Question

D. Answer the following questions in detail.
1. Describe how these were formed.
a. San Andreas b. Marina Trench
c. The Himalaya mountains

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Answer 1

Explanation:

The San Andreas Fault was born about 30 million years ago in California, when the Pacific Plate and the North America plate first met. ... The new configuration meant the two plates slid past one another instead of crashing into each other, a boundary called a strike-slip fault

Answer 2

Answer:

a. The San Andreas Fault was born about 30 million years ago in California, when the Pacific Plate and the North America plate first met. Before then, another oceanic plate, the Farallon plate, was disappearing beneath North America at a subduction zone, another type of plate boundary.

b.The Mariana Trench is part of a global network of deep troughs that cut across the ocean floor. They form when two tectonic plates collide. At the collision point, one of the plates dives beneath the other into the Earth's mantle, creating an ocean trench.

c. The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today. ... From about 50-40 Ma the rate of northward drift of the Indian continental plate slowed to around 4-6 cm per year.