Lunar evolution - The first 600 million years

Details Lunar evolution - The first 600 million years Lunar evolution - The first 600 million years

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975georl...2...29h&link_type=abstract

Geophysical Research Letters, vol. 2, Jan. 1975, p. 29-32.

Physics

6

Argon Isotopes, Lunar Evolution, Lunar Rocks, Radioactive Age Determination, Extraction, Feldspars, Lunar Landing Sites, Neutron Irradiation

Scientific paper

From a stepwise-heating experiment on neutron-irradiated samples of whole rock and a plagioclase separate, an Ar-40/Ar-39 age of 4.26 plus or minus 0.02 G.y. was determined for the Apollo 17 troctolite 76535. This rock is believed to have formed as a result of very slow cooling at a depth of 10 to 40 km, and hence furnishes direct evidence that the moon was chemically zoned before 4.26 G.y. The age of the rock is associated with the Serenitatis Basin forming event. The formation of the Serenitatis Basin is then deduced to have occurred 4.26 plus or minus 0.02 G.y. ago, about 300 m.y. before the Imbrium event. It appears that the major basin forming era on the near side of the moon lasted longer than 300 m.y. The grouping of many lunar rock ages at 3.9 to 4.0 G.y. is most likely due to the fact that the Imbrium ejecta predominates all highland landing sites.

Affiliated with

Also associated with

No associations

Rating

Lunar evolution - The first 600 million years 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 Lunar evolution - The first 600 million years, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lunar evolution - The first 600 million years will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1750645