sedimentary
River Rock
Mixed lithology clast
AI-generated identification · may be incorrectSmooth, rounded shape due to water erosion. Color varies widely based on source rock, often brown, gray, or tan.
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Physical properties
Smooth, rounded shape due to water erosion. Color varies widely based on source rock, often brown, gray, or tan.
Formation & geological history
Formed by weathering and transport in streams or rivers over thousands of years.
Uses & applications
Used in landscaping, decorative ground cover, and natural building materials.
Geological facts
River rocks are not a specific rock type but a description of shape and origin.
Field identification & locations
Found in riverbeds, stream banks, and glacial outwash plains. Easily identifiable by their smooth, rounded appearance.
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