Numerous Terranes Exist in Alaska

question 29

Multiple Choice

Numerous terranes exist in Alaska. One of these is the Wrangellia terrane. Why is the Wrangellia terrane considered part of the same terrane as that from pieces scattered from western Idaho northward to Alaska?

• A) The terranes have similar ages and sequences of rocks.
• B) The terranes are joined by a single fault line.
• C) The terranes are of distinctly different rock types from each other.
• D) The terranes were formed during increasingly older times as they progress northwest.

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Definitions:

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A measure of the acidity or alkalinity of blood, normally maintained within a narrow range around a neutral pH of 7.4.

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Sensory receptors in the body that respond to mechanical pressure or distortion, playing an essential role in the senses of touch and hearing.

Mechanoreceptors

Sensory receptors that respond to mechanical pressure or distortion, playing a key role in the sense of touch and hearing.

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A change in the DNA sequence that can lead to different genetic traits, potentially causing various diseases or conditions.