suspended material - telephotometry log
- swivel
- swivel chute
- swivel clamp
- swivel draw bar
- swivel head
- swivel hitching
- swivel hook
- swivel wrench
- swiveling chute
- swollen
- swordfish
- SY ice
- sycon
- syenide
- syenite
- syenite-aplite
- syenite-diorite
- syenite-pegmatite
- syenodiorite
- syenogabbro
- syenoid
- sylvan
- sylvanite
- sylvester
- Sylvester chain
- sylvinite
- sylvite
- symbiosis
- symbol
- symmetric anomaly
- symmetric four-electrode array
- symmetric four-electrode configuration
- symmetric four-electrode system
- symmetric offset spread
- symmetrical anticline
- symmetrical arching
- symmetrical banding
- symmetrical explosion
- symmetrical fold
- symmetrical plane