Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
und  |
|---|
| Unda Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Chita Russian Federation | |
| ...Unda Russian Federation | |
| SN | Village in S Chita Oblast in Transbaikalia. Before 1993, Unda Russian Republic was also used. This term has multiple hierarchies. |
| undation | |
|---|---|
| RT | crust |
| crustal thickening | |
| tectonics | |
| underclay | |
|---|---|
| UF | coal clay |
| root clay | |
| seat clay | |
| seat earth | |
| underearth | |
| RT | clay |
| fireclay | |
| coal seams | |
| underearth | |
|---|---|
| USE | underclay |
| underground | |
|---|---|
| SN | A valid term through 1977. After 1977, use underground space. |
| underground cavities | |
|---|---|
| RT | caverns |
| caves | |
| solution cavities | |
| geomorphology | |
| underground space | |
| volcanic features | |
| SN | Use solution cavities if applicable. Also see underground space for engineering geology. Added to Thesaurus in 1993. |
| underground channels | |
|---|---|
| RT | channels |
| drainage | |
| infiltration galleries | |
| irrigation | |
| ground water | |
| underground installations | |
| waterways | |
| SN | Added to Thesaurus in 1981. |
| underground disposal | |
|---|---|
| UF | underground waste disposal |
| RT | waste disposal |
| radioactive waste | |
| waste disposal sites | |
| waste management | |
| underground installations | |
| landfills | |
| far-field | |
| near-field | |
| underground storage | |
| underground storage tanks | |
| SN | Added to Thesaurus in 1985. |
| underground installations | |
|---|---|
| UF | installations, underground |
| RT | mines |
| land subsidence | |
| seismic response | |
| rock mechanics | |
| permafrost | |
| geologic hazards | |
| seepage | |
| design | |
| construction | |
| feasibility studies | |
| foundations | |
| excavations | |
| pipelines | |
| leaking underground storage tanks | |
| far-field | |
| near-field | |
| gas storage | |
| oil storage | |
| site explora | |
| SN | Used for geological studies on underground cavities (natural or otherwise), excluding tunnels. |
| underground mines | |
|---|---|
| USE | underground mining |
| underground mining | |
|---|---|
| BT | mining |
| .underground mining | |
| UF | subsurface mining |
| underground mines | |
| RT | mines |
| mining geology | |
| cut-and-fill mining | |
| longwall mining | |
| underground installations | |
| roof control | |
| SN | Added to Thesaurus in 1982. |
| Underground Research Laboratory | |
|---|---|
| RT | Lac du Bonnet Batholith |
| Pinawa Manitoba | |
| waste disposal | |
| SN | Canada's URL is located at (N50#DG15'W095#DG50'), about 10 kilometers north of Pinawa Manitoba, Whiteshell Research Area, W end of Whiteshell Provincial Park. In the Lac du Bonnet Batholith, it is site of nuclear waste disposal investigations. May occur i |
| underground space | |
|---|---|
| UF | space, underground |
| RT | land use |
| underground cavities | |
| underground installations | |
| underground storage | |
| underground storage | |
|---|---|
| UF | subsurface storage |
| RT | waste disposal |
| underground installations | |
| storage | |
| leaking underground storage tanks | |
| far-field | |
| near-field | |
| underground disposal | |
| gas storage | |
| oil storage | |
| underground storage tanks | |
| high-level waste | |
| low-level waste | |
| Stripa region | |
| underground space | |
| SN | Added to Thesaurus in 1982. |
| underground storage tanks | |
|---|---|
| RT | gas storage |
| gasoline | |
| leaking underground storage tanks | |
| oil storage | |
| petroleum products | |
| storage | |
| underground disposal | |
| underground storage | |
| waste disposal | |
| SN | Use leaking underground storage tanks if applicable. Added to Thesaurus in 1995. |
| underground streams | |
|---|---|
| RT | caverns |
| caves | |
| exsurgence | |
| hydrogeology | |
| hydrology | |
| karst | |
| resurgence | |
| springs | |
| streams | |
| tributaries | |
| geomorphology | |
| ground water | |
| unsaturated zone | |
| SN | Added to Thesaurus in 1982. |
| underground waste disposal | |
|---|---|
| USE | underground disposal |
| underground water | |
|---|---|
| USE | ground water |
| Underhill Formation | |
|---|---|
| RT | Lower Cambrian |
| Neoproterozoic | |
| Vermont | |
| SN | Indexed with ages as applicable. Added to Thesaurus in 1989. |
| underplating | |
|---|---|
| UF | subcretion |
| RT | extension tectonics |
| plate tectonics | |
| rifting | |
| accretionary wedges | |
| active margins | |
| subduction zones | |
| lithosphere | |
| continental crust | |
| oceanic crust | |
| underthrust faults | |
| SN | Used to refer to different concepts in plate tectonics: In areas of rifting and thinning of continental crust, used to describe emplacement of basaltic magma at the base of the continental crust. In oceanic subduction zones, used to refer to accretion of |
| underpressure | |
|---|---|
| RT | fluid pressure |
| hydrostatic pressure | |
| pore pressure | |
| pressure | |
| reservoir properties | |
| underthrust faults | |
|---|---|
| BT | faults |
| .underthrust faults | |
| RT | underplating |
| SN | Before 1978, search underthrust AND faults. |
| UNDP | |
|---|---|
| UF | United Nations Development Programme |
| RT | associations |
| United Nations | |
| SN | Added to Thesaurus in 1981. |
| undulatory extinction | |
|---|---|
| RT | microscope methods |
| optical extinction | |
| SN | Added to Thesaurus in 1981. |