In What Environment Did The Zoroaster Granite Form

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In what environment did the zoroaster granite form. The grand canyon tells one of the world s greatest geologic stories. The beginning of the story starts at the bottom of the. 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.

Interactive immersive virtual field trips. Thinking of the geologic record as a book is helpful to understand each page of earth s history. Most were deposited in warm shallow seas and near ancient long gone sea shores in western north america. 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.

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. It is placed in the early proterozoic era. The projected age is 1700 1850 myr.

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. The geology of the grand canyon area includes one of the most complete and studied sequences of rock on earth. 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.

How did the layers of the grand canyon form. Es2906 vishnu schist and zoroaster granite.