Abrasion discovery erosion field work geological structures geological time scale geology James Hutton rocks sedimentary rock sedimentary structure sediments stratigraphy stress structure unconformity Siccar Point - the world's most important geological site and the birthplace of modern geology By Rita R. McKenna Post a comment Siccar Point is world-famous as the most important unconformity described by James Hutton (1726-1797) in support of hi…
Cajon California careers in Geology geological structures geology geology books geophysics glossary plate tectonics model sedimentary structure Glossary of Selected Geologic Terms By Rita R. McKenna Post a comment a'a —a lava rock with a ropey, frothy surface texture formed as a cooling crust on a fluid lava flow. ablation —the…