The Appalachian Mountains are formed by what type of mountain-building process?

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Study for the Earth Science Standards of Learning Test. Use flashcards and multiple choice questions, with hints and explanations for each question. Prepare for your exam efficiently!

Multiple Choice

The Appalachian Mountains are formed by what type of mountain-building process?

Explanation:
Folding from compressional forces during continental collision formed the Appalachian Mountains. Thick layers of sedimentary rock were squeezed and buckled, creating folds known as anticlines and synclines that build a long, continuous mountain belt. Over millions of years, erosion wore the peaks down, leaving the rounded ridges we see today. This is different from volcanic mountains, which form from magma reaching the surface; from block faulting, which creates stepped blocks due to horizontal crustal movement; and from erosion plains, which are flat areas produced by extensive weathering and leveling.

Folding from compressional forces during continental collision formed the Appalachian Mountains. Thick layers of sedimentary rock were squeezed and buckled, creating folds known as anticlines and synclines that build a long, continuous mountain belt. Over millions of years, erosion wore the peaks down, leaving the rounded ridges we see today. This is different from volcanic mountains, which form from magma reaching the surface; from block faulting, which creates stepped blocks due to horizontal crustal movement; and from erosion plains, which are flat areas produced by extensive weathering and leveling.

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