Its incorrect to say there are no rocks from that period. But they are rarer, and the unconformity is widespread. There are still pockets here and there of rocks from the period for whatever reason escaped whatever it was, probably glaciers . Some of them
Rock vs fossils (Score:5, Insightful)
On one hand the article says there are no rocks from a billion years.
On the other hand, it says that we know about animals back then.
But if there are no rocks, then what are those fossils from which we know about the animals?
Re:Rock vs fossils (Score:4, Informative)
Its incorrect to say there are no rocks from that period. But they are rarer, and the unconformity is widespread. There are still pockets here and there of rocks from the period for whatever reason escaped whatever it was, probably glaciers . Some of them