Depth (km) 200 Key Shallow Intermediate Deep 400 Tonga Islands Trench 0 0 0 80 8000 Earthquake foci Tonga Islands 600 600 400 200 Distance (km) ▲ Figure 3.8 Distribution of earthquake foci in the vicinity of the Tonga islands.

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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  1. On Figure 3.8, outline the zone of earthquakes.
  2. Draw a line in Figure 3.8 at the depth of 100 kilometers to indicate the top of the asthenosphere - the zone of partly melted and weak Earth material. Label the line top of the asthenosphere.
Depth (km)
200
Key
Shallow
Intermediate
Deep
400
Tonga
Islands
Trench
0 0 0 80 8000
Earthquake foci
Tonga Islands
600
600
400
200
Distance (km)
▲ Figure 3.8 Distribution of earthquake foci in the vicinity of
the Tonga islands.
Transcribed Image Text:Depth (km) 200 Key Shallow Intermediate Deep 400 Tonga Islands Trench 0 0 0 80 8000 Earthquake foci Tonga Islands 600 600 400 200 Distance (km) ▲ Figure 3.8 Distribution of earthquake foci in the vicinity of the Tonga islands.
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