle, T. D. 1988, In Meteorites and the Early Solar System (J. F. Kerridge and M. S. Matthews, eds., University of Arizona Press, Tucson) Cosmochronology.
Swindle, T. D., Caffee, M. W., Hohenberg, C. M. Iodine-xenon studies of Allende inclusions - Eggs and the Pink Angel 1988GeCoA..52.2215S
Bernatowicz, T. J., et al. I-Xe systematics in LL chondrites 1988GeCoA..52.1113B
Caffee, M. W., et al. Evidence in meteorites for an active early sun 1987ApJ...313L..31C
Swindle, T. D., Caffee, M. W., Hohenberg, C. M. Xenon and other noble gases in shergottites 1986GeCoA..50.1001S
Swindle, T. D. Iodine-xenon and other noble gas studies of individual chondrules from the Chainpur meteorite 1986PhDT........17S
Swindle, T. D., Caffee, M. W., Hohenberg, C. M., & Taylor, S. R. 1986, In The Origin of the Moon (W. K. Hartmann, R. J. Phillips, and G. J. Taylor, eds., Lunar and Planetary Institute, Houston) I-Pu-Xe dating and the relative ages of the Earth and Moon.
Caffee, M. W., et al. Evidence in meteorites for an active early Sun 1985JGRS...90....6C
Swindle, T. D., et al. Noble gas component organization in Apollo 14 breccia 14318: 129I and 244Pu regolith chronology 1985JGR....90..517S
Swindle, T. D., Caffee, M. W., & Hohenberg, C. M. 1983. In Chondrules and their Origins (E. King, Ed., Lunar and Planetary Institute, Houston). Radiometric ages of chondrules.
Swindle, T. D., et al. I-Xe studies of individual Allende chondrules 1983GeCoA..47.2157S
Caffee, M. W., et al. Cosmogenic neon from precompaction irradiation of Kapoeta and Murchison. 1983JGR....88..267C
Caffee, M. W., et al. Shock disturbance of the I - Xe system. 1982JGR....87..318C
Caffee, M. W., et al. I - Xe ages of individual Bjurbole chondrules. 1982JGR....87..303C