Cobble
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Tennis ball size rocks or bigger (can be flat).
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Coarse Gravel
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Marble size to near tennis ball size (can be flat).
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Fine Gravel
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2mm to marble size.
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Coarse Sand
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Texture mostly larger grained sand particles.
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Fine Sand
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Texture mostly smaller grained sand with some fine.
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Silt/Clay
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Fine particles (texture smooth).
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Shell Hash
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Mostly shell hash (50% or greater).
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Mixed
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Any combination of above – requires comment.
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NR
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Not Recorded
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