Delineating the major KREEP-bearing terranes on the moon with global measurements of absolute thorium abundances

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The Lunar Prospector (LP) Gamma-Ray Spectrometer (GRS) has been used to map the global composition of thorium on the lunar surface. Previous LP results of relative thorium abundances demonstrated that thorium is highly concentrated in and around the nearside western maria and less so in the South Pole Aitken (SPA) basin. Using new detector modeling results and a larger data set, the authors present here a global map of absolute thorium abundances on a 2{degree} by 2{degree} equal-area pixel scale. Because thorium is a tracer of KREEP-rich material, these data provide fundamental information regarding the locations and importance of terranes ... continued below

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2 p.

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Lawrence, D.J.; Feldman, W.C.; Barraclough, B.L.; Elphic, R.C.; Prettyman, T.H.; Binder, A.B. et al. March 1, 1999.

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The Lunar Prospector (LP) Gamma-Ray Spectrometer (GRS) has been used to map the global composition of thorium on the lunar surface. Previous LP results of relative thorium abundances demonstrated that thorium is highly concentrated in and around the nearside western maria and less so in the South Pole Aitken (SPA) basin. Using new detector modeling results and a larger data set, the authors present here a global map of absolute thorium abundances on a 2{degree} by 2{degree} equal-area pixel scale. Because thorium is a tracer of KREEP-rich material, these data provide fundamental information regarding the locations and importance of terranes that are rich in KREEP bearing materials.

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2 p.

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OSTI as DE99002047

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  • Lunar and planetary science conference, Houston, TX (United States), 15-19 Mar 1999

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  • Other: DE99002047
  • Report No.: LA-UR--99-328
  • Report No.: CONF-990303--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 329552
  • Archival Resource Key: ark:/67531/metadc685315

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  • March 1, 1999

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  • July 25, 2015, 2:20 a.m.

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  • March 1, 2016, 3:51 p.m.

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Lawrence, D.J.; Feldman, W.C.; Barraclough, B.L.; Elphic, R.C.; Prettyman, T.H.; Binder, A.B. et al. Delineating the major KREEP-bearing terranes on the moon with global measurements of absolute thorium abundances, article, March 1, 1999; New Mexico. (digital.library.unt.edu/ark:/67531/metadc685315/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.