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  • Conference paper
    Muxworthy AR, Heslop D, Paterson GA, Emmerton Set al., 2008,

    Toward a new non-heating method of determining absolute paleointensities

    , AGU Fall
  • Journal article
    Grieve RAF, Reimold U, Morgan JV, Riller U, Pilkington Met al., 2008,

    Observations and interpretations at Vredefort, Sudbury and Chicxulub: Towards a composite model of a terrestrial impact basin

    , Meteoritics and Planetary Science, Vol: 43, Pages: 855-882
  • Journal article
    Genge MJ, 2008,

    Koronis asteroid dust in Antarctic ice

    , Geology, Vol: 36, Pages: 687-690
  • Journal article
    Morgan JV, 2008,

    , Science, Vol: 321, Pages: 1158-1158

    Paquay et al. (Reports, 11 April 2008, p. 214) report that Osmium isotope ratios in marine sediments can be used to determine the size of a chondritic impacting body. Their assumptions, however, on the fate of an impacting projectile are incorrect, as only a small, unpredictable fraction of the impactor ends up dissolved in seawater.
  • Journal article
    Liu Q, Yu Y, Muxworthy AR, Roberts APet al., 2008,

    , PHYSICS OF THE EARTH AND PLANETARY INTERIORS, Vol: 169, Pages: 100-107, ISSN: 0031-9201
  • Journal article
    Ripperger S, Schiebel R, Rehkamper M, Halliday ANet al., 2008,

    , PALEOCEANOGRAPHY, Vol: 23, ISSN: 0883-8305
    • Cite
    • Citations: 16
  • Journal article
    Vermeesch PM, Morgan JV, 2008,

    , Journal of Geophysical Research Solid Earth, Vol: 113, ISSN: 0148-0227

    Models of the central structure of large impact craters are poorly constrained, partly because of the lack of well-preserved terrestrial examples, and partly because of the extreme nature of impact events. Even large impact craters take only a few minutes to form, during which time rocks from the deep crust move upward many kilometers, interacting with impact melts and breccias before settling to their final position. We construct a new model of central uplift beneath the Chicxulub crater, based upon a well-constrained 3-D velocity model, obtained by jointly inverting seismic traveltime and gravity data. The input tomographic data set has good resolution, and many rays cross the central uplift in many directions. We use laboratory measurements to convert between velocity and density. Our velocity model possesses a high-velocity zone near the crater center, and velocity gradually decreases outside this zone. We use regional refraction data to interpret these velocities in terms of a broad 80-km-wide zone of structural uplift, in which the central rocks originate from the lower crust, and the surrounding rocks from the midcrust and upper crust. This is in contrast with previous models in which the zone of central uplift is either 40–50 km or 150 km wide. Our interpretation is consistent with scaling laws, Yucatán basement lithology, other velocity data, observations at similar-sized terrestrial craters, and dynamic modeling of peak ring formation. Our model of the uplift at Chicxulub can be used to help distinguish between competing models of effective target strength in numerical models of crater formation.
  • Conference paper
    Genge MJ, Taylor S, 2008,

    Barred olivine chondrule fragments among micrometeorites

    , Workshop on Antarctic Meteorites - Search, Recovery, and Classification, Publisher: METEORITICAL SOC, Pages: A47-A47, ISSN: 1086-9379
  • Conference paper
    Horner TJ, Schoenbaechler M, Rehkaemper M, Williams H, Nielsen SG, Halliday AN, Hein JRet al., 2008,

    Ferromanganese crusts as archives of deep-water Cd isotope compositions

    , 18th Annual V M Goldschmidt Conference, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: A392-A392, ISSN: 0016-7037
  • Conference paper
    Baker RGA, Wood BJ, Rehkaemper M, Schoenbaechler M, Nielsen SGet al., 2008,

    Core formation and the Pb and Tl isotope evolution of the silicate Earth

    , 18th Annual V M Goldschmidt Conference, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: A46-A46, ISSN: 0016-7037
  • Conference paper
    Rehkaemper M, Baker RGA, Nielsen SG, Hinkley TK, Toutain JPet al., 2008,

    Thallium isotope constraints on early Cenozoic climate change

    , 18th Annual V M Goldschmidt Conference, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: A782-A782, ISSN: 0016-7037
  • Conference paper
    Schoenbaechler M, Baker RGA, Williams H, Halliday AN, Rehkaemper Met al., 2008,

    The cadmium isotope composition of chondrites and eucrites

    , Workshop on Antarctic Meteorites - Search, Recovery, and Classification, Publisher: METEORITICAL SOC, Pages: A139-A139, ISSN: 1086-9379
  • Conference paper
    Davison TM, Collins GS, Ciesla FJ, 2008,

    Numerical modelling of shock heating in porous planetesmial collisions

    , 71st Annual Meeting of the Meteoritical-Society, Publisher: Meteoritical Society, Pages: A36-A36
  • Conference paper
    Duffy CM, Bland PA, Russell SS, Prior DJ, Mariani E, Kearsley AT, Howard L, Chater R, Ardakani MG, McPhail DS, Shollock BAet al., 2008,

    Characterizing primitive chondrite matrix: A SEM/TEM/EBSD study of Acfer 094

    , Workshop on Antarctic Meteorites - Search, Recovery, and Classification, Publisher: WILEY-BLACKWELL, Pages: A39-A39, ISSN: 1086-9379
  • Journal article
    Collins GS, Morgan J, Barton P, Christeson GL, Gulick S, Urrutia J, Warner M, Wunnemann Ket al., 2008,

    , EARTH PLANET SC LETT, Vol: 270, Pages: 221-230, ISSN: 0012-821X
  • Journal article
    Chang L, Roberts AP, Tang Y, Rainford BD, Muxworthy AR, Chen Qet al., 2008,

    , JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, Vol: 113, ISSN: 2169-9313
    • Cite
    • Citations: 127
  • Conference paper
    Williams W, Krasa D, Muxworthy AR, 2008,

    Assessing the role of magnetostatic interactions using nano-particle arrays (invited)

    , International Conference on Rock Magnetism
  • Journal article
    Genge MJ, 2008,

    , EARTH MOON AND PLANETS, Vol: 102, Pages: 525-535, ISSN: 0167-9295
    • Cite
    • Citations: 30
  • Conference paper
    Muxworthy AR, Heslop D, 2008,

    Interpreting first-order reversal curve (FORC) diagrams; what do they tell us? (invited)

    , 11th Castle Meeting
  • Journal article
    Wuennemann K, Collins GS, Osinski GR, 2008,

    , EARTH AND PLANETARY SCIENCE LETTERS, Vol: 269, Pages: 529-538, ISSN: 0012-821X
    • Cite
    • Citations: 170

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