Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Ag  | |
|---|---|
| USE | silver |
| Agades Niger | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Niger | |
| ...Agades Niger | |
| UF | Agadez Niger |
| SN | Town in W central Niger. |
| Agadez Niger | |
|---|---|
| USE | Agades Niger |
| Agarak | |
|---|---|
| BT | Europe |
| .Armenia | |
| ..Agarak | |
| SN | Mining region in central Armenia. This term has multiple hierarchies. |
| agate | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..silica minerals | |
| ...agate | |
| RT | amygdules |
| chalcedony | |
| gems | |
| quartz | |
| SN | Variety of quartz. |
| age | |
|---|---|
| RT | absolute age |
| exposure age | |
| ground water | |
| maturity | |
| ocean basins | |
| P-T-t paths | |
| relative age | |
| residence time | |
| age determination | |
|---|---|
| SN | Not a valid term for GeoRef. For absolute age determination, use absolute age in conjunction with dates. See relative age for specific methods. |
| Ager Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....lower Eocene | |
| ......Ager Formation | |
| RT | Spain |
| SN | Catalonia and the Pyrenees. |
| agglomerate | |
|---|---|
| RT | breccia |
| conglomerate | |
| igneous rocks | |
| pyroclastics | |
| sedimentary rocks | |
| agglutinates | |
|---|---|
| RT | fines |
| Moon | |
| particles | |
| aggradation | |
|---|---|
| RT | geomorphology |
| processes | |
| aggregate | |
|---|---|
| UF | lightweight aggregate |
| RT | pumice deposits |
| soils | |
| construction materials | |
| crushed stone | |
| gravel deposits | |
| morphology | |
| rocks | |
| sand | |
| sands | |
| trap rocks | |
| SN | For the commodity, also search gravel deposits, limestone deposits, granite deposits, or crushed stone as applicable. For the soil unit, search in combination with soils. If a commodity, also index construction materials. |
| aggregation | |
|---|---|
| SN | A valid term through 1975. After 1975, use sedimentation. |
| AGI | |
|---|---|
| UF | American Geological Institute |
| RT | associations |
| SN | Acronym. Added to Thesaurus in 1989. |
| Agly Massif | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Pyrenees-Orientales France | |
| ....Agly Massif | |
| SN | S France. |
| agmatite | |
|---|---|
| BT | metamorphic rocks |
| .migmatites | |
| ..agmatite | |
| Agnatha | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Agnatha | |
| NT | Heterostraci |
| Osteostraci | |
| Ostracodermi | |
| RT | Pisces |
| Cyclostomata | |
| SN | Class. |
| Agnes | |
|---|---|
| SN | No longer a valid term for GeoRef. See Hurricane Agnes. |
| Agnostida | |
|---|---|
| BT | Invertebrata |
| .Arthropoda | |
| ..Trilobitomorpha | |
| ...Trilobita | |
| ....Agnostida | |
| Agnotozoic | |
|---|---|
| USE | Proterozoic |
| agpaite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..syenites | |
| ...agpaite | |
| agrichemicals | |
|---|---|
| USE | agrochemicals |
| Agricola Lake | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Mackenzie District Northwest Territories | |
| ...Agricola Lake | |
| SN | This term has multiple hierarchies. |
| agricultural chemicals | |
|---|---|
| USE | agrochemicals |
| agricultural waste | |
|---|---|
| UF | waste, agricultural |
| RT | agriculture |
| agrochemicals | |
| waste disposal | |
| SN | Before 1978, search agricultural. |
| agriculture | |
|---|---|
| RT | agricultural waste |
| fertilization | |
| fertilizers | |
| horticultural peat | |
| land management | |
| land use | |
| soils | |
| U. S. Department of Agriculture | |
| agrochemicals | |
|---|---|
| UF | agrichemicals |
| agricultural chemicals | |
| RT | pollution |
| soils | |
| agricultural waste | |
| fertilizers | |
| alachlor | |
| aldicarb | |
| atrazine | |
| bentazon | |
| chemical waste | |
| chlorobenzene | |
| chlorophenols | |
| CREAMS | |
| cyanazine | |
| DDT | |
| fungicides | |
| GLEAMS | |
| herbicides | |
| hexachlorobenzene | |
| insecticides | |
| metolachlor | |
| nutrients | |
| pesticides | |
| pollutants | |
| tria | |
| SN | Mainly compounds or mixtures used on farm crops. They include fertilizers, pesticides, soil conditioners, and plant hormones. Also index pollutants and specific chemicals e.g. DDT, as applicable. Added to Thesaurus in 1995. |
| Agrokipia Deposit | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Cyprus | |
| ...Agrokipia Deposit | |
| RT | base metals |
| copper ores | |
| iron ores | |
| Troodos Massif | |
| Troodos Ophiolite | |
| zinc ores | |
| SN | Iron-zinc-copper sulfide stockwork deposit. Before 1993, also search Agrokipia and commodity. Added to Thesaurus in 1993. |
| Agto Greenland | |
|---|---|
| BT | Arctic region |
| .Greenland | |
| ..Agto Greenland | |
| SN | Fishing settlement on small island in Davis Strait. |
| AGU | |
|---|---|
| UF | American Geophysical Union |
| RT | associations |
| SN | Acronym. Added to Thesaurus in 1989. |
| Agua Blanca Fault | |
|---|---|
| RT | Baja California |
| California | |
| Mexico | |
| North America | |
| SN | Indexed with North America or states as applicable. |
| Aguacate Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Aguacate Group | |
| RT | Pliocene |
| Miocene | |
| Mexico | |
| Costa Rica | |
| SN | Miocene-Pliocene. Costa Rica and Mexico. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| Aguja Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Gulfian | |
| ......Aguja Formation | |
| RT | Texas |
| SN | W Texas. Added to Thesaurus in 1989. |
| Agulhas Bank | |
|---|---|
| BT | Indian Ocean |
| .Agulhas Bank | |
| RT | Table Mountain Group |
| SN | South of Cape of Good Hope. |
| Agung, Mount | |
|---|---|
| USE | Mount Agung |