All Else Being Equal, in a Horizontal Sequence of Sedimentary

question 27

Short Answer

All else being equal, in a horizontal sequence of sedimentary rock layers, each higher bed is younger than the bed below it. This idea is the principle of ________.

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Definitions:

Deductive Reasoning

A process of logical reasoning from one or more statements (premises) to reach a logically certain conclusion.

Modus Ponens

A logical argument form and a rule of inference that, if a premise implies a conclusion and the premise is true, then the conclusion must also be true.

Modus Tollens

A logical argument form that suggests if a implies b, and b is found to be false, then a must also be false.

Antecedent

An event, condition, or cause that logically or temporally precedes another; in grammar, the noun or noun phrase that a pronoun refers to.