Thinking of the geologic record as a book is helpful to understand each page of earth s history.
Composition of zoroaster granite.
Click the bottom layer of the diagram to see the steps that resulted in the formation of the rocks.
The beginning of the story starts at the bottom of the.
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.
Adapted from national park service.
Bright angel shale if you came to grand canyon area 515 million years ago when the bright angel shale was forming everything was.
The inner canyon has smaller beaches and is formed from igneous rocks such as vishnu schist and zoroaster granite.
Circle which rock family ies these rocks belong to.
The grand canyon tells one of the world s greatest geologic stories.
Sedimentary igneous metamorphic bright angel shale if you came to grand canyon area 515 million years ago when the.
Learn more about the properties and uses of granite in this article.
Because of the extreme heat and pressure that folded and changed the metamorphic rock it is hard to find any fossils in the basement rocks.
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.
Most were deposited in warm shallow seas and near ancient long gone sea shores in western north america.
The resulting mountain range is believed to have been 5 6 miles high.
Granite coarse or medium grained intrusive igneous rock that is rich in quartz and feldspar.
Zoroaster thus shares an exalted station with abraham moses krishna jesus muhammad the báb and the founder of the bahá í faith bahá u lláh.
It is the most common plutonic rock of the earth s crust forming by the cooling of magma silicate melt at depth.
Move your cursor over the photograph to highlight the vishnu schist and the 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.
Vishnu schist and zoroaster granite.
