Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
ni  | |
|---|---|
| USE | nickel |
| Niagara County New York | |
|---|---|
| BT | United States |
| .New York | |
| ..Niagara County New York | |
| SN | W New York. |
| Niagara Escarpment | |
|---|---|
| BT | North America |
| .Niagara Escarpment | |
| RT | Ontario |
| Iowa | |
| Illinois | |
| Wisconsin | |
| New York | |
| Michigan | |
| Bruce Peninsula | |
| Great Lakes region | |
| Manitoulin Island | |
| Niagara Falls | |
| SN | Cuesta of Paleozoic rocks sloping away from the Canadian Shield, extending from central New York to N of Lake Huron and Lake Michigan, continuing southwestward into Wisconsin, Illinois, and Iowa. Indexed with states and province as applicable. |
| Niagara Falls | |
|---|---|
| BT | North America |
| .Niagara Falls | |
| RT | Ontario |
| New York | |
| Niagara Escarpment | |
| SN | Great falls of the Niagara River. Also search Niagara. Indexed with state and/or province as applicable. |
| Niagara River | |
|---|---|
| BT | North America |
| .Niagara River | |
| RT | Ontario |
| New York | |
| SN | Flows between Lake Erie and Lake Ontario going over the Niagara Escarpment. Also search Niagara. Indexed with province and/or state as applicable. |
| Niagaran | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Silurian | |
| ....Middle Silurian | |
| .....Niagaran | |
| NT | Bainbridge Formation |
| Lockport Formation | |
| Racine Dolomite | |
| SN | Provincial series, North America. Above Alexandrian, below Cayugan. |
| Nicaragua | |
|---|---|
| BT | Central America |
| .Nicaragua | |
| NT | Leon Nicaragua |
| Managua Nicaragua | |
| Masaya | |
| RT | San Juan River |
| Chortis Block | |
| Cerro Negro | |
| Leon City Spain | |
| Nicaragua earthquake 1992 | |
| Nicaragua earthquake 1992 | |
|---|---|
| BT | earthquakes |
| .Nicaragua earthquake 1992 | |
| RT | Northeast Pacific |
| Nicaragua | |
| SN | Epicenter offshore W Nicaragua. Slow earthquake which produced tsunamis. |
| Nicaragua Rise | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Caribbean Sea | |
| ...Nicaragua Rise | |
| UF | Nicaraguan Rise |
| RT | Leg 15 |
| ODP Site 1000 | |
| ODP Site 1001 | |
| SN | Between Jamaica and Nicaragua. |
| Nicaraguan Rise | |
|---|---|
| USE | Nicaragua Rise |
| niccolite | |
|---|---|
| BT | arsenides |
| .niccolite | |
| UF | nickeline |
| nicolite | |
| RT | nickel ores |
| nickel | |
| Nice France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Alpes-Maritimes France | |
| ....Nice France | |
| SN | City on the Mediterranean Sea on the Riviera in S Alpes-Maritimes, SE France. |
| Nicholas County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Nicholas County Kentucky | |
| Nicholas County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Nicholas County West Virginia | |
| nick points | |
|---|---|
| USE | knickpoints |
| nickel | |
|---|---|
| BT | metals |
| .nickel | |
| UF | ni |
| RT | nickel ores |
| awaruite | |
| heavy metals | |
| siderophile elements | |
| josephinite | |
| kamacite | |
| niccolite | |
| pentlandite | |
| SN | Chemical element. Use nickel ores for nickel as a commodity. |
| nickel glance | |
|---|---|
| USE | gersdorffite |
| nickel ores | |
|---|---|
| BT | metal ores |
| .nickel ores | |
| RT | Allarechenskiy |
| nickel | |
| garnierite | |
| gersdorffite | |
| millerite | |
| niccolite | |
| pentlandite | |
| Norilsk region | |
| rammelsbergite | |
| Strathcona Mine | |
| nickel pyrites | |
|---|---|
| USE | millerite |
