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Difficulty: MediumEarth's Interior and Plate Tectonics

Tectonic plate interactions create distinct geological structures depending on the crustal composition involved and the relative motion between plates. Match each tectonic boundary type on the left with its characteristic geological feature on the right.

  • Continental-continental convergent boundaryHigh folded mountain range formed without significant subduction volcanism
  • Oceanic-oceanic divergent boundaryContinuous mid-ocean ridge system where new oceanic lithosphere forms
  • Oceanic-continental convergent boundaryDeep ocean trench bordering an active continental volcanic mountain arc
  • Transform plate boundaryLinear strike-slip fault zone where lithosphere is neither created nor consumed

Answer

Continental-continental convergence matches with high folded mountain ranges without subduction volcanism; Oceanic-oceanic divergence matches with continuous mid-ocean ridge systems forming new lithosphere; Oceanic-continental convergence matches with deep ocean trenches bordering continental volcanic arcs; Transform boundaries match with linear strike-slip fault zones where lithosphere is neither created nor consumed.
Each boundary type produces distinct landforms based on relative motion (convergent, divergent, or transform) and density contrasts between the participating lithospheric plates.

Step-by-Step Solution

1
Identify the motion and crust types for continental-continental convergence.
Two low-density continental crusts collide, preventing subduction and producing folded mountain belts without extensive volcanic arcs.
Continental lithosphere is too buoyant to sink into the denser mantle.
2
Identify the motion and crust types for oceanic-oceanic divergence.
Plates separate under tension, allowing magma upwelling to construct mid-ocean ridges.
Seafloor spreading continuously generates new basaltic oceanic crust along divergent plate margins.
3
Identify the motion and crust types for oceanic-continental convergence.
The denser oceanic plate subducts beneath the lighter continental plate, creating a trench and a volcanic mountain arc.
Flux melting above the descending oceanic slab fuels continental arc magmatism.
4
Identify the motion for transform boundaries.
Plates slide horizontally past one another along strike-slip faults with no crust creation or consumption.
Lateral shearing motion produces conservative plate margins.

Key Concept

Plate Boundary Dynamics and Associated Geologic Features
Estimated Time:1m 0s
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Topics

Earth's Interior and Plate Tectonics

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