EARTH SCIENCE
STRUCTURAL GEOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Foot wall moves down relative to hanging wall.
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The fault line has relatively gentler slope.
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The fault line has relatively steeper slope.
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Hanging wall moves down relative to foot wall.
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Detailed explanation-1: -A thrust fault is a reverse fault with a dip of 45° or less, a very low angle.
Detailed explanation-2: -Thrust faults occur in the foreland basin which occur marginal to orogenic belts. Here, compression does not result in appreciable mountain building, which is mostly accommodated by folding and stacking of thrusts. Instead thrust faults generally cause a thickening of the stratigraphic section.
Detailed explanation-3: -Normal faults occur when two plates, one on top of the other, slide past each other and create the fault. Reverse faults occur when one plate slides under the other, creating a vertical offset. Strike-slip faults happen when two plates move horizontally past each other.
Detailed explanation-4: -There are four types of faulting–normal, reverse, strike-slip, and oblique. A normal fault is one in which the rocks above the fault plane, or hanging wall, move down relative to the rocks below the fault plane, or footwall.