Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974icar...23...97b&link_type=abstract
Icarus, vol. 23, Sept. 1974, p. 97-107.
Astronomy and Astrophysics
Astronomy
3
Chronology, Earth-Moon System, Lunar Evolution, Planetary Evolution, Planetary Mass, Astronomical Catalogs, Coalescing, Half Life, Impact Damage, Lunar Craters, Lunar Maria, Mass Distribution, Planetary Structure, Statistical Analysis
Scientific paper
The bodies which produced the premare impact craters on the moon contained a much higher proportion of smaller bodies in the earliest observable times than subsequently. This suggests that the earth and moon accreted from small objects with only an occasional large planetoid. If the earliest observable lunar craters are 4.3 b.y. old, the half-life of the primitive planetesimals which produced the giant lunar craters larger than 161 km in diameter, was 143 m.y., while the half-life of the primitive planetesimals which produced lunar craters larger than 1 km in diameter was only 88 m.y. The half-life of the bodies which produced 1-km craters was still shorter, about 75 m.y.
No associations
LandOfFree
On the accretion of the earth and moon 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 On the accretion of the earth and moon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the accretion of the earth and moon will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1584186