Chinese Journal of Geochemistry

, Volume 31, Issue 2, pp 128–135 | Cite as

Space weathering simulation and spectrum decoding

  • Sen Hu
  • Yangting Lin


Visible and near-infrared spectra are routinely used to achieve mineral abundances and mineral chemistry of the global surfaces of the Moon and asteroids. However, these spectra can be significantly modified by space weathering, including micrometeorite impacting, solar wind implanting and cosmic ray irradiation. In this paper we report results of laser-bombarding experiments on the Jilin ordinary chondrite, simulating micrometeorite impacting on the surface of asteroids. After laser bombardment, the spectra became significantly redder and moderately darker. With the Modified Gaussian Model (MGM) method, the absorption band positions of olivine can be decoded from the modified spectra, which are correlated with their fayalite contents. In addition, a continuum of the modified spectra can be decoded, and its slope may be used to depict the degree of space weathering. However, relative strengths of the absorption sub-bands of olivine and pyroxenes show significant variant after the bombardment, hence they cannot be used to estimate the relative abundances of high-Ca to low-Ca pyroxenes of the lunar surface and other matured surfaces of asteroids.

Key words

space weathering meteorite asteroid spectrum impact 


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  1. Adams J. (1974) Visible and near-infrared diffuse reflectance spectra of pyroxenes as applied to remote sensing of solid objects in the solar system [J]. Journal of Geophysical Research. 79, 4829–4836.CrossRefGoogle Scholar
  2. Anand M., Taylor L.A., Nazarov M.A., Shu J., Mao H.K., and Hemley R.J. (2004) Space Weathering on Airless Planetary Bodies: Clues from the Lunar Mineral Hapkeite [C]. Proceedings of the National Academy of Sciences of the United States of America. 101, 6847–6851.CrossRefGoogle Scholar
  3. Brunetto R. and Strazzulla G. (2005) Elastic collisions in ion irradiation experiments: A mechanism for space weathering of silicates [J]. Icarus. 179, 265–273.CrossRefGoogle Scholar
  4. Brunetto R., Romano F., Blanco A., Fonti S., Martino M., Orofino V., and Verrienti C. (2006) Space weathering of silicates simulated by nanosecond pulse UV excimer laser [J]. Icarus. 180, 546–554.CrossRefGoogle Scholar
  5. Brunetto R., Roush T.L., Marra A.C., and Orofino V. (2007) Optical characterization of laser ablated silicates [J]. Icarus. 191, 381–393.CrossRefGoogle Scholar
  6. Burns R.G. (1993) Mineralogical Applications of Crystal Field Theory [M]. Cambridge University Press, New York.Google Scholar
  7. Chapman C.R. (2004) Space weathering of asteroid surfaces [J]. Annual Review of Earth and Planetary Sciences. 32, 539–567.CrossRefGoogle Scholar
  8. Cloutis E.A., Gaffey M.J., Jackowski T.L., and Reed K.L. (1984) The spectral properties of olivine-pyroxene mixtures. In Lunar and Planetary Institut Science Conference [C]. pp.174–175. Lunar and Planetary Insititute, Houston, Texas.Google Scholar
  9. Cloutis E.A., Gaffey M.J., Jackowski T.L., and Reed K.L. (1986) Calibrations of phase abundance, composition, and particle size distribution for olivine-orthopyroxene mixtures from reflectance spectra [J]. Journal of Geophysical Research. 91, 11641–11653.CrossRefGoogle Scholar
  10. Cloutis E.A., Gaffey M.J., Smith D.G.W., and Lambert R.S.J. (1990a) Reflectance spectra of glass-bearing mafic silicate mixtures and spectral deconvolution procedures [J]. Icarus. 86, 383–401.CrossRefGoogle Scholar
  11. Cloutis E.A., Gaffey M.J., Smith D.G.W., and Lambert R.S.J. (1990b) Reflectance spectra of ‘featureless’ materials and the surface mineralogies of M- and E-class asteroids [J]. Journal of Geophysical Research. 95, 281–293.CrossRefGoogle Scholar
  12. Cloutis E.A. and Gaffey M.J. (1991) Pyroxene spectroscopy revisited: Spectral-compositional correlations and relationship to geothermometry [J]. Journal of Geophysical Research. 96, 22809–22826.CrossRefGoogle Scholar
  13. Cloutis E.A., Hawthorne F.C., Mertzman S.A., Krenn K., Craig M.A., Marcino D., Methot M., Strong J., Mustard J.F., Blaney D.L., Bell J.F., and Vilas F. (2006) Detection and discrimination of sulfate minerals using reflectance spectroscopy [J]. Icarus. 184, 121–157.CrossRefGoogle Scholar
