ice  search
RTfrozen ground
 glacial features
 glaciers
 ground ice
 hydrology
 hydrosphere
 ice cores
 ice dams
 ice fields
 ice lenses
 ice rafting
 meltwater
 oxides
 periglacial features
 permafrost
 rock glaciers
 sea ice
 scour
 snow
 thawing
 water
SNBefore 1972, also search (ice, nonglacial or ice, non-glacial) if applicable. For the mineral, also index oxides.
ice ages  search
SNA valid index term through 1977 used in combination with ancient (i.e. Ice ages, ancient). After 1978, use ancient ice ages for pre-Quaternary glaciation; use glaciation for Quaternary age.
ice caps  search
RTglacial extent
 glacial features
 glacial geology
 glacial lobes
 glaciers
 ice sheets
 ice streams
ice cores  search
RTboreholes
 cores
 geomorphology
 glacial geology
 glaciers
 hydrology
 ice
 permafrost
SNAlso search ice and cores. Added to Thesaurus in 1995.
ice dams  search
BTdams
 .natural dams
 ..ice dams
RTfluvial features
 lacustrine features
 glacial features
 glacial lakes
 jokulhlaups
 ice
 spillways
SNAlso index lacustrine features, glacial features, or fluvial features as applicable.
ice fields  search
UFicefields
RTglaciers
 glacial features
 periglacial features
 snow
 ice
 ice sheets
 ice shelves
 sea ice
 ice-marginal features
SNAdded to Thesaurus in 1993.
ice flows  search
SNAs of 1993, use ice movement.
ice islands  search
SNNot a valid GeoRef index term after 1970. Used in subfile N. Now see artificial islands, sea ice, ice shelves, ice rafting or icebergs.
ice lenses  search
RTglacial features
 ground ice
 ice
 ice wedges
 lenses
 palsas
 periglacial features
 permafrost
SNAdded to Thesaurus in 1993.
ice mantle  search
USEice sheets
ice movement  search
RTdeposition
 glacial geology
 glaciation
 glacier surges
 glaciers
 gravity flows
 ice streams
 movement
SNBefore 1976, also search ice movements. Before 1993, also search gravity flows AND glaciers if applicable.
ice rafting  search
UFice-rafting
 rafting, ice
RTsedimentation
 sediment transport
 raft foundations
 Heinrich events
 ice
 ice streams
ice scouring  search
SNUse glacial erosion AND scour if applicable. Also see icebergs if applicable.
ice sheets  search
UFice mantle
RTglacial geology
 glaciers
 glaciation
 thickness
 glacial extent
 glacial lobes
 ice caps
 ice fields
 ice streams
ice shelves  search
UFshelves, ice
RTglacial geology
 glaciers
 glaciation
 marine environment
 ice fields
ice streams  search
RTglacial features
 glacial geology
 glaciers
 ice caps
 ice movement
 ice rafting
 ice sheets
 rivers and streams
 streams
SNAdded to Thesaurus in 1993.
ice veins  search
USEice wedges
ice wedges  search
BTperiglacial features
 .ice wedges
UFice veins
 wedges, ice
RTglacial geology
 permafrost
 taliks
 frost action
 fossil ice wedges
 ground ice
 ice lenses
ice wedges, fossil  search
USEfossil ice wedges
ice-mar  search
ice-marginal features  search
RTgeomorphology
 glacial features
 glacial geology
 glaciers
 ice fields
 periglacial features
SNAdded to Thesaurus in 1985.
ice-rafting  search
USEice rafting
ice-wedge cast  search
USEfossil ice wedges
ice-wedge fill  search
USEfossil ice wedges
ice-wedge pseudomorph  search
USEfossil ice wedges
icebergs  search
RTglacial features
 glaciers
 sea ice
 scour
 tidewater glaciers
icefields  search
USEice fields
Iceland  search
BTEurope
 .Western Europe
 ..Iceland
NTBreidamerkurjokull
 Grimsvotn
 Hekla
 Kolbeinsey Island
 Krafla
 Reykjanes Peninsula
 Skeidararjokull
 Snaefellsnes Peninsula
 Surtsey
 Vatnajokull
 Vestmannaeyjar
RTArctic region
 Atlantic Ocean
 Atlantic Ocean Islands
 Iceland Research Drilling Project
 Icelandic Plume
SNIndependent country and island 155 miles SE of Greenland.
Iceland crystal  search
USEIceland spar
Iceland Research Drilling Project  search
RTAtlantic Ocean
 boreholes
 cores
 Iceland
 Mid-Atlantic Ridge
 North Atlantic
 oceanic crust
 sea-floor spreading
 well-logging
SNBorehole at Reydarfjordur, Iceland. Added to Thesaurus in 1985.
Iceland spar  search
BTcarbonates
 .Iceland spar
UFdouble-refracting spar
 Iceland crystal
RTcalcite
SNVariety of calcite.
Iceland-Faeroe Ridge  search
BTAtlantic Ocean
 .North Atlantic
 ..Iceland-Faeroe Ridge
UFFaeroe-Iceland Ridge
 Iceland-Faeroe Rise
 Iceland-Faeroes Ridge
RTDSDP Site 336
 Leg 38
 DSDP Site 352
SNBetween Iceland and Faeroe Islands.
Iceland-Faeroe Rise  search
USEIceland-Faeroe Ridge
Iceland-Faeroes Ridge  search
USEIceland-Faeroe Ridge
Icelandic hot spot  search
USEIcelandic Plume
Icelandic Plateau  search
BTArctic Ocean
 .Norwegian Sea
 ..Icelandic Plateau
RTDSDP Site 348
 ODP Site 985
SNW of Jan Mayen Ridge, N of Iceland. Added to Thesaurus in 1981.
Icelandic Plume  search
UFIcelandic hot spot
RTGreenland
 Iceland
 mantle plumes
 hot spots
SNBefore 1998, also search Iceland AND plumes or mantle plumes.
icequakes  search
RTearthquakes
 glaciers
 glaciotectonics
SNAdded to Thesaurus in 1981.