| nickel-antimony glance | |
|---|---|
| USE | ullmannite |
| nickeline | |
|---|---|
| USE | niccolite |
| nickpoints | |
|---|---|
| USE | knickpoints |
| Nicobar Islands | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Bengal Islands | |
| ....Nicobar Islands | |
| UF | Nicobars |
| SN | Island group in Bay of Bengal NW of Sumatra, forming S part of Andaman and Nicobar Islands. |
| Nicobars | |
|---|---|
| USE | Nicobar Islands |
| Nicola Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Triassic | |
| ....Nicola Group | |
| RT | Canada |
| British Columbia | |
| SN | S British Columbia. |
| Nicolaus California | |
|---|---|
| BT | United States |
| .California | |
| ..Sutter County California | |
| ...Nicolaus California | |
| SN | Village N of Sacramento in N central California. |
| Nicolet County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Nicolet County Quebec | |
| nicolite | |
|---|---|
| USE | niccolite |
| Nicollet County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Nicollet County Minnesota | |
| nicopyrite | |
|---|---|
| USE | pentlandite |
| Nicoya Complex | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Nicoya Complex | |
| RT | Upper Jurassic |
| Lower Cretaceous | |
| Costa Rica | |
| Leg 67 | |
| SN | NW Costa Rica. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| Nicoya Peninsula | |
|---|---|
| BT | Central America |
| .Costa Rica | |
| ..Nicoya Peninsula | |
| SN | Peninsula in W Costa Rica, extending between the Gulf of Nicoya and Pacific Ocean. Added to Thesaurus in 1989. |
| Nida Basin | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Poland | |
| ...Kielce Poland | |
| ....Nida Basin | |
| UF | Nida River basin |
| SN | River basin in S Poland. Also search Nida. |
| Nida River basin | |
|---|---|
| USE | Nida Basin |
| Niemen River basin | |
|---|---|
| USE | Neman River basin |
| Nievre France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Nievre France | |
| NT | Nivernais Plateau |
| RT | Morvan |
| Yonne Valley | |
| SN | Department in central France. |
| Niger | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Niger | |
| NT | Agades Niger |
| UF | Niger Republic |
| RT | Sahara |
| Mali-Niger Syneclise | |
| Niger River | |
| Niger Valley | |
| Sahel | |
| Chad Basin | |
| Lake Chad | |
| Tibesti Massif | |
| West African Shield | |
| Younger Granites | |
| Niger Delta | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Nigeria | |
| ...Niger Delta | |
| RT | Gulf of Guinea |
| SN | On the Gulf of Guinea. |
| Niger Republic | |
|---|---|
| USE | Niger |
| Niger River | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Niger River | |
| UF | Joliba River |
| Kworra River | |
| RT | Nigeria |
| Mali | |
| Niger | |
| Benin | |
| Niger Valley | |
| Guinea | |
| SN | Rises in Guinea and flows NE into a great curve and then SE into the Gulf of Guinea. Indexed with countries as applicable. |
| Niger Valley | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Niger Valley | |
| UF | Joliba Valley |
| Kworra Valley | |
| RT | Nigeria |
| Mali | |
| Niger | |
| Benin | |
| Niger River | |
| Guinea | |
| SN | River valley. Indexed with countries as applicable. |
| nigerite | |
|---|---|
| BT | oxides |
| .nigerite | |
| niggliite | |
|---|---|
| BT | alloys |
| .niggliite | |
| RT | platinum |
| platinum minerals | |
| tin | |
| Nihewan Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Nihewan Formation | |
| RT | China |
| Hebei China | |
