# Geography

posted by .

Why is it unlikely to find earthquakes at depths greater then 300km? (something to do with the athenosphere)

According to the principle of isostasy, what will happen to the elevation of a mountain range in the early stages of erosion?

Why are continents unlikely to be destroyed by the process of subduction?

Thanks alot

I think a better subject title for this would be "geology."

Since this is not my area of expertise, I searched Google under the key words "asthenosphere earthquake" to get these possible sources:

http://en.wikipedia.org/wiki/Asthenosphere
http://www.blackwell-synergy.com/doi/abs/10.1111/j.1365-246X.2006.02815.x?journalCode=gji
http://www.earthquakecountry.info/10.5/MajorMovieMisconceptions/
http://www.bartleby.com/65/as/asthenos.html
http://www.globalchange.umich.edu/globalchange1/current/lectures/evolving_earth/evolving_earth.html

Under "isostasy mountain erosion" I found:

http://en.wikipedia.org/wiki/Isostasy
http://findarticles.com/p/articles/mi_m0GDX/is_3_76/ai_75434343
http://gpc.edu/~pgore/geology/geo101/mountain.htm

Under "subduction continents" I found:

http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Continents.shtml
http://en.wikipedia.org/wiki/Plate_tectonics
http://en.wikipedia.org/wiki/Continental_collision
http://www.platetectonics.com/book/page_12.asp

In the future, you can do your own searches using appropriate key words.

I hope this helps. Thanks for asking.

## Similar Questions

1. ### algebra

Q: when graphing the equation y = 4/3x + 2, the y intercept is?
2. ### pre-cal

A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is . From a point 1500 feet closer to the mountain along …
3. ### math

if someone could please help that would be muchly appreciated. A group of mountain climbers are using trigonometry to find the height of a mountain located in the rockies. From point A, which is due west of the mountain, the angle …
4. ### math

angle of elevation of the top of a mountain to a man is 45degree.if we walk along a slope of 30 degree of the mountain 100 meters then the angle of elevation of the top of mountain becomes 60 degree.find the height of the mountain.
5. ### geography

What is the name of the large mountain range in South America?
6. ### trig

A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 24. From a point 1000 feet closer to the mountain …
7. ### Math (trigonometry)

A surveyor wishes to find the height of a mountain. He selects points A and B on level ground along the same line of sight to the mountain. He measures the distance AB to be 1503 m and the angles of elevation of the top of the mountain …
8. ### Trigonometry

Height of a mountain While traveling across flat land, you notice a mountain directly in front of you. The angle of elevation to the peak is 2.5°. After you drive 18 miles closer to the mountain, the angle of elevation is 10°. Approximate …
9. ### Math

Aztec Peak in Arizona is the highest mountain in the Sierra Ancha Mountain Range. If the elevation of Aztec Peak is divisible by 2, is the elevation 7,963 or 7,964 feet?
10. ### Statistics

Please help I don't know how to solve this problem : Trevor is interested in purchasing the local hardware/sporting goods store in the small town of Dove Creek, Montana. After examining accounting records for the past several years, …

More Similar Questions