In What Environment Did The Zoroaster Granite Form

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. Sedimentary igneous metamorphic bright angel shale if you came to grand canyon area 515 million years ago when the. Most were deposited in warm shallow seas and near ancient long gone sea shores in western north america.

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Vishnu Schist And Zoroaster Granite Deborah Green Geologist Writer

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The beginning of the story starts at the bottom of the.

In what environment did the zoroaster granite form.

Interactive immersive virtual field trips. The grand canyon tells one of the world s greatest geologic stories. It is placed in the early proterozoic era. The projected age is 1700 1850 myr.

The resulting mountain range is believed to have been 5 6 miles high. Circle which rock family ies these rocks belong to. No fossils have been found in this basement rock. 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. Zoroaster granite intruded into the vishnu schist at the base of the grand canyon. It is in the form of igneous intrusions called plutons and contains iron and magnesium rich materials. Because of the extreme heat and pressure that folded and changed the rock any fossils in the original rock were destroyed.

How did the layers of the grand canyon form. The geology of the grand canyon area includes one of the most complete and studied sequences of rock on earth. Thinking of the geologic record as a book is helpful to understand each page of earth s history. 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. 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.