| SN | Hebei Province of N China. Added to Thesaurus in 1989. |
| Nihon'arupusu | |
|---|---|
| USE | Japanese Alps |
| Nihonkai-Chuba earthquake 1983 | |
|---|---|
| USE | Japan Sea earthquake 1983 |
| Nihonkai-Chubu earthquake 1983 | |
|---|---|
| USE | Japan Sea earthquake 1983 |
| Niigata earthquake 1964 | |
|---|---|
| BT | earthquakes |
| .Niigata earthquake 1964 | |
| RT | Honshu |
| Japan | |
| Niigata Japan | |
| SN | Epicenter near Niigata, NW Honshu, Japan. Added to Thesaurus in 1985. |
| Niigata Japan | |
|---|---|
| BT | nshu |
| .Niigata Japan | |
| NT | Kashiwazaki Japan |
| Myoko Mountain | |
| Shinano River | |
| RT | Chubu Japan |
| Japanese Alps | |
| Awashima | |
| Niigata earthquake 1964 | |
| Sado Island | |
| SN | Prefecture including the city in NW Honshu. |
| Nikitovka Ukraine | |
|---|---|
| BT | Europe |
| .Ukraine | |
| ..Nikitovka Ukraine | |
| SN | City in central Donetsk (formerly Stalino) Oblast in Donets Basin. This term has multiple hierarchies. |
| Nikolai Greenstone | |
|---|---|
| RT | Alaska |
| Permian | |
| Permian-Triassic boundary | |
| Triassic | |
| SN | E Alaska. Indexed with ages as applicable. Added to Thesaurus in 1985. |
| Nikopol Ukraine | |
|---|---|
| BT | Europe |
| .Ukraine | |
| ..Dnepropetrovsk Ukraine | |
| ...Nikopol Ukraine | |
| SN | City in Dnepropetrovsk Oblast in E central Ukraine. This term has multiple hierarchies. |
| Niksic Yugoslavia | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Yugoslavia | |
| ...Montenegro | |
| ....Niksic Yugoslavia | |
| SN | Town in W Montenegro. |
| Nile Delta | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Egypt | |
| ...Nile Delta | |
| UF | Nile River delta |
| RT | Nile River |
| DSDP Site 131 | |
| SN | On Mediterranean Sea E of Alexandria. |
| Nile River | |
|---|---|
| BT | Africa |
| .Nile River | |
| RT | Ethiopia |
| Egypt | |
| Aswan Dam | |
| Blue Nile | |
| Sudan | |
| Uganda | |
| Burundi | |
| Nile Delta | |
| SN | The longest river in the world. Its remotest headstream is the Luvironza River in Burundi. The flow is through Lake Victoria and Lake Albert, and then, as the White Nile, into Sudan where it unites with the Blue Nile from Ethiopia as the Nile proper which |
| Nile River delta | |
|---|---|
| USE | Nile Delta |
| Nile Valley | |
|---|---|
| BT | Africa |
| .Nile Valley | |
| RT | Egypt |
| Sudan | |
| Nubia | |
| Middle Nile Valley | |
| SN | River valley of the Nile River proper. Indexed with countries as applicable. |
| Nilgiri | |
|---|---|
| SN | No longer a valid term for GeoRef. Former Indian state near coast of NW Bay of Bengal. Became part of Orissa state, established 1950. Was also sometimes used for Nilgiri Hills. See Orissa India. |
| Nilssoniales | |
|---|---|
| BT | Plantae |
| .Spermatophyta | |
| ..Gymnospermae | |
| ...Nilssoniales | |
| Nimba Mountains | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Nimba Mountains | |
| RT | Ivory Coast |
| Liberia | |
| Guinea | |
| SN | West African bulge. Also search Nimba. Indexed with countries as applicable. |
| Ninetyeast Ridge | |
|---|---|
| BT | Indian Ocean |
| .Ninetyeast Ridge | |
| RT | Leg 121 |
| Leg 26 | |
| Leg 22 | |
| DSDP Site 214 | |
| DSDP Site 216 | |
| DSDP Site 217 | |
| DSDP Site 253 | |
| DSDP Site 254 | |
| ODP Site 756 | |
| ODP Site 757 | |
| ODP Site 758 | |
| SN | Undersea ridge extending N and S along line of 90#DG E longitude from just S of Nicobar Islands to approximately 30#DG S latitude. Also search East Indian Ridge. |
