The rocks that formed Double Arch - also known as the "toilet bowl" because of the large hole in the formation - consisted of fine-grained Navajo sandstone from the late Triassic to early Jurassic ...
They discovered large submersed sandstone formations following the outer margins of Zealandia and deposits of basaltic rock pebbles. Sample locations and inferred geological map of the southern ...
Kara Williams It's easy to see how this natural landmark earned such an ethereal title: These magnificent red rock formations look as though deities could've carved them. However, the sandstone ...