  14. Cloutis E.A., Bailey D.T., and Hardersen P.S. (2008) Reflectance spectra of iron meteorite powders. In Lunar and Planetary Institute Science Conference [C]. pp.1082. Lunar and Planetary Institute, League City, Texas.Google Scholar
  15. Deer W., Howie R., and Zussman J. (1997) Rock-forming Minerals [M]. Geological Society Pub. House, Bath, UK.Google Scholar
  16. Gaffey M.J. (1986) The spectral and physical properties of metal in meteorite assemblages: Implications of asteroid surface materials [J]. Icarus. 66, 468–486.CrossRefGoogle Scholar
  17. Gaffey M.J., Burbine T.H., Piatek J.L., Reed K.L., Chaky D.A., Bell J.F., and Brown R.H. (1993) Mineralogical variations within the S-type asteroid class [J]. Icarus. 106, 573.CrossRefGoogle Scholar
  18. Gaffey M.J. (2010) Space weathering and the interpretation of asteroid reflectance spectra [J]. Icarus. 209, 564–574.CrossRefGoogle Scholar
  19. Hapke B. (1965) Effects of a simulated solar wind on the photometric properties of rocks and powders [J]. New York Academy Sciences Annals. 123, 711–721.CrossRefGoogle Scholar
  20. Hapke B. (2001) Space weathering from Mercury to the asteroid belt [J]. Journal of Geophysical Research. 106, 10039–10073.CrossRefGoogle Scholar
  21. Hiroi T., Abe M., Kitazato K., Abe S., Clark B.E., Sasaki S., Ishiguro M., and Barnouin-Jha O.S. (2006) Developing space weathering on the asteroid 25143 Itokawa [J]. Nature. 443, 56–58.CrossRefGoogle Scholar
  22. Hiroi T. (2009) Space weathering. In 32nd Symposium on Antarctica Meteorites [C]. pp.19. National Institute of Polar Research, Tokyo.Google Scholar
  23. Hutchison R. (2004) Meteorites: A Petrologic, Chemical and Isotopic Synthesis [M]. Cambridge University Press, London.Google Scholar
  24. Keller L.P. and McKay D.S. (1993) Discovery of vapor deposits in the lunar regolith [J]. Science. 261, 1305–1307.CrossRefGoogle Scholar
  25. Lin Wenzhu and Gao Laizhi (1991) Spectral reflectance of recently fallen chondrites and some igneous rocks in China [J]. Chinese Journal of Geochemistry. 10, 383–389.CrossRefGoogle Scholar
  26. Moretti P.F., Maras A., and Folco L. (2007) Space weathering, reddening and darkening of asteroids: A complex problem [J]. Advances in Space Research. 40, 258–261.CrossRefGoogle Scholar
  27. Mustard J.F. and Sunshine J.M. (1994) Limits on the mafic mineralogy of Mars through MGM analysis of ISM spectra. In Lunar and Planetary Institute Science Conference [C]. pp.961. Lunar and Planetary Institute, Houston, Texas.Google Scholar
  28. Nimura T., Hiroi T., Ohtake M., Ueda Y., Abe M., and Fujiwara A. (2006) An attempt of restricting olivine bands in the Modified Gaussian Model. In Lunar and Planetary Science Conference [C]. pp.1600.Google Scholar
  29. Noble S.K., Pieters C.M., Taylor L.A., Morris R.V., Allen C.C., McKay D.S., and Keller L.P. (2001) The optical properties of the finest fraction of lunar soil: Implications for space weathering [J]. Meteoritics and Planetary Science. 36, 31–42.CrossRefGoogle Scholar
  30. Pieters C.M., Taylor L.A., Noble S.K., Keller L.P., Hapke B., Morris R.V., Allen C.C., McKay D.S., and Wentworth S. (2000) Space weathering on asteroids: A mystery resolved with lunar samples [J]. Meteoritics and Planetary Science. 35, 1101–1107.CrossRefGoogle Scholar
  31. Sasaki S., Nakamura K., Hamabe Y., Kurahashi E., and Hiroi T. (2001) Production of iron nanoparticles by laser irradiation in a simulation of lunar-like space weathering [J]. Nature. 410, 555–557.CrossRefGoogle Scholar
  32. Smith J.V. and Brown W.L. (1988) Feldspar Minerals: Volume 1, Crystal Structures, Physical, Chemical, and Microtextural Properties [M]. Springer-Verlag, Berlin.Google Scholar
  33. Strazzulla G., Dotto E., Binzel R., Brunetto R., Barucci M.A., Blanco A., and Orofino V. (2005) Spectral alteration of the meteorite Epinal (H5) induced by heavy ion irradiation: a simulation of space weathering effects on near-Earth asteroids [J]. Icarus. 174, 31–35.CrossRefGoogle Scholar
  34. Sunshine J.M., Pieters C.M., and Pratt S.F. (1988) Gaussian analysis of pyroxene reflectance spectra. In Lunar and Planetary Institute Science Conference [C]. pp.1151. Lunar and Planetary Institute. Houston, Texas.Google Scholar
