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Rb-Sr age and content of potassium, rubidium strontium, barium, and rare earths in surface material from the Sea of Fertility (1974)

Loubet, M. ; Allegre, C. J. ; Birck, J. L. ; [et al.]

In: CASI

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Publication Date: 2006-01-11

Description: The Luna 16 automatic station returned from the Sea of Fertility a 35 cm long column of lunar surface material. 1 g of the Luna 16 lunar surface material, taken at a depth of 22 cm, consists of fine material: surface material and fine fragments of rocks from 1 to 4 mm in diameter. Analyses made on 17 mg of the fine lunar surface material are presented. The results obtained for the Luna 16 surface material are plotted on the diagram of the isotopic evolution of strontium and show that this surface material is most depleted of radiogenic Sr-87 of all the known lunar surface materials and that the point characterizing Lunar 16 lies somewhat to the right of the line corresponding to an age of 4.6 billion years.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Lunar Soil from the Sea of Fertility (NASA-TT-F-15881); p 436-440

Format: text

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