Statistics – Applications
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984lpsc...14..487s&link_type=abstract
(American Geophysical Union and NASA, Lunar and Planetary Science Conference, 14th, Houston, TX, Mar. 14-18, 1983) Journal of Ge
Statistics
Applications
Argon Isotopes, Chronology, Glass, Lunar Rocks, Petrology, Apollo 15 Flight, Impact Melts, Laser Applications, Microinstrumentation, Solidification, Moon, Samples, Lunar, Argon, Isotopes, Ages, Dating Techniques, Apollo 15, Green Glass, Yellow Glass, Volcanism, Comparisons, Laser Microprobe, Rare Gases, Techniques, Glasses, Classification, Solidification Age, Comparisons, Isotopic Ratios, Procedure
Scientific paper
The laser microprobe was used to extend the Ar-39-Ar-40 method to small, low potassium glassy objects in order to determine the ages of Apollo 15 yellow volcanic, green volcanic group A, and green volcanic group D glasses. The apparent solidification ages for these glasses are 3.62 + or -0.07, 3.41 + or -0.12, and 3.35 + or -.18 aeons, respectively. The ages for group A and d green glasses agree well with previously reported ages for aliquots of 'bulk' green glass. No significant difference in the solidification age was found between the A and D groups. The average exposure ages for the yellow and green glasses from 15426 and 15427 were indistinguishable, with ages between 300 and 275 m.y.
Delano John W.
Spangler R. R.
Warasila R.
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