During a geological excursion following a recent International Continental Drilling Project (ICDP) field workshop near Barberton, the world's oldest raindrop imprints were discovered. While attending the field trip led by Dr. Martin Homann to the so-called "Laura's Delta" of the Moodies Group on Oct. 10th, Tyler Robinson, a local geologist, came across a particular sandstone slab. Mudcracked shale topping that slab revealed upon closer examination several circular and elongate depressions 2-3 mm in diameter which were identified by Wlady Altermann as fossilized raindrop imprints, to which all field trip participants agreed.
展开▼
