Ancient sand dunes Nov 10 Written By Bowen Li How the ancient sand dunes become today’s sandstone? Initially, it’s a loose dune. After 180 million of years, it has been a hard sandstone, though it still kept the crossbedding. What is the binders to make sands into stone? Bowen Li
Ancient sand dunes Nov 10 Written By Bowen Li How the ancient sand dunes become today’s sandstone? Initially, it’s a loose dune. After 180 million of years, it has been a hard sandstone, though it still kept the crossbedding. What is the binders to make sands into stone? Bowen Li