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Its from the water level. The water use to be as high as the lines but due to drought it caused the water to sink but they eroded(left the lines) into the walls before the water reached were it is now. Better answer.
The horizontal lines are layers of sedimentary rock laid down at different geological times. Vertical lines are from wind and water erosion.
What else can I help you with?
Why is it important to study the walls of the grand canyon?
to find how old they are and how many layers
How far apart are the walls of the Grand Canyon?
They vary from 4 to 18 miles.
Is it illegal to bungee jump off the Grand Canyon?
i am pretty shure it is from the skywalk in the middle of the canyon, definite yes, but there are small canyons that are part of the Grand Canyon system such as Marble Canyon where you can jump from the Navajo Bridge -- not part of the main canyon that most people think of as the Grand Canyon but it's about a 200 foot drop between narrow canyon walls and that may suffice.
Would the contour lines of the grand canyon be spaced out or close together?
The contour lines of the Grand Canyon would likely be spaced closer together due to its steep and rugged terrain. The closer spacing of contour lines indicates a quicker change in elevation, reflecting the dramatic topography of the canyon.
How much time can be read in the walls of the Colorado River's Grand Canyon?
About 200 million years.
What is the name of Grand Canyon?
the grand canyon
Is grand canyon a canyon?
a Grand Canyon is nothing but a big erosion.........
What large canyon is in Arizona?
Copper Canyon (Spanish: Cañon del Cobre) is such landmark.
What Is a deep valley with a high steep sides?
It is a Canyon as in the Grand Canyon.
What is the largest canyon formed by the Colorado river?
Black canyon
What is a good catch phrase for the grand canyon?
The grand canyon is grand
What was the process of erosion for the grand canyon?
The Grand Canyon was formed through a process of erosion by the Colorado River over millions of years. The river gradually cut through layers of rock to create the steep walls of the canyon. Additionally, factors such as weathering, rockfalls, and the force of gravity also contributed to the erosion of the canyon.
