sedimentary
Unidentified small rocks or gravel
AI-generated identification · may be incorrectSmall size, varied shapes (some rounded, some angular), dull luster, grayish-brown color.
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Physical properties
Small size, varied shapes (some rounded, some angular), dull luster, grayish-brown color.
Formation & geological history
Likely weathered fragments from larger rock formations, transported and deposited by water, wind, or ice.
Uses & applications
Commonly used in construction as aggregate, landscaping, or driveways.
Geological facts
Gravel is a loose aggregation of rock fragments. It is classified by particle size range and includes size classes from granule- to boulder-sized fragments.
Field identification & locations
Found almost everywhere on the Earth's surface where erosion has occurred. Identifying the exact type of rock requires closer inspection of individual pieces.
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Fossiliferous Sedimentary Rock
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Sandstone or Siltstone
Arenite (if sandstone)
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Shale
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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