| Ning-hsia China | |
|---|---|
| USE | Ningxia China |
| Ninghsia China | |
|---|---|
| USE | Ningxia China |
| Ningsia China | |
|---|---|
| USE | Ningxia China |
| Ningxia China | |
|---|---|
| BT | Asia |
| .Far East | |
| ..China | |
| ...Ningxia China | |
| UF | Ning-hsia China |
| Ninghsia China | |
| Ningsia China | |
| RT | Haiyuan earthquake 1920 |
| Ordos Basin | |
| SN | Autonomous region, NW China. |
| niningerite | |
|---|---|
| BT | sulfides |
| .niningerite | |
| RT | meteorites |
| SN | Meteorite mineral. |
| Niniyur Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Paleocene | |
| .....Danian | |
| ......Niniyur Group | |
| RT | Upper Cretaceous |
| India | |
| Tamil Nadu India | |
| SN | S India. |
| niobates | |
|---|---|
| BT | oxides |
| .niobates | |
| NT | aeschynite |
| loparite | |
| nenadkevichite | |
| niobotantalates | |
| zirconolite | |
| UF | columbates |
| niobium | |
|---|---|
| BT | metals |
| .niobium | |
| UF | columbium |
| Nb | |
| RT | niobium ores |
| high-field-strength elements | |
| tantalum | |
| SN | Chemical element. Use niobium ores for niobium as a commodity. |
| niobium ores | |
|---|---|
| BT | metal ores |
| .niobium ores | |
| RT | pyrochlore |
| columbite | |
| tantalum ores | |
| niobium | |
| niobotantalates | |
|---|---|
| BT | oxides |
| .niobates | |
| ..niobotantalates | |
| BT | oxides |
| .tantalates | |
| ..niobotantalates | |
| NT | betafite |
| columbite | |
| euxenite | |
| fergusonite | |
| ixiolite | |
| microlite | |
| pyrochlore | |
| samarskite | |
| stibiotantalite | |
| tantalite | |
| tapiolite | |
| wodginite | |
| SN | This term has multiple hierarchies. |
| Niobrara County Wyoming | |
|---|---|
| BT | United States |
| .Wyoming | |
| ..Niobrara County Wyoming | |
| RT | Black Hills |
| Walker Creek Field | |
| SN | E Wyoming. |
| Niobrara Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Niobrara Formation | |
| RT | New Mexico |
| Wyoming | |
| Montana | |
| Colorado | |
| Nebraska | |
| North Dakota | |
| Minnesota | |
| Kansas | |
| South Dakota | |
| Colorado Group | |
| Fort Hays Limestone Member | |
| Smoky Hill Chalk Member | |
| SN | In Colorado Group. Includes Fort Hays Limestone Member, Smoky Hill Chalk Member. |
| Nipissing Diabase | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Nipissing Diabase | |
| RT | Canada |
| Ontario | |
| Quebec | |
| Nipissing District Ontario | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Nipissing District Ontario | |
| NT | Brent Crater |
| Lake Nipissing | |
| North Bay Ontario | |
| UF | District of Nipissing |
| SN | SE central Ontario. |
| Nisku Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Upper Devonian | |
| .....Nisku Formation | |
| RT | Alberta |
| Birdbear Formation | |
| SN | In Winterburn Group. Term restricted to region in central Alberta. For Upper Devonian strata in Montana, North Dakota and Saskatchewan, see Birdbear Formation. Added to Thesaurus in 1989. |
| Nisqually Glacier | |
|---|---|
| BT | United States |
| .Washington | |
| ..Pierce County Washington | |
| ...Nisqually Glacier | |
| RT | Mount Rainier |
| SN | On S slope of Mt Rainier in Mt. Rainier National Park in W central Washington. |
| nitrate deposits | |
|---|---|
| RT | nitrates |
| SN | Commodity. See List C. |
| nitrate ion | |
|---|---|
| RT | critical load |
| ions | |
| geochemistry | |
| nitrates | |
| nitrification | |
| nitrite ion | |
| SN | Added to Thesaurus in 1985. |
| nitrates | |
|---|---|
| RT | minerals |
