Comprehensive list of the major landforms formed at plate boundaries, along with examples. This is ideal for CSIR-NET, GATE, UPSC, and MSc Geology revision.
1. Convergent Pl
ate Boundary (Destructive Boundary)
When two plates move towards each other.
A. Oceanic – Continental Convergence
Landforms
- Ocean trench
- Continental volcanic arc
- Fold mountains
- Accretionary wedge (prism)
- Forearc basin
- Back-arc basin (sometimes)
Examples
- Peru–Chile Trench
- Andes Mountains
- Cascade Range (USA)
- Central American Volcanic Arc
B. Oceanic – Oceanic Convergence
Landforms
- Deep ocean trench
- Volcanic island arc
- Forearc basin
- Back-arc basin
- Seamounts (locally)
Examples
- Mariana Trench
- Mariana Islands
- Tonga Trench
- Aleutian Islands
- Japan Island Arc
C. Continental – Continental Convergence
Landforms
- Fold mountains
- High plateaus
- Thrust faults
- Nappe structures
- Intermontane basins
Examples
- Himalayas
- Tibetan Plateau
- Alps
- Zagros Mountains
- Caucasus Mountains
2. Divergent Plate Boundary (Constructive Boundary)
When two plates move away from each other.
A. Oceanic Divergence
Landforms
- Mid-ocean ridge
- Central rift valley
- Fissure volcanoes
- Hydrothermal vents (Black smokers)
- Abyssal hills
- New oceanic crust
Examples
- Mid-Atlantic Ridge
- East Pacific Rise
- Iceland
- Juan de Fuca Ridge
B. Continental Divergence
Landforms
- Rift valley (Graben)
- Horsts
- Fault scarps
- Rift lakes
- Shield volcanoes
- Linear valleys
- Eventually a new ocean basin
Examples
- East African Rift Valley
- Red Sea
- Baikal Rift
- Rhine Rift Valley
3. Transform Plate Boundary (Conservative Boundary)
When plates slide past one another.
Landforms
- Transform faults
- Strike-slip faults
- Linear valleys
- Offset streams
- Fault scarps
- Sag ponds
- Pull-apart basins
- Pressure ridges
- Fault valleys
Examples
- San Andreas Fault (USA)
- North Anatolian Fault (Turkey)
- Alpine Fault (New Zealand)
- Dead Sea Transform
- Queen Charlotte Fault (Canada)
Quick Revision Table
| Plate Boundary | Major Landforms | Best Examples |
|---|---|---|
| Oceanic–Continental Convergent | Ocean trench, volcanic arc, fold mountains, accretionary prism | Andes, Peru–Chile Trench |
| Oceanic–Oceanic Convergent | Trench, island arc, back-arc basin | Mariana, Tonga, Japan |
| Continental–Continental Convergent | Fold mountains, plateau, thrust faults, nappes | Himalaya, Alps, Tibet |
| Oceanic Divergent | Mid-ocean ridge, rift valley, hydrothermal vents | Mid-Atlantic Ridge, Iceland |
| Continental Divergent | Rift valley, horst, graben, rift lakes | East African Rift, Red Sea |
| Transform Boundary | Strike-slip fault, linear valley, offset streams, sag pond, pressure ridge | San Andreas, North Anatolian |
High-yield landforms to remember
- Convergent: Ocean trench, volcanic arc, island arc, fold mountains, plateau, accretionary prism.
- Divergent: Mid-ocean ridge, rift valley, horst, graben, hydrothermal vents, rift lakes.
- Transform: Strike-slip fault, transform fault, linear valley, offset stream, sag pond, pull-apart basin, pressure ridge.
These are the most frequently asked tectonic landforms in CSIR-NET Earth Sciences, GATE Geology, and MSc examinations.
Tags:
Geomorphology
