Use the movie controls to examine each frame and read the caption text.
In what environment did the zoroaster granite form.
The grand canyon tells one of the world s greatest geologic stories.
Thinking of the geologic record as a book is helpful to understand each page of earth s history.
The geology of the grand canyon area includes one of the most complete and studied sequences of rock on earth.
Click the bottom layer of the diagram to see the steps that resulted in the formation of the rocks.
Es2906 vishnu schist and zoroaster granite.
Interactive immersive virtual field trips.
The beginning of the story starts at the bottom of the.
Its distinctive features allow researchers to piece together the history of this unique location one of america s treasures and a unesco world heritage site.
No fossils have been found in this basement rock.
It is placed in the early proterozoic era.
The nearly 40 major sedimentary rock layers exposed in the grand canyon and in the grand canyon national park area range in age from about 200 million to nearly 2 billion years old.
Sedimentary igneous metamorphic bright angel shale if you came to grand canyon area 515 million years ago when the.
Zoroaster granite intruded into the vishnu schist at the base of the grand canyon.
Circle which rock family ies these rocks belong to.
How did the layers of the grand canyon form.
The resulting mountain range is believed to have been 5 6 miles high.
It is in the form of igneous intrusions called plutons and contains iron and magnesium rich materials.
Most were deposited in warm shallow seas and near ancient long gone sea shores in western north america.