What is seismic zone extending at an angle of about 45 degrees from the base of

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What is seismic zone extending at an angle of about 45 degrees from the base of an ocean trench, down through lithosphere to the asthenosphere known as
Options
A. Appleton layer
B. Benioff zone
C. Conard discontinuity
D. Convergence zone

Correct Answer

Benioff zone

World Geography problems

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1. The Earthquake at Sagami bay in Japan which killed two and half lakh people was an example of
Options
A. Tectonic earthquake
B. Plutonic earthquake
C. Main induced evarthquake
D. Isostatic earthquake

2. The Vocanic eruption is most likely to be violent when
Options
A. The volcano is near to the sea
B. The neck of the volcano is sealed by a plug
C. The lava is viscous
D. The lava reaches the surface through a fissure

3. Tarsands containing large molecular hydrocarbons like crude oil are found in limited quantities in several parts of the world but the most important known occurrence is in:
Options
A. U.S.A
B. Canada
C. Australia
D. Russia

4. Though the countries of South - West Asia have abundant power resources, they have not developed major industries mainly because
Options
A. They do not have raw materials
B. They do not have a large market
C. They do not have skilled labour
D. They do not have capital

5. Soils, which have undergone gleying and are associated with marshes , swamps or poorly drained upland are called ____
Options
A. calcimorphous soils
B. hydromorphic soils
C. halomorphic soils
D. sierozems

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