GEOLOGY

EARTH SCIENCE

EARTHQUAKES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
what is a monocline fold
A
a bend in rock layers that are not horizontal
B
a fold that arches upwards
C
a fold that bends downwards
D
None of the above
Explanation: 

Detailed explanation-1: -A monocline is a simple bend in the rock layers so that they are no longer horizontal. Anticlines are folded rocks that arch upward and dip away from the center of the fold. The oldest rocks are at the center of an anticline and the youngest are draped over them.

Detailed explanation-2: -A monocline (or, rarely, a monoform) is a step-like fold in rock strata consisting of a zone of steeper dip within an otherwise horizontal or gently-dipping sequence.

Detailed explanation-3: -An excellent example of a Colorado Plateau monocline is the Waterpocket fold in Capitol Reef National Park. Most monoclines are classified as drape folds or forced folds because the sedimentary rocks are draped or forced as a result of movement along the underlying faults.

Detailed explanation-4: -A monocline is a special type of fold in which both limbs are parallel but offset to each other. The limbs are horizontal, or nearly so.

Detailed explanation-5: -A monocline is a simple “one step“ bend in the rock layers (Figure below). In a monocline, the oldest rocks are at the bottom, and the youngest are at the top. The rock layers in the center left are tilted in one direction, forming a monocline.

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