Question

Describe how these were formed .
1. San Andreas
2. Marina trench
3. The Himalaya mountains​

Answer 1

Answer:

1. San Andreas

2. Marina tench

3. The Himalaya mountains

Explanation:

1. 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.

2. The Mariana Trench was formed through a process called subduction. Earth's crust is made up of comparably thin plates that “float” on the molten rock of the planet's mantle. ... When two plates crash into each other, an oceanic plate plunges downward into the mantle, while the other plate rides up over the top.

3. 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.

Answer 2

Answer:

1. San Andreas

2. Marina tench

3. The Himalaya mountains

Explanation:

1. 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.

2. The Mariana Trench was formed through a process called subduction. Earth's crust is made up of comparably thin plates that “float” on the molten rock of the planet's mantle. ... When two plates crash into each other, an oceanic plate plunges downward into the mantle, while the other plate rides up over the top.

3. 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.