I recently led a group of amateur archaeologists into Monument Valley. This landscape icon never fails to impress. It truly is an awesome place.
Ancestral Rocky Mountains in Colorado (follow it northeast and the clasts get larger). It is time-equivalent to the Hermit Shale in Grand Canyon. Next, forming the massive walls of the buttes in Monument Valley is the De Chelly Sandstone, an eolian deposit left in a giant sand sea or erg. It was, of course, first described in Canyon De Chelly to the southeast of here. Both of these deposits are Permian in age. Cryptically exposed on the tops of the buttes are two thin remnants of Triassic age deposits, the Moenkopi Formation and the Shinarump Conglomerate Member of the Chinle Formation. They are both fluvial (river) deposits, with the Shinarump being coarser-grained. Some uranium exploration was completed within the Shinarump during the Cold War on top of some buttes in Monument Valley (not shown). Not exposed but making up the floor of the valley is the Cedar Mesa Sandstone. Once these monuments have eroded away, incision into the Cedar Mesa Sandstone/Halgaito Shale couplet below may renew the process again and perhaps forming a Monument Valley II. (Or perhaps Monument Valley III if the process also happened previous to this one, in layers now completely gone today). Wow!
conchoidal fractures that are scalloped-shaped upon the walls of the cliff.
kokopelli's or flute players.