About 780kBC something scattered tektites across the Sunda. Here, slotted for 15 November, is an earlier field: 11 Mya. h/t ScienceDaily.
They haven't found the crater for this. There should be one: tektites form when the meteor hits the ground. Australian ground tends pretty dry today; but the Pliocene was warmer for Australia (which is also a moving target) so might have been more erosive.
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