Mountain belts that are adjacent to active, convergent
plate boundaries are still growing, as evidenced by
active volcanoes, frequent earthquakes, and measurable
changes in elevation. Analyzing the formation of active
mountain belts can help us understand ancient mountain
belts as well.
Geologic features such as folds, faults, and igneous
rocks remain in place long after the period of active
mountain building that formed them has ended. By comparing
geologic structures in ancient mountains with actively
growing mountains, we can deduce details about mountain-building
processes that formed ancient mountains.
! Click each dot to see a photograph of geologic features
associated with each mountain belt. Use the information
to answer the questions below.