Physics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986geokh......469f&link_type=abstract
Geokhimiia (ISSN 0016-7525), April 1986, p. 469-479. In Russian.
Physics
Argon Isotopes, Lunar Maria, Lunar Rocks, Radioactive Age Determination, Basalt, Breccia, Gabbro, Lunar Core, Lunik Lunar Probes, Regolith, Tables (Data)
Scientific paper
Ar-isotope ages were determined in four types of rocks delivered by the Luna-24 probe from a region of Mare Crisium: basalt, gabbro, cristobalite gabbro, and a sample of inland cataclastic rocks. Isotope-estimated ages of the first three rock types were in the range of 3.25-3.54 billion years, while the cataclastic rocks were found to be about 3.75 billion yr old. Radiation age, indicating the duration of exposure to cosmic rays, varied between 189 and 1043 million years. The analyzed rocks included two categories: (1) a group aged 3.45-3.54 billion years, found in the upper layers of the drilled out column, and (2) a younger rock group, aged 3.25-3.39 billion yr, from deep sample layers. Such subdivision seems to indicate that the younger rock group was associated with the crater Fahrenheit ejecta, covered some 200-300 million years later by ejecta containing high amounts of regolith breccias containing materials from neighboring ancient regions of Mare Crisium.
Fugzan M. M.
Kolesov Gennadii M.
Min D. V.
Shukoliukov Iu. A.
Tarasov L. S.
No associations
LandOfFree
Age determination of lunar rocks from Mare Crisium by the Ar-40/Ar-39 method does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Age determination of lunar rocks from Mare Crisium by the Ar-40/Ar-39 method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Age determination of lunar rocks from Mare Crisium by the Ar-40/Ar-39 method will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1102350