  35. Sunshine J.M. and Pieters C.M. (1989) Quantitative deconvolution of the 1 μm olivine absorption feature. In Bulletin of the American Astronomical Society [C]. pp.967. American Astronomical Society, Providence, Rhode Island.Google Scholar
  36. Sunshine J.M., Pieters C.M., and Pratt S. (1990) Deconvolution of mineral absorption bands: An improved approach [J]. Journal of Geophysical Research. 95, 6955–6966.CrossRefGoogle Scholar
  37. Sunshine J.M. and Pieters C.M. (1992) Extracting olivine compositions from asteroid spectra using the Modified Gaussian Model. In Bulletin of the American Astronomical Society [C]. pp.940. American Astronomical Society, Munich, Germany.Google Scholar
  38. Sunshine J.M., McFadden L.A., and Pieters C.M. (1993) MGM analyses of EETA 79001 lithologies: Implications for remote compositional investigations. In Bulletin of the American Astronomical Society [C]. pp.1135. American Astronomical Society, Boulder, Colorado.Google Scholar
  39. Sunshine J.M. and Pieters C.M. (1993) Estimating modal abundances from the spectra of natural and laboratory pyroxene mixtures using the modified Gaussian model [J]. Journal of Geophysical Research. 98, 9075–9087.CrossRefGoogle Scholar
  40. Sunshine J.M. and Mustard J.F. (1994) Quantification of variations in the mafic mineralogy of Mars through MGM analysis of ISM spectra. In Bulletin of the American Astronomical Society [C]. pp. 1113. American Astronomical Society, Bethesda, Maryland.Google Scholar
  41. Sunshine J.M., Binzel R.P., Burbine T.H., and Bus S.J. (1997) Diversity in the iron content of olivine rich asteroids as revealed by MGM analyses of new SMASSIR spectra. In Bulletin of the American Astronomical Society [C]. pp.964. American Astronomical Society, Cambridge, Massachusetts.Google Scholar
  42. Sunshine J.M. and Pieters C.M. (1998) Determining the composition of olivine from reflectance spectroscopy [J]. Journal of Geophysical Research. 103, 13675–13688.CrossRefGoogle Scholar
  43. Sunshine J.M., Pieters C.M., Pratt S.F., and McNaron-Brown K.S. (1999) Absorption band modeling in reflectance spectra: Availability of the Modified Gaussian Model. In Lunar and Planetary Institute Science Conference [C]. pp.1306. Lunar and Planetary Institute, Houston, Texas.Google Scholar
  44. Sunshine J.M., Hinrichs J.L., and Lucey P.G. (2000) Temperature dependence of individual absorptions bands in olivine: Implications for inferring compositions of asteroid surfaces from spectra. In Lunar and Planetary Institute Science Conference [C]. pp.1605. Lunar and Planetary Institute. Houston, Texas.Google Scholar
  45. Wang Daode, Liu Jingfa, Li Zhaohui, Chen Yongheng, Yi Weixi, Lin Yangting, Hu Ruiying, Huang Wankang, and Dai Chengda (1993) Introduction of Chinese Meteorites [M]. Science Express, Beijing (in Chinese).Google Scholar
  46. Xie Hongsen, Fang Hong, and Ouyang Ziyuan (1989) On the chemical evolution of upper mantle of the early Earth: An experimental study on melting of the silicate phase in Jilin chondrite at high pressures [J]. Chinese Journal of Geochemistry. 8, 171–178.CrossRefGoogle Scholar
  47. Xie Xiande and Huang Wankang (1991) Thermal and collision history of Jilin (H5) and Qingzhen (EH3) chondrites [J]. Chinese Journal of Geochemistry. 10, 109–115.CrossRefGoogle Scholar
  48. Xie Xiande and Wang Daode (1992) The behavior of Fe-Ni metal during thermal metamorphism of the Jilin chondrite [J]. Chinese Journal of Geochemistry. 11, 10–28.CrossRefGoogle Scholar
  49. Yamada M., Sasaki S., Nagahara H., Fujiwara A., Hasegawa S., Yano H., Hiroi T., Ohashi H., and Otake H. (1999) Simulation of space weathering of planet-forming materials: Nanosecond pulse laser irradiation and proton implantation on olivine and pyroxene samples [J]. Earth Planets and Space. 51, 1255–1265.Google Scholar

Copyright information

© Science Press, Institute of Geochemistry, CAS and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Key Laboratory of the Earth’s Deep Interior, Institute of Geology and GeophysicsChinese Academy of ScienceBeijingChina
  2. 2.Graduate University of Chinese Academy of SciencesBeijingChina

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