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Emergency ResponseHome | Image Galleries | Emergency Response

Sediment Types

Photo examples of various sediment types. [Part of the Shoreline Assessment Job Aid.]

Click on an image below to see the full image.
Large brown rocks protruding into surf along shoreline

R. Bedrock Outcrop
(08.25.04, unknown) Bedrock outcrop

 Two people on boulder and sand beach

B. Boulder
(08.25.04, unknown) Boulder (More than 256 millimeters in diameter)

 Closeup of large rocks with scale

C. Cobble
(08.25.04, unknown) Cobble (Between 64 and 256 millimeters in diameter)
Closeup of small flat rocks with scale

P. Pebble
(08.25.04, unknown) Pebble (Between 4 and 64 millimeters in diameter)

 Closeup of tiny rocks with scale

G. Granule
(08.25.04, unknown) Granule (Between 2 and 4 millimeters in diameter)

 Footprints on fine-sand beach

S. Sand
(08.25.04, unknown) Sand (Between 0.06 and 2 millimeters in diameter)
Man crawling in mud

M. Mud
(08.25.04, unknown) Mud (Silt and clay)
Related Pages on Our Site
  • Shoreline Assessment Job Aid A supplement to the Shoreline Assessment Manual, containing visual examples of many of the terms you would use during shoreline assessments after an oil spill.
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