Back on the beach 360 million years later

 The sandstone on the south-west end of Bute is remarkable.

There are whole large quartz pebbles in the matrix. This sandstone is supposed to be 360 million years old. Now modern weathering is releasing the pebbles back onto a beach. It's been an interesting ride. Started in the mountains and eroded, carried by a river to a beach 360 million years ago. Then part of a bigger sedimentary rock trapped underground for 360 million years. Now back on a beach to continue being broken down. A real twist in the usual rock cycle story.