| DEPOSITIONAL LANDFORMS built up by movement of material, usually sediment. |
| Alluvial FanWhere sediment spills from hills into piles on plains. |
| BajadaApron of debris built of many alluvial fans. |
| BarSediment piled across the mouth of a river or bay. |
| Barrier IslandLong sandy bar that guards the coast. |
| BeachSandy shore between land and sea. |
| DeltaWhere sediment fills the mouth of a river. |
| DunePile of fine sand built by the wind. |
| FloodplainWide muddy flats flanking a river. |
| LandslideSediment deposit created by mass movement. |
| Lava FlowBuilding block of volcanoes. |
| LeveeNatural berm along a river, rarely seen today. |
| Mud VolcanoEdifice built by eruptions of gas-charged sediment. |
| PlayaDry lake bed, typically dusty or salty. |
| SpitBar or barrier island growing offshore into open water. |
| TerraceAncient bench built into a vanished lake. |
| TomboloSand bar joining two pieces of land. |
| Tufa TowerLimy growth exposed as a mineral lake subsides. |
| VolcanoMountain that grows from the inside up. |
| Special Galleries: Landslides, Tombolos, Mud Volcanoes |
| EROSIONAL LANDFORMS carved by the forces of erosion. |
| ArchShort-lived natural bridges of stone. |
| ArroyoFlat-floored streambed typical of deserts. |
| BadlandsMazelike area of strong stream dissection. |
| ButteNarrow table mountain or abruptly rising stone hill. |
| CanyonLarge, steep-walled rocky valley. |
| ChimneyColumn of rock standing in the water off a beach. |
| CliffPrecipitous rock face of various heights. |
| CirqueMountainside bowl shaped by a glacier. |
| CuestaRidge of hard rock beds that slope gently. |
| GorgeHigh-walled rocky valley cut by vigorous waters. |
| GulchSteep and narrow ravine eroded by flash floods. |
| GullySmall channel cut into soft material. |
| Hanging ValleyStream bed that ends in a waterfall. |
| HogbackRidge of hard rock beds that slope steeply. |
| HoodooTall rock column carved by desert erosion. |
| Hoodoo RockBizarre rock shape carved by desert erosion. |
| InselbergRemnant rock knob typical of deserts. |
| MesaTable mountain, steep-sided and flat-topped. |
| MonadnockMountainous remnant of widespread regional erosion. |
| MountainLarge, rocky hill with a peak. |
| RavineNarrow, rocky valley carved by water. |
| Sea ArchArch cut by ocean waves. |
| SinkholeCollapsed ground where underlying rock has been removed. |
| TorRounded rocky knob unearthed from an underground origin. |
| ValleyIn general, low ground with high ground around it. |
| Volcanic NeckSolid lava core of a former volcano. |
| Wash or WadiStreambed that is usually either dry or flooded. |
| Water GapRiver valley that cuts through a rock ridge. |
| Wave-Cut PlatformRock surface cut flat by long exposure to surf. |
| YardangSediment shape carved by fierce desert winds. |
| Special Gallery: Wave-Cut Platforms |
| TECTONIC LANDFORMS made by movements of Earth's crust. |
| EscarpmentLarge cliff usually made by faulting. |
| Fault ScarpShort-lived sign of earthquake displacement. |
| Pressure RidgeWhen push comes to shove, rock rises. |
| Rift ValleyFormed by splitting lithospheric plates. |
| Sag BasinWhen pull comes to tug, rock falls. |
| Shutter RidgeHigh ground pulled sideways across a stream. |
| Stream OffsetDisruption of a waterway by repeated fault motion. |
| Special Galleries: San Andreas fault, Subduction-Related Rocks |

