Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
du ![]() |
|---|
Du Page County Illinois ![]() | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Du Page County Illinois | |
Dubai ![]() | |
|---|---|
| BT | Asia |
| .Arabian Peninsula | |
| ..United Arab Emirates | |
| ...Dubai | |
| SN | Emirate. One of federation of 7 states at S end of Persian Gulf. |
Dublin Ireland ![]() | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Ireland | |
| ...Dublin Ireland | |
| SN | County and city on Irish Sea in E Ireland. |
Dubois County Indiana ![]() | |
|---|---|
| BT | Indiana |
| .Dubois County Indiana | |
Dubuque County Iowa ![]() | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Dubuque County Iowa | |
Dubuque Format ![]() |
|---|
Dubuque Formation ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Middle Ordovician | |
| .....Dubuque Formation | |
| RT | Iowa |
| Illinois | |
| Wisconsin | |
| Minnesota | |
| SN | NW Illinois, E Iowa, SE Minnesota and SW Wisconsin. Added to Thesaurus in 1989. |
Duchesne County Utah ![]() | |
|---|---|
| BT | United States |
| .Utah | |
| ..Duchesne County Utah | |
| SN | NE Utah. |
Duchesne River For ![]() |
|---|
Duchesne River Formation ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Duchesne River Formation | |
| RT | Eocene |
| Oligocene | |
| Utah | |
| Colorado | |
| SN | Eocene or Oligocene. Unconformably underlies Bishop Conglomerate; unconformably overlies Uinta and Uinta (?) Formation. NW Colorado and NE Utah. Indexed with ages as applicable. |
Duck North Carolina ![]() | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Dare County North Carolina | |
| ...Duck North Carolina | |
| RT | Outer Banks |
| SN | Locale on Bodie Island, North Carolina's Outer Banks. Indexed with Outer Banks if applicable. |
Ducktown Tennessee ![]() | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Polk County Tennessee | |
| ...Ducktown Tennessee | |
| SN | Town in extreme SE Tennessee. |
ductile deformation ![]() | |
|---|---|
| BT | deformation |
| .ductile deformation | |
| RT | engineering geology |
| rock mechanics | |
| mechanical properties | |
| ductility | |
| fracture strength | |
| SN | Added to Thesaurus in 1989. |
ductility ![]() | |
|---|---|
| RT | deformation |
| ductile deformation | |
| rock mechanics | |
Dudley England ![]() | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....England | |
| .....Dudley England | |
| RT | Midlands |
| Northumberland England | |
| Staffordshire England | |
| SN | Town SW of Birmingham in West Midlands, W central England. Also occurs in other locations. Indexed with county as applicable. |
Duero Basin ![]() | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Duero Basin | |
| RT | Spain |
| Portugal | |
| Duero River | |
| SN | Added to Thesaurus in 1981. |
Duero River ![]() | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Duero River | |
| UF | Douro River |
| RT | Spain |
| Portugal | |
| Duero Basin | |
| SN | River in Spain and Portugal. Rises in central Spain, flows W to NE Portugal, then S along border, and W to Atlantic Ocean. Added to Thesaurus in 1985. |
Dufek Intrusion ![]() | |
|---|---|
| BT | Antarctica |
| .Dufek Intrusion | |
| RT | Pensacola Mountains |
| SN | In the Dufek Massif area of Forrestal Range in the Pensacola Mountains of Edith Ronne Land S of the Weddell Sea. |
Dufferin County Ontario ![]() | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Dufferin County Ontario | |
dufrenoysite ![]() | |
|---|---|
| BT | sulfosalts |
| .sulfarsenites | |
| ..dufrenoysite | |
Dugger Formation ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Middle Pennsylvanian | |
| ......Dugger Formation | |
| RT | Indiana |
| SN | SE Indiana. Added to Thesaurus in 1989. |
Dukes County Massachusetts ![]() | |
|---|---|
| BT | United States |
| .Massachusetts | |
| ..Dukes County Massachusetts | |
Dukla Poland ![]() | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Poland | |
| ...Dukla Poland | |
| SN | Town in Krosno Province, SE Poland. |
Duluth Complex ![]() | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Duluth Complex | |
| RT | Precambrian |
| SN | In NE Minnesota. Indexed with counties as applicable. |
Duluth Minnesota ![]() | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Saint Louis County Minnesota | |
| ...Duluth Minnesota | |
| SN | City at extreme W end of Lake Superior in NE Minnesota. |
dumortierite ![]() | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...dumortierite | |
Duna River ![]() | |
|---|---|
| USE | Danube River |
Dunai River ![]() | |
|---|---|
| USE | Danube River |
Dunantul ![]() | |
|---|---|
| USE | Transdanubia |
Dunarea River ![]() | |
|---|---|
| USE | Danube River |
Dunau River ![]() | |
|---|---|
| USE | Danube River |
Dunbarton ![]() |
|---|
Dunbarton Basin ![]() | |
