Radiometric dating lab exercise
Carbon is naturally in all living organisms and is replenished in the tissues by eating other organisms or by breathing air that contains carbon.At any particular time all living organisms have approximately the same ratio of carbon 12 to carbon 14 in their tissues.This formation is generally eroded to a smooth slope.Although stratigraphically below the Vishnu Schist in many parts of the canyon, this intrusive igneous rocks is actually younger in age.
Trilobite (an extinct early crab like critter) trails and worm tracks are present.
800' thick reddish and vermilion mudstones and shales interbedded with minor sandstone.
Ripple marks, mud cracks, raindrop impressions are common.
I have only marked the most significant unconformities.
They occur above and below the Zoroaster Granite, at the base of the Temple Butte Limestone, and at the base of the Surprise Canyon Formation. The upper part of the group is non-marine and tracks of quadrupeds are found on bed tops.