Unusual track preservation

I was recently done in a nature reserve and came across this unusually, even uniquely, preserved tracks. While it may not be entirely clear at first glance these are actually tracks preserved on the surface of the water. A thin film of oil was on the surface and when a pond skater moved across it, the oil and water were disturbed, but the stiffer layer of oil didn’t flow back to fill the gaps. The water in the pod was perfectly still and there was no breeze so there was nothing to move this and collapse them, leaving the ‘prints’ in place. Not something that’ll be turning up in the fossil record anytime soon I suspect.

1 Response to “Unusual track preservation”


  1. 1 Kilian Hekhuis 07/10/2011 at 11:06 am

    Shows beautifully that a pond skater doesn’t actually skate, but hops, on the water.


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