GENERAL GEOLOGY

GEOLOGY

STRATIGRAPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A principle holding that in a vertical sequence of undeformed sedimentary rocks, the relative ages of the rocks can be determined by their position in sequence-oldest at the bottom followed by successively younger layers.
A
Angular Unconformity
B
Law of Superposition
C
Intrusion
D
Law of Lateral Continuity
Explanation: 

Detailed explanation-1: -law of superposition, a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence.

Detailed explanation-2: -The principle of superposition states that in an undeformed sequence of sedimentary rocks, each layer of rock is older than the one above it and younger than the one below it (Figures 1 and 2). Accordingly, the oldest rocks in a sequence are at the bottom and the youngest rocks are at the top.

Detailed explanation-3: -The law of superposition states that in an undeformed sequence of sedimentary rocks, each bed is older than the one above it and younger than the one below it. The principle of original horizontality means that layers of sediment are generally deposited in a horizontal position.

Detailed explanation-4: -The determination of the relative age of a rock is based on the principle of original horizontality of the sediments, principle of superposition, principle of original lateral continuity, principle of cross-cutting relationships, principle of inclusions, principle of biological succession and the lithology of a rock.

Detailed explanation-5: -The principle of superposition states that sedimentary layers are deposited in sequence, and the layers at the bottom are older than those at the top.

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