The onset of the lunar cataclysm as recorded in its ancient crater populations
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چکیده
منابع مشابه
A sawtooth-like timeline for the first billion years of lunar bombardment
We revisit the early evolution of the Moon’s bombardment. Our work combines modeling (based on plausible projectile sources and their dynamical decay rates) with constraints from the lunar crater record, radiometric ages of the youngest lunar basins, and the abundance of highly siderophile elements in the lunar crust and mantle. We deduce that the evolution of the impact flux did not narrow imp...
متن کاملConstraints on the source of lunar cataclysm impactors
0019-1035/$ see front matter 2009 Elsevier Inc. A doi:10.1016/j.icarus.2009.12.013 * Corresponding author. Fax: +1 617 496 6958. E-mail address: [email protected] (M. Ćuk). Multiple impact basins formed on the Moon about 3.8 Gyr ago in what is known as the lunar cataclysm or Late Heavy Bombardment. Many workers currently interpret the lunar cataclysm as an impact spike primarily caused by mai...
متن کاملRebuttal to the comment by Malhotra and Strom on ‘‘Constraints on the source of lunar cataclysm impactors’’
0019-1035/$ see front matter 2011 Elsevier Inc. A doi:10.1016/j.icarus.2011.08.011 ⇑ Corresponding author at: Harvard-Smithsonian Garden Street, Cambridge, MA 02138, USA. Fax: +1 61 E-mail address: [email protected] (M. Ćuk). Ćuk et al. (Ćuk, M. Gladman, B.J., Stewart, S.T. [2010]. Icarus 207 590–594) concluded that the the lunar cataclysm (late heavy bombardment) was recorded in lunar Imbria...
متن کاملLunar impact basins: Stratigraphy, sequence and ages from superposed impact crater populations measured from Lunar Orbiter Laser Altimeter (LOLA) data
[1] Impact basin formation is a fundamental process in the evolution of the Moon and records the history of impactors in the early solar system. In order to assess the stratigraphy, sequence, and ages of impact basins and the impactor population as a function of time, we have used topography from the Lunar Orbiter Laser Altimeter (LOLA) on the Lunar Reconnaissance Orbiter (LRO) to measure the s...
متن کاملUsing the Moon to explore early solar system bombardment
A decade-long campaign to test the lunar cataclysm hypothesis continues to support an intense period of bombardment several hundred million years after solar system formation. Geological, geochemical, and isotopic data imply that (i) basin-forming impacts occurred on the Moon ∼4 Ga and (ii) impacts occurred on asteroids ∼3.6–4.1 Ga, implying the lunar cataclysm is actually an inner solar system...
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