| nitrate deposits | |
| nitrate ion | |
| SN | Used for minerals. As of 1981, use nitrate deposits for nitrate as a commodity. As of 1998, use nitrate ion for pollution. |
| nitric acid | |
|---|---|
| BT | inorganic acids |
| .nitric acid | |
| UF | HNO3 |
| RT | nitrogen dioxide |
| nitrides | |
|---|---|
| BT | alloys |
| .nitrides | |
| nitrification | |
|---|---|
| RT | ammonia compound |
| ammonium | |
| biochemistry | |
| biogenic processes | |
| geomicrobiology | |
| nitrate ion | |
| geochemistry | |
| nitrite ion | |
| nitrogen | |
| oxidation | |
| processes | |
| soils | |
| nitrite ion | |
|---|---|
| UF | nitrites |
| RT | geochemistry |
| pollutants | |
| nitrification | |
| ions | |
| nitrate ion | |
| nitrogen | |
| SN | Also used for any organic or inorganic compound containing the NO-` radical. Added to Thesaurus in 1998. |
| nitrites | |
|---|---|
| USE | nitrite ion |
| nitrogen | |
|---|---|
| NT | N-15 |
| N-15/N-14 | |
| organic nitrogen | |
| RT | chemical elements |
| critical load | |
| fertilizers | |
| geochemical cycle | |
| nitrification | |
| nitrite ion | |
| soils | |
| nitrogen dioxide | |
|---|---|
| UF | NO2 |
| RT | geochemistry |
| atmosphere | |
| oxides | |
| gases | |
| nitric acid | |
| nitrous oxide | |
|---|---|
| UF | laughing gas |
| RT | geochemistry |
| oxides | |
| gases | |
| SN | Added to Thesaurus in 1985. |
| Nittany Valley | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Nittany Valley | |
| RT | Centre County Pennsylvania |
| Clinton County Pennsylvania | |
| SN | In Centre and Clinton counties in central Pennsylvania. Indexed with counties as applicable. |
| Nitzschia | |
|---|---|
| BT | Plantae |
| .algae | |
| ..diatoms | |
| ...Nitzschia | |
| RT | microfossils |
| SN | Genus. Indexed with microfossils if applicable. |
| nivation | |
|---|---|
| UF | snow-patch erosion |
| RT | glaciers |
| erosion | |
| water erosion | |
| sheet erosion | |
| Nivernais Hills | |
|---|---|
| USE | Nivernais Plateau |
| Nivernais Plateau | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Nievre France | |
| ....Nivernais Plateau | |
| UF | Nivernais Hills |
| SN | In central France. |
| Nix Olympia | |
|---|---|
| USE | Olympus Mons |
| Nixon Fork Terrane | |
|---|---|
| BT | United States |
| .Alaska | |
| ..West-Central Alaska | |
| ...Nixon Fork Terrane | |
| RT | Coast Belt |
| SN | In Medfra Quadrangle, central Alaska. Added to Thesaurus in 1989. |
| Nizhni Novgorod Russian Federation | |
|---|---|
| USE | Nizhniy Novgorod Russian Federation |
| Nizhniy Novgorod Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Nizhniy Novgorod Russian Federation | |
| BT | Europe |
| .Nizhniy Novgorod Russian Federation | |
| UF | Gorki Russian Federation |
| Gorkiy Russian Federation | |
| Gorky Russian Federation | |
| Nizhni Novgorod Russian Federation | |
| SN | Oblast and city, SE Russian Federation. Before 1993, also search Gorki Russian Republic. This term has multiple hierarchies. |
| Nizhniy Ufaley Russian Federation | |
|---|---|
| USE | Ufaley Russian Federation |
| Nizke Jesenik Mountains | |
|---|---|
| USE | Nizky Jezenik Mountains |
| Nizke Tatra | |
|---|---|
| USE | Low Tatra Mountains |
| Nizky Jezenik Mountains | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Czech Republic | |
| ...Moravia | |
| ....Nizky Jezenik Mountains | |
| UF | Low Jesenik Mountains |
| Nizke Jesenik Mountains | |
| SN | In NW Czech Republic near the Polish border. Also search Nizky Jezenik. |