Evidence for a cataclysm ~4.0-3.8 Gy ago

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A LATE HEAVY BOMBARDMENT ?Evidence for a cataclysm ~4.0-3.8 Gy ago:On Earth, the oldest minerals are more than 4 Gyr old,but the oldest full rock is only 3.8 Gyr (Isua, Greenland).Was the surface reprocessed 3.9 Gyr ago ?Counter-argument:Plate tectonics may have swallowed older rocks.
A LATE HEAVY BOMBARDMENT ?DECAY RATE OF POST-PLANET FORMATION POPULATIONNectaris, Serenitatis,Imbrium and OrientaleBasins:–If formed between 3.90 < t< 3.82-3.75 Gy, the totalmass of the Post planetformationpopulation had tobe ~5-8 M EARTH–If formed between 4.12 < t< 3.82-3.75 Gy, the totalmass had to be at least 0.7M EARTHCollisional erosion increases both values by a factor of 20!Declining Bombardment Model is Unrealistic for LHB!From Bottke et al., Icarus, 2006.
Page 1 and 2: PLANETARY FORMATION5) THE SOLAR SYS
Page 3 and 4: MIGRATION in the SOLAR SYSTEMA gian
Page 5: MIGRATION in the SOLAR SYSTEMIn add
Page 8 and 9: MIGRATION in the SOLAR SYSTEMAs the
Page 10 and 11: MIGRATION in the SOLAR SYSTEMOnce t
Page 12 and 13: A LATE HEAVY BOMBARDMENT ?
Page 14 and 15: A LATE HEAVY BOMBARDMENT ?The Moon'
Page 16 and 17: Evidence for acataclysm ~4.0-3.8Gy
Page 20 and 21: A LATE HEAVY BOMBARDMENT ?
Page 22 and 23: A LATE HEAVY BOMBARDMENT ?Some fact
Page 24 and 25: PLANETESIMALS DRIVEN MIGRATION
Page 30 and 31: PLANETESIMALS DRIVEN MIGRATION~1%
Page 36 and 37: PLANETESIMALS DRIVEN MIGRATIONEject
Page 38 and 39: The NICE MODEL
Page 40 and 41: The NICE MODELR. Gomes, H.F. Leviso
Page 42 and 43: The NICE MODELII: A cometaryand ast
Page 44 and 45: JUPITER's TROJANSAt the moment of t
Page 46 and 47: JUPITER's TROJANSSimulations show t
Page 48 and 49: IRREGULAR SATELLITES
Page 50 and 51: IRREGULAR SATELLITES
Page 52 and 53: IRREGULAR SATELLITESUranusNeptuneSa
Page 54 and 55: KUIPER BELT ORIGINDuring the outwar
Page 56 and 57: KUIPER BELT ORIGINDistribution in i
Page 58 and 59: KUIPER BELT ORIGINReproduction of t
Page 60: CONCLUSIONSAlthough the distributio

Evidence for a cataclysm ~4.0-3.8 Gy ago

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