Figure 4.

Controlled vocabulary for one facet, Physiographic Features, in action.

Geographical Features → 223 matches

• Benthos → 3 matches
• National Marine Sanctuary → 221 matches
• Archaeological Site → 34 matches
• State Park → 2 matches
• Superfund Site → 1 match

Geological Features → 59 matches

• Accretionary Wedge → 26 matches
• Fault → 221 matches
• Formation → 1 match
• Magma Chamber → 2 matches
• Ophiolite → 3 match
• Plate → 5 matches
• Plate Margin → 2 matches
• Archaeological Site → 34 matches
• Rift → 5 matches
• Rift Zone → 3 match
• Sediment → 18 matches
• Spreading Center → 7 matches
• Subduction Zone → 1 matches
• Spreading Center → 7 matches

Biological Features → 347 matches

• Bench Zones → 7 matches
• Benthos → 92 matches
• Coral Reef → 1 match
• Forest → 3 matches
• Kelp Forest → 9 match
• Marsh → 18 matches
• Peat Bog → 1 matches
• Prairie → 1 matches
• Tundra → 14 matches
• Water Column → 262 match