Where is the plate boundary located that separates the South American and Africa

Question

Where is the plate boundary located that separates the South American and African plates?

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Question 22.5 pts

What type of plate boundary is this?

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Question 32.5 pts

Where do the earthquakes in the Atlantic Ocean occur?

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Question 42.5 pts

Are these earthquakes relatively shallow or deep?

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Question 52.5 pts

What is the approximate age of the crust at the plate boundary at the Mid Atlantic Ridge?

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Question 62.5 pts

Describe how the sea floor age changes as you go from the Mid Atlantic Ridge towards the east coast of South America.

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Question 72.5 pts

Describe the relationship between sea floor age, bathymetry, and the mid-Atlantic boundary.

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Question 82.5 pts

Is crust being created or destroyed at this plate boundary in the Atlantic Ocean?

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Question 92.5 pts

Compare the distribution and depths of earthquakes shown for the mid-Atlantic plate boundary (see questions 3 & 4) and the Tonga-Kermadec boundary shown

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Question 102.5 pts

Describe the distribution of earthquakes at the Tonga-Kermadec plate boundary

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Question 112.5 pts

What is the explanation for earthquakes at these locations and depths at the Tonga plate boundary?

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Question 122.5 pts

Note where the shallowest earthquakes are located along the Tonga plate boundary. What is this feature called?

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Question 132.5 pts

Approximately what is the depth of earthquakes that are spatially related to the active volcanoes along the Tonga plate boundary?

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Question 142.5 pts

Is the relationship between earthquake depth and active volcanoes similar here?

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Question 152.5 pts

How about in Central America (Guatemala, El Salvador, Nicaragua, etc.)?

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Question 162.5 pts

What is the dominant type of plate boundary along the Ring of Fire?

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Question 172.5 pts

Is crust being created or destroyed at this plate boundary?

Explanation / Answer

1. The plate boundry that separates south Ameican and African plates is the Mid Atlantic ridge in the mid Atlantic Ocean.

Question 22 The mid Atlantic ridge is a divergent plate boundry

Question 32 The earthquakes occur in the Atlantic Ocean on the mid Atlantic Ridge.

Question 42. The Earthquakes that occur on the mid atlantic ridge are shallow earthquakes.

Question 52. The approximate age of the crust at the plate boundry at the mid atlantic ridge is 0 Ma.

Question 62 The sea floor gets older from the mid atlantic ridge to east coast of south america

Question 72. Mid-Atlantic ridge boundry is the shallowest part of the ocean and has the youngest seafloor age.

Question 82. crust is being created at the mid atlantic ridge.

Question 92. Mid Atlantic plate boundry earthquakes are shallower than Tonga-Kermadec plate boundry earthquakes

Question 102 Earthquakes get deeper to the west

Question 112. Earthquakes occur at the locations/depths because the Pacific plate subducts beneath the Australian plate

Question 132. ~ 100 km

Question 142. yes

Question 162. Convergent

Question 172. Destroyed

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