In What Environment Did The Zoroaster Granite Form

Because of the extreme heat and pressure that folded and changed the rock any fossils in the original rock were destroyed.

In what environment did the zoroaster granite form.

Zoroaster granite intruded into the vishnu schist at the base of the grand canyon. 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. Use the movie controls to examine each frame and read the caption text. 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. How did the layers of the grand canyon form. Click the bottom layer of the diagram to see the steps that resulted in the formation of the rocks. Circle which rock family ies these rocks belong to.

During an orogeny a mountain building episode 1 7 billion years ago those rocks were folded faulted and uplifted metamorphosed and intruded by the zoroaster formation predominantly granite also subsequently metamorphosed to form granite gneiss. Sedimentary igneous metamorphic bright angel shale if you came to grand canyon area 515 million years ago when the. The beginning of the story starts at the bottom of the. The projected age is 1700 1850 myr.

It is placed in the early proterozoic era. Thinking of the geologic record as a book is helpful to understand each page of earth s history. Es2906 vishnu schist and zoroaster granite. No fossils have been found in this basement rock.

The grand canyon tells one of the world s greatest geologic stories. 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.