|---|---|
| BT | United States |
| .Dunbarton Basin | |
| RT | South Carolina |
| Savannah River Plant | |
| Georgia | |
| Atlantic Coastal Plain | |
| Savannah River | |
| SN | Buried Triassic basin, Savannah River valley, Georgia and South Carolina. Indexed with counties as applicable. |
Dundas County Ontario ![]() | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Dundas County Ontario | |
Dundee Limestone ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Middle Devonian | |
| .....Dundee Limestone | |
| RT | Ontario |
| Ohio | |
| Michigan | |
| SN | S Michigan, N Ohio and S Ontario. Added to Thesaurus in 1989. |
Dundee Scotland ![]() | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Scotland | |
| .....Dundee Scotland | |
| RT | Angus Scotland |
| SN | City in Angus County, Tayside region, on Firth of Tay on North Sea. |
Dunderberg Shale ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Upper Cambrian | |
| .....Dunderberg Shale | |
| RT | Utah |
| California | |
| Nevada | |
| Nopah Formation | |
| SN | In Nopah Formation. Added to Thesaurus in 1989. |
Dundy County Nebraska ![]() | |
|---|---|
| BT | United States |
| .Nebraska | |
| ..Dundy County Nebraska | |
dune rock ![]() | |
|---|---|
| USE | eolianite |
dune structures ![]() | |
|---|---|
| BT | sedimentary structures |
| .bedding plane irregularities | |
| ..dune structures | |
| RT | dunes |
| SN | Before 1984, search dunes AND sedimentary structures. Added to Thesaurus in 1984. |
Dunedin New Zealand ![]() | |
|---|---|
| BT | Australasia |
| .New Zealand | |
| ..Otago New Zealand | |
| ...Dunedin New Zealand | |
| RT | South Island |
| SN | City on Pacific Ocean in SE South Island. Also index South Island. |
dunes ![]() | |
|---|---|
| NT | barchans |
| coastal dunes | |
| continental dunes | |
| foredunes | |
| submarine dunes | |
| UF | sand dunes |
| RT | geomorphology |
| eluvium | |
| antidunes | |
| bedding plane irregularities | |
| sand waves | |
| eolian features | |
| shore features | |
| sand ridges | |
| blowouts | |
| ergs | |
| sand seas | |
| sand sheets | |
| dune structures | |
| SN | As of 1984, use dune structures for the sedimentary structure. |
Dunham Dolomite ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Lower Cambrian | |
| .....Dunham Dolomite | |
| RT | Quebec |
| Vermont | |
| SN | S Quebec; NW and W central Vermont. Added to Thesaurus in 1989. |
dunite ![]() | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..ultramafics | |
| ...peridotites | |
| ....dunite | |
Dunkard Basin ![]() | |
|---|---|
| BT | United States |
| .Dunkard Basin | |
| RT | Ohio |
| Pennsylvania | |
| West Virginia | |
| SN | In West Virginia, Ohio, and Pennsylvania. Structural basin. Indexed with states as applicable. |
Dunkard Group ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Dunkard Group | |
| RT | Permian |
| Pennsylvanian | |
| Ohio | |
| Pennsylvania | |
| Maryland | |
| West Virginia | |
| SN | Pennsylvanian and Permian. Includes Washington and Greene formations. W Maryland, E Ohio, SW Pennsylvania, and N West Virginia. Indexed with ages as applicable. |
Dunkerque France ![]() | |
|---|---|
| USE | Dunkirk France |
Dunkirk France ![]() | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Nord France | |
| ....Dunkirk France | |
| UF | Dunkerque France |
| SN | City at S end of North Sea. |
Dunklin County Missouri ![]() | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Dunklin County Missouri | |
Dunlin Group ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Jurassic | |
| ....Lower Jurassic | |
| .....Dunlin Group | |
| RT | North Sea |
| SN | Includes Drake Formation, Cook Formation, Burton Formation, and Amundsen Formation. Added to Thesaurus in 1995. |
Dunn County North Dakota ![]() | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..Dunn County North Dakota | |
| SN | W central North Dakota. |
Dunn County Wisconsin ![]() | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Dunn County Wisconsin | |
| SN | W Wisconsin. |
Dunnage Melange ![]() | |
|---|---|
| RT | Dunnage Zone |
| Eastern Canada | |
| Newfoundland | |
| SN | North-central Newfoundland. Before 1998, this was often used for the larger area of the Dunnage Zone. Indexed with Canadian provinces or regions as applicable. |
Dunnage Terrane ![]() | |
|---|---|
| USE | Dunnage Zone |
Dunnage Zone ![]() | |
|---|---|
| UF | Dunnage Terrane |
| RT | Quebec |
| Appalachians | |
| Eastern Canada | |
| Maine | |
| Scotland | |
| Ireland | |
| Newfoundland | |
| New England | |
| Caledonides | |
| Dunnage Melange | |
| Iapetus | |
| SN | Or 'terrane', Appalachian Orogen. Tectonostratigraphic zone including the Dunnage Melange of north-central Newfoundland, it is now sometimes extended to the New England Appalachians, and the Caledonides of N Ireland, and Scotland. Remains of the Iapetus O |
