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Journal articleCollins GS, Melosh HJ, Ivanov BA, 2004,
Modeling damage and deformation in impact simulations
, METEORIT PLANET SCI, Vol: 39, Pages: 217-231, ISSN: 1086-9379 -
Journal articleButterworth AL, Aballain O, Chappellaz J, et al., 2004,
Combined element (H and C) stable isotope ratios of methane in carbonaceous chondrites
, MON NOT R ASTRON SOC, Vol: 347, Pages: 807-812, ISSN: 0035-8711We have performed the first ever combined-element stable isotopic measurements of extraterrestrial molecules. Methane from two carbonaceous chondrites, Murchison and Cold Bokkeveld, was measured for its hydrogen and carbon isotopic compositions. The combined isotopic composition of meteoritic methane reveals information about the indigenous nature of volatile aliphatic organic matter in meteorites and its probable extraterrestrial source environment. Deuterium enrichments relative to the solar nebula 4.6 Gyr ago reflect a contribution from low-temperature chemical reactions in interstellar space. Similar carbon but different hydrogen isotopic compositions for methane in the two meteorite samples probably represent comparable primary origins but varying levels of secondary processing and exchange with isotopically light hydrogen. Our high precision laboratory-obtained measurements provide valuable reference points for observational spectroscopists undertaking astronomical investigations of the stable isotopic composition of extraterrestrial methane.
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Journal articleTong CH, White RS, Warner MR, 2004,
Effects of tectonism and magmatism on crack structure in oceanic crust: A seismic anisotropy study
, GEOLOGY, Vol: 32, Pages: 25-28, ISSN: 0091-7613- Author Web Link
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- Citations: 9
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Book chapterMuxworthy A R, Williams W, 2004,
Distribution anisotropy: the influence of magnetic interactions on the anisotropy of magnetic remanence
, Magnetic Fabric: Methods and Applications, Editors: Martín-Hernández F, Lüneburg M, Aubourg C, Jackson M, London, Publisher: Geological Society, Pages: 37-47, ISBN: 1-86239-170-X -
Journal articlePearson VK, Kearsley AT, Sephton MA, 2004,
The in-situ detection of organic material in extraterrestrial samples
, MICROS ANAL, Pages: 5-10, ISSN: 0958-1952 -
Book chapterPierazzo E, Collins G, 2004,
A brief introduction to hydrocode modeling of impact cratering
, Cratering in marine environments and on ice, Editors: Dypvik, Burchell, Claeys, New York, Publisher: Springer, Pages: 323-340, ISBN: 9783540406686 -
Conference paperMuxworthy AR, Williams W, 2004,
Viscous behaviour of multidomain magnetite
, AGU Fall -
Conference paperWilliams W, Muxworthy AR, Ridley P, 2004,
Magnetite morphology and micromagnetic modelling: Characteristics of magnetotactic bacteria (invited)
, AGU Fall -
Journal articleButterworth AL, Aballain A, Chappellaz J, et al., 2004,
Combined element (H and C) stable isotope ratios of methane in carbonaceous chondrites
, MON NOT R ASTRON SOC, Vol: 347, Pages: 807-812, ISSN: 0035-8711 -
Conference paperGraham GA, Kearsley AT, Butterworth AL, et al., 2004,
Extraction and microanalysis of cosmic dust captured during sample return missions: laboratory simulations
, Kidlington, Scientific exploration, planetary protection, active experiments and dusty plasmas, 2nd world space congress/34th COSPAR scientific assembly, Houston, TX, 10 - 19 October 2002, Publisher: Pergamon-Elsevier Science Ltd, Pages: 2292-2298 -
Book chapterSephton MA, 2004,
Origin of Life
, An introduction to astrobiology, Editors: Gilmour, Sephton, Cambridge, Publisher: Cambridge University Press, Pages: 1-41, ISBN: 9780521837361 -
BookGilmour I, Sephton MA, 2004,
An introduction to astrobiology
, Cambridge, Publisher: Cambridge University Press, ISBN: 9780521837361 -
Journal articleSephton MA, Verchovksy AB, Wright IP, 2004,
Carbon and nitrogen isotope ratios in meteoritic organic matter; indicators of alteration processes on the parent asteroid
, INT J ASTROBIOL, Vol: 3, Pages: 221-228, ISSN: 1473-5504 -
Journal articleWombacher F, Rehkämper M, 2004,
Problems and suggestions concerning the notation of cadmium stable isotope compositions and the use of reference materials
, GEOSTANDARDS AND GEOANALYTICAL RESEARCH, Vol: 28, Pages: 173-178, ISSN: 1639-4488- Author Web Link
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- Citations: 43
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Book chapterSephton MA, 2004,
Compound specific isotope analysis of the organic constituents in meteorites
, Handbook of stable isotope analytical techniques, Editors: de Groot, London, Publisher: Elsevier, Pages: 229-236, ISBN: 9780444511140 -
Book chapterRehkamper M, Wombacher F, Aggarwal JK, 2004,
Stable isotope analysis by multiple collector ICP-MS
, Handbook of Stable Isotope Analytical Techniques, Editors: Groot P, Amsterdam, Publisher: Elsevier -
Conference paperGoes S, Cammarano F, Hansen U, 2004,
Synthetic seismic signature for thermal mantle plumes
, 13th Annual VM Goldschmidt Conference, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: 401-417 -
Journal articleSchönbächler M, Rehkämper M, Lee DC, et al., 2004,
Ion exchange chromatography and high precision isotopic measurements of zirconium by MC-ICP-MS
, ANALYST, Vol: 129, Pages: 32-37, ISSN: 0003-2654- Author Web Link
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- Citations: 60
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Journal articleWilliams W, Muxworthy AR, 2004,
Magnetostatic interaction fields in First-order-reversal-curve (FORC) diagrams (poster)
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Journal articleWatson JS, Pearson VK, Sephton MA, et al., 2004,
Molecular, isotopic and in-situ analytical approaches to the study of meteoritic organic material
, International Journal of Astrobiology, Vol: 3, Pages: 107-116, ISSN: 1473-5504
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