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Download Plate tectonic settings and mountains
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“Classic” plate tectonic settings and mountain building • Divergent boundary – fault-block mountains (horsts and grabens) Steens Mountain, Oregon “Classic” plate tectonic settings and mountain building • Divergent boundary – fault-block mountains (horsts and grabens) • Collision (convergent) boundary – “fold-andthrust” belts Development of a fold and thrust belt mountain range Note the asymmetry as one part of the fold overrides the other part. The lowangle reverse fault is called a thrust fault. Wyoming foreland – Rockies “Classic” plate tectonic settings and mountain building • Divergent boundary – fault-block mountains (horsts and grabens) • Collision (convergent) boundary – “fold-andthrust” belts • Subduction (convergent) boundary – volcanic arc mountains Cascades volcanic arc “Classic” plate tectonic settings and mountain building • Divergent boundary – fault-block mountains (horsts and grabens) • Collision (convergent) boundary – “fold-andthrust” belts • Subduction (convergent) boundary – volcanic arc mountains • Transform boundaries are not associated with mountain-building Origin of the Transverse Ranges “Transpressional” Origin of the Sierra Nevada Relict subduction zone
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