A **landform region** (or physiographic region) is a **large, contiguous area of the Earth's surface defined by a distinctive assemblage of landforms**—the natural physical features shaped by geologic processes (tectonics, erosion, deposition, volcanism). It is a fundamental unit of physical geography.
| Type | Key Features | Classic Examples |
|---|---|---|
| Mountainous / Orogenic Belts | High relief, steep slopes, folded/faulted rock, glacial sculpturing | Himalayas, Andes, Rockies, Alps, Southern Alps (NZ) |
| Plateaus / Tablelands | High elevation, low internal relief, flat-lying strata, dissected edges | Colorado Plateau, Tibetan Plateau, Deccan Plateau, Kimberley Plateau |
| Plains / Lowlands | Low relief, flat/gentle slopes, thick sediment cover (alluvial, glacial, coastal) | Great Plains (US), North European Plain, Indo-Gangetic Plain, Amazon Basin, West Siberian Plain |
| Hill & Valley / Dissected Uplands | Moderate relief, rolling hills, V-shaped valleys, mature drainage | Appalachian Plateau, Ozarks, Cotswolds, Scottish Borders, Great Dividing Range (lowlands) |
| Coastal Plains & Lowlands | Seaward-sloping, marine/fluvial sediments, estuaries, barriers, deltas | US Gulf/Atlantic Coastal Plain, Netherlands/Belgium, Mekong Delta, Niger Delta |
| Desert / Arid Landforms | Sand seas (ergs), hamadas, regs, playas, alluvial fans, pediments | Sahara (Erg Chech), Arabian Desert (Nefud), Taklamakan, Atacama, Simpson Desert |
| Glacial / Periglacial Landscapes | Fjords, cirques, U-valleys, moraines, drumlins, eskers, thermokarst | Norwegian Fjords, Patagonia, Canadian Shield, Alaska Range, Svalbard |
| Volcanic Landscapes | Stratovolcanoes, shield volcanoes, calderas, lava fields, plateaus | Cascades, Japanese Archipelago, East African Rift, Iceland, Hawaiian Islands, Central Volcanic Zone (Andes) |
| Karst Landscapes | Sinkholes, caves, disappearing streams, towers, pavements (soluble rock) | Guangxi (China), Yucatán, Dinaric Alps (Slovenia/Croatia), Kentucky, Nullarbor |