slow erosion
- weatheringAtmospheric breakdown of materials
- gradualDeveloping slowly over time
- decayGradual organic breakdown
- wearingHaving clothing on
- attritionGradual reduction through loss
corrosion · crumbling · degradation · sediment · rust · fading · patience · time · cliff · coastline · river · canyon · limestone · sandstone · grinding · relentless · imperceptible · dissolving
rate of change
slow erosionflash flood
Rapid overflow from storms
earthquake · volcanic eruption · landslide · implosion · meteor strike