Unusual desert rocks suggest unknown microorganism that uses marble and limestone as a habitat
In the desert areas of Namibia, Oman, and Saudi Arabia, research work has revealed unusual structures that are probably due ...
Miami University1y
Local Geology
Glacial Till A slightly smaller "ball" of till was shaped by its journey down the stream bed, during which time it became armored by picking up several small rocks. Rocks Along the Stream Bed ...
BBC2y
Rock types
Chalk, limestone, shale, and sandstone are all ... the processes by which the sediment is formed. For example, small pebbles of rock are rolled along a river-bed. 2 Deposition In deposition ...