That the mountainous mass of western Maui is much older is shown by the destruction of its crater, by its sharp ridges and by deeply eroded gorges or valleys.
Quarter of the state, and are separated from a lower, greatly eroded highland region on their N.
At some period, long subsequent to its original excavation, and after many large stalactites had grown, it was completely filled with glacial mud charged with acid, whereby the dripstone was eroded into singularly grotesque shapes.
Corner of Arizona is a region of greatly eroded ranges and gentle aggraded valleys.
The " bluffs " (remnants of an eroded plain formed of alluvion deposits over an old, mature and drowned topography) run through the second tier of parishes W.