Please need help! Question 2 2. In the accompanying photo (from the Grand Canyon

Question

Please need help!

Question 2

2. In the accompanying photo (from the Grand Canyon) the black rock, which is igneous, forms a:

Volcanic neck

Batholith

Dike

Sill

Question 3

3. Olympus Mons, a 69,000-foot-tall mountain on Mars, is the largest volcano in the solar system. Its circumference at the base is large enough to cover almost the entire state of Colorado. A space probe could safely land at almost any point on the volcano without fear of it toppling over due to a landing on a steep slope. What type of volcano is Olympus Mons?

composite volcano

Cinder cone

Caldera

Shield

Can't tell from just the information provided

Question 4

4. The rocks exposed in Boulder Canyon are almost all igneous. The texture of these igneous rocks is phaneritic or coarse-grained. By recognizing this texture you can tell the following about the geologic history of Boulder Canyon:

An explosive volcanic eruption formed the rocks of Boulder Canyon, meaning that the rocks were likely formed in a caldera

The silica content of the Boulder Canyon rocks is high, meaning that the canyon is composed of continental crust

The rocks of Boulder Canyon lay far beneath the surface when they formed, meaning that a major episode of erosion occurred since then

The rocks of Boulder Canyon must form a dike, because if they formed a sill the texture would be aphanitic (fine-grained) instead

Question 5

The lines shown on the idealized graph above illustrate the cooling histories for the three magmas listed below (the lines illustrate how magma temperature decreased with time). The cooling history for X is best represented by ___, Y's cooling history is best represented by ___, and Z is best represented by ___.

basalt, gabbro, obsidian

obsidian, basalt, gabbro

gabbro, basalt, obsidian

gabbro, obsidian, basalt

Question 6 (10 points)

Examine the map and answer the question that follows. What type of volcano would be most likely to form near location Y?

composite volcano

cinder cone

shield volcano

caldera

Question 7 (10 points)

Using the figure above and knowing that pressure increases with depth, if you move a "dry granite" from a depth at point A to a depth at point B, the granite would be_______?

at a lower pressure and solid

at a higher pressure and solid

at about the same temperature and solid

at a much lower temperature and solid

None of the above

Volcanic neck

Batholith

Dike

Sill

Explanation / Answer

1) volcanic neck and batholith are igneous rock but they formed beneath the earth while dikes can be sedimentary in origin. So the correct answer is option D i.e Sill.

3) Option E is correct can't tell from just the information provided.

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