GEOLOGY
STRATIGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A tactic used by geologists to determine the relative age of a rock/rock layer compared to another.
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Process that involves the cutting of landform in a cross shape.
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Principle of geology that determines that the geologic feature that another is the youngest of the two.
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Law created by Nicolas Steno
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Detailed explanation-1: -It was first developed by Danish geological pioneer Nicholas Steno in Dissertationis prodromus (1669) and later formulated by James Hutton in Theory of the Earth (1795) and embellished upon by Charles Lyell in Principles of Geology (1830).
Detailed explanation-2: -This is now referred to as Steno’s law of superposition: layers of rock are arranged in a time sequence, with the oldest on the bottom and the youngest on the top, unless later processes disturb this arrangement. It is Steno’s most famous contribution to geology.
Detailed explanation-3: -From his work in the mountains of western Italy, Steno realized that the principle of superposition in stratified (layered) rocks was the key to linking time to rocks. In short, each layer of sedimentary rock (also called a “bed”) is older than the one above it and younger than the one below it.
Detailed explanation-4: -Steno’s laws of stratigraphy describe the patterns in which rock layers are deposited. The four laws are the law of superposition, law of original horizontality, law of cross-cutting relationships, and law of lateral continuity.