Exploring abrupt climate change induced by comets and asteroids during human history

Ancient tree and plant parts found in Greenland’s youthful Hiawatha Crater

Dr. Kurt Kjaer collecting samples at Hiawatha Crater

The large variety of Hiawatha impactite grains containing terrestrial organic matter with a likely age between 2.5 Ma and 50 ka support the conclusion in [1] that the crater itself is not much eroded and very young, and the possibility of an age of less than 50 ka remains open.


One Response

  1. Diid I miss the section detailing the sampling methods and locations?

    There is a WIDE river/stream nearly bisecting the crater. This water flow could be bringing all sorts of materials to the river-exit side of the crater.

    Color me doubtful on this, given this shortcoming.


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