Retracing history of Earth at Grand Canyon
Nature requires 1.7 billion years to form the Grand Canyon located in Northern Arizona, United States. Formation process through various critical periods of the earth. Climate change, arising sinking continents, forming mountains, and others. Any period of change, contributing one layer at the Grand Canyon. By researching layer by layer the Grand Canyon, we can see what is happening on our planet during 1.7 billion years.
Two Plate collision
Factor of the early occurrence of the Grand Canyon is a collision of two plates. When the Pacific Plate and North American continental plates collide, creating a series of ancient mountain huge and high. Over time, these ancient mountains and then eroded.
Earth's erratic climate erodes the existence of these mountains. When the sea rises, the mountains sink into the seabed. When the sea receded the mountains appeared again. Drowned mountains arise is marked trail of layers in the Grand Canyon.
When these mountains sink, sea sand cover, and sea animals living on it. When the mountains are lifted again to the surface, deposition of sand is still there, as well as marine animals on it. This is evidenced from the discovery of many sedimentary rocks (sediments) in the Grand Canyon. As is known, the stone can only be formed deposits on the seafloor or shallow water. As for marine animals can be encountered in the top layer of the Grand Canyon in the form of fossils. We can find fossils of sea creatures such as brachiopods, corals, mollusks, sea lilies, sea worms or there.
Scraping the Colorado River
Another factor that has contributed greatly to form the Grand Canyon is the Colorado River. When the Colorado Plateau rose as high as three miles from the sea surface due to the activity of the Earth's plates, the river is immediately cut off the Colorado Plateau, through the Grand Canyon. So, when the land around the river rose to the top, this would split the Colorado river deeper. This river is eroding the walls of the Grand Canyon. eroded cliffs. This erodes the ability of the river is amazing. Every day, the Colorado River ran half a million tonnes of piling into the Pacific Ocean.
Most Popular
Actually, the world's deepest abyss is not the Grand Canyon is 'just' depth of 1600 meters. There are some other very deep abyss. Like, the Colca Canyon (3200 m) and Cotahuasi Canyon (3535 m), both in Peru. However, what makes the Grand Canyon is famous for the uniqueness of its structure, colorful landscapes and earth history contained in them. That is why, why did the Grand Canyon which has a length of 446 km and width of 6-29 km, the millions of tourists visit every year. Making the Grand Canyon as one of the most famous tourist attraction in the world. That said, the number of tourists visiting the Grand Canyon each year over 5 million people. Wow! yes really incredible.
Retracing history of Earth at Grand Canyon
Reviewed by Adex
on
00.42
Rating:
Tidak ada komentar: