Sedimentary rocks are those which
result from deposition of minerals in prehistoric times by water or wind. They are
familiar to many people as sandstone, shale, or limestone, for
Much of Arizona's great scenery results from sedimentary rock
formations. Great deserts during the Triassic Period, for example, have left us
towering cliffs and mesas in the northern part of the state -- the lines of the ancient
dunes are still visible on rock faces.
Roosevelt Dam in the Salt River Canyon east of Phoenix is constructed from
blocks of limestone, which was deposited in a vast ocean during Precambrian time.
There are many illustrations (for example) of these kinds of rocks visible on the
- the Red Rocks of Sedona
- the west end of Camelback Mountain
- the sandstone & conglomerate at Papago Park
If this window appears as a full-size,
rather empty looking web page, either you do not have scripting and "pop-ups"
enabled in your web browser, or you have found it only by way of a search function.
In the former case, you can return to the main website by using your
"Back" button, or by accessing our Home Page at www.gemland.com.
In the latter case, you will have to access our website's Home Page by going
If this window appears as a
"pop-up", simply close
this window to return to where you were.