To elaborate further some of the surviving rock from the period may have been offshore where the ice wouldn't have made contact with the rock, or they could have been in deep basins such as rift valleys , or rocks caught in subduction zones, or caught within thrust faults, where some rock had been pushed deeper into the crust in the subduction zone. I know some of the rocks from the period are in the UK and Nova Scotia which were coastal areas at the time like today, but were positioned of the coast of Africa.
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)
To elaborate further some of the surviving rock from the period may have been offshore where the ice wouldn't have made contact with the rock, or they could have been in deep basins such as rift valleys , or rocks caught in subduction zones, or caught within thrust faults, where some rock had been pushed deeper into the crust in the subduction zone. I know some of the rocks from the period are in the UK and Nova Scotia which were coastal areas at the time like today, but were positioned of the coast of Africa.