Dunvegan Formation ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Cenomanian | |
| ......Dunvegan Formation | |
| RT | Alberta |
| British Columbia | |
| Yukon Territory | |
| Northwest Territories | |
| SN | W Canada. At one time referred to as Fort Nelson Formation in the Liard River region. Added to Thesaurus in 1995. |
Duperow Formation ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Upper Devonian | |
| .....Duperow Formation | |
| RT | Saskatchewan |
| Montana | |
| North Dakota | |
| Manitoba | |
| South Dakota | |
| Jefferson Group | |
| SN | In Jefferson Group. North Dakota, NE Montana, NW South Dakota, Manitoba and Saskatchewan. Added to Thesaurus in 1985. |
duplexes ![]() | |
|---|---|
| RT | bedding faults |
| decollement | |
| en echelon faults | |
| fault zones | |
| faults | |
| imbricate tectonics | |
| klippen | |
| thrust faults | |
| SN | Before 1993, also search duplex fault zones and duplex structures if applicable. Added to Thesaurus in 1993. |
Duplin County North Carolina ![]() | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Duplin County North Carolina | |
Duplin Formation ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....upper Miocene | |
| ......Duplin Formation | |
| RT | South Carolina |
| Florida | |
| North Carolina | |
| Georgia | |
| SN | Base of Duplin is an unconformity. Florida, E Georgia, E North Carolina, and E South Carolina. |
durability ![]() | |
|---|---|
| RT | degradation |
| engineering properties | |
| mechanical properties | |
| rock mechanics | |
| soil mechanics | |
| SN | Used in engineering studies. Added to Thesaurus in 1989. |
durain ![]() | |
|---|---|
| BT | macerals |
| .durain | |
| BT | lithotypes |
| .durain | |
| SN | This term has multiple hierarchies. |
Durance Basin ![]() | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Durance Basin | |
| SN | River basin in SE France. |
Durance France ![]() | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Lot-et-Garonne France | |
| ....Durance France | |
| SN | Village in SW France. |
Durango Mexico ![]() | |
|---|---|
| BT | Mexico |
| .Durango Mexico | |
| NT | Mapimi Mexico |
| RT | Guerrero Terrane |
| Sierra Madre Occidental | |
| SN | State in W central Mexico. Also a city. |
Durban South Africa ![]() | |
|---|---|
| BT | Africa |
| .Southern Africa | |
| ..South Africa | |
| ...KwaZulu-Natal South Africa | |
| ....Durban South Africa | |
| SN | City on the Indian Ocean. |
Durham County North Carolina ![]() | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Durham County North Carolina | |
| SN | N central North Carolina. |
Durham England ![]() | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....England | |
| .....Durham England | |
| RT | Ingleton England |
| SN | County in NE England. In 1974, parts of Durham went to form Cleveland County and Tyne and Wear County. |
duricrust ![]() | |
|---|---|
| BT | sedimentary rocks |
| .chemically precipitated rocks | |
| ..duricrust | |
| RT | soils |
| weathering | |
| calcrete | |
| caliche | |
| weathering crust | |
| ferricrete | |
| silcrete | |
Dushambe Tajikistan ![]() | |
|---|---|
| USE | Dushanbe Tajikistan |
Dushanbe Tajikistan ![]() | |
|---|---|
| BT | Asia |
| .Tajikistan | |
| ..Dushanbe Tajikistan | |
| UF | Dushambe Tajikistan |
| Stalinabad Tajikistan | |
| RT | Nurek Tajikistan |
| SN | City in W Tajikistan. This term has multiple hierarchies. |
dust ![]() | |
|---|---|
| BT | sediments |
| .clastic sediments | |
| ..dust | |
| RT | atmospheric transport |
| volcanic ash | |
| terrigenous materials | |
| cosmic dust | |
| dust storms | |
| deflation | |
| interplanetary dust | |
dust clouds ![]() | |
|---|---|
| SN | Use dust storms or planetesimals or ash clouds if applicable. |
dust clouds (volcanic) ![]() | |
|---|---|
| USE | ash clouds |
dust storms ![]() | |
|---|---|
| RT | atmospheric transport |
| dust | |
| storms | |
| SN | Also search dust clouds NOT extraterrestrial geology if applicable. |
Dutch East Indies ![]() | |
|---|---|
| USE | Indonesia |
Dutch Guiana ![]() | |
|---|---|
| USE | Surinam |
Dutch New Guinea ![]() | |
|---|---|
| USE | Irian Jaya Indonesia |
Dutch West Indies ![]() | |
|---|---|
| USE | Netherlands Antilles |
Dutchess County New York ![]() | |
|---|---|
| BT | United States |
| .New York | |
| ..Dutchess County New York | |
| SN | SE New York. |
Duval County Florida ![]() | |
|---|---|
| BT | United States |
| .Florida | |
| ..Duval County Florida | |
| SN | On the Atlantic Ocean in NE Florida. |
Duval County Texas ![]() | |
|---|---|
| BT | United States |
| .Texas | |
| ..Duval County Texas | |
| SN | S Texas. |
Duwi Formation ![]() | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Duwi Formation | |
| RT | Egypt |
| SN | Added to Thesaurus in 1989. |
