A

David

Darling

GEOLOGY AND PLANETARY SCIENCE

  • a'a
  • ablation
  • Acasta formation
  • accretionary lapilli
  • accretionary wedge
  • acid rock
  • active fault
  • aeolian structure
  • aftershock
  • agate
  • agglomerate
  • alabaster
  • albedo feature
  • albite
  • alkali flats
  • alluvial fan
  • alluvium
  • alumina
  • Amazonian Epoch
  • amber
  • amethyst
  • amphibole
  • andalusite
  • andesite
  • anglesite
  • anhydrite
  • anorthite
  • anorthosite
  • anthracite
  • anticline
  • antlerite
  • apatite
  • aquifer
  • aragonite
  • arète
  • arkose
  • arsenopyrite
  • asbestos
  • ash
  • asteroid
  • asthenosphere
  • astrobleme
  • augite
  • azurite

  • badlands
  • banded iron formation
  • barite
  • Barringer Crater
  • basalt
  • batholith
  • bauxite
  • beach
  • bed
  • bedrock
  • Benioff zone
  • benitoite
  • bentonite
  • bergschrund
  • beryl
  • biominerals
  • biotite
  • bituminous sands
  • black smoker
  • blind thrust fault
  • block mountain
  • Blue John
  • bluff
  • body wave
  • borax
  • bornite
  • Bouguer anomaly
  • braided stream
  • breccia
  • brucite
  • Burgess Shale
  • butte

  • calamine
  • calcite
  • caldera
  • Cambrian Period
  • Canadian Shield
  • canyon
  • carbonate
  • carbonation
  • Carboniferous Period
  • carnelian
  • carnotite
  • cassiterite
  • cat's eye
  • cave
  • celestine
  • Cenozoic Era
  • cerussite
  • chalcanthite
  • chalcedony
  • chalcocite
  • chalcopyrite
  • chalk
  • Chandler wobble
  • chaotic terrain
  • chert
  • chiastolite
  • chlorite
  • chromite
  • Chryse Planitia
  • chrysoberyl
  • chrysotile
  • cinder cone
  • cinnabar
  • cirque
  • clastic rock
  • clay
  • cleavage
  • cliff
  • clint
  • coal
  • col
  • columbite
  • combe
  • conchoid fracture
  • concretion
  • conglomerate
  • constructive margin
  • continent
  • continental drift
  • continental shelf
  • contour
  • cordierite
  • cordillera
  • core
  • corundum
  • covellite
  • crater
  • crater chain
  • creep
  • Cretaceous Period
  • Cretaceous-Tertiary boundary
  • crevasse
  • crossbedding
  • cross-cutting
  • crust
  • cryolite
  • cryovolcanism
  • cryptovolcano
  • crystal
  • crystallography
  • cuprite

  • dacite
  • dark halo crater
  • datolite
  • debris avalanche
  • denudation
  • deposition
  • destructive margin
  • Devonian Period
  • diagenesis
  • differentiation
  • dike
  • diorite
  • displacement
  • dolerite
  • dolomite
  • drift
  • drumlin
  • Dry Valleys
  • dumortierite
  • dunite

  • Earth
  • Earth impact craters
  • earthquake
  • East Pacific Rise
  • eclogite
  • Ediacaran Period
  • effusive eruption
  • ejecta
  • ejecta blanket
  • electrum
  • elements, terrestrial abundance
  • emerald
  • enstatite
  • Eocene Period
  • epicenter
  • epidote
  • era
  • erosion
  • escarpment
  • esker
  • evaporite
  • exfoliation
  • extrusive

  • fall line
  • fault
  • fault scarp
  • feldspar
  • fissure
  • flint
  • fluorite
  • fold
  • foliation
  • fossil
  • fumarole

  • gabbro
  • galena
  • garnet
  • garnierite
  • gemstone
  • geode
  • geodesy
  • geologic time
  • geology
  • geophysics
  • geosyncline
  • geyser
  • ghost crater
  • Giant's Causeway
  • gilsonite
  • glacial drift
  • glacial groove
  • glacier
  • glauconite
  • gneiss
  • goethite
  • Gondwanaland
  • gorge
  • graben
  • granite
  • gravel
  • gravimetric analysis
  • Great Rift Valley
  • grike
  • grit
  • gritstone
  • groundwater
  • Gusev Crater
  • guyot
  • gypsum

  • halite
  • hematite
  • hemimorphite
  • Hesperian Epoch
  • Holmes, Arthur (1890–1965)
  • Holocene Epoch
  • hornblende
  • hornfels
  • hornito
  • horst
  • hot spot
  • hot spring
  • hummock
  • Hutton, James (1726–1797)
  • hydraulic action
  • hydrology
  • hypersthene

  • ice ages
  • Iceland spar
  • ice-sheet
  • idocrase
  • igneous
  • igneous age
  • ilmenite
  • impact basin
  • impact crater
  • impact melt
  • inlier
  • inselberg
  • intrusive
  • ironstone
  • Isidis Planitia
  • island
  • island arc
  • isostasy
  • isthmus

  • jade
  • jasper
  • joint
  • jökulhlaup
  • Jurassic Period

  • kaolinite
  • kame
  • karst
  • kernite
  • kettle hole
  • kieselguhr
  • kimberlite
  • kipuka
  • kyanite

  • labradorite
  • lahar
  • land bridge
  • lapilli
  • lapis lazuli
  • laterite
  • Laurasia
  • lava
  • lava delta
  • lava flow
  • lava fountain
  • lava lake
  • lava tube
  • leaching
  • leucite
  • levée
  • lignite
  • limonite
  • limu
  • lithosphere
  • littoral cone
  • load
  • loess
  • longshore drift
  • Lyell, Charles (1797–1875)

  • maar
  • maghemite
  • magma
  • magnesite
  • magnetite
  • malachite
  • manganese nodules
  • manganite
  • Maniitsoq impact crater
  • mantle
  • marble
  • marcasite
  • maria
  • marl
  • mascon
  • matrix
  • meerschaum
  • Meridiani Planum
  • mesa
  • Mesozoic Era
  • metamorphic
  • meteorite
  • mica
  • microcline
  • mid-ocean ridge
  • migmatite
  • Milankovich cycles
  • Milne, John (1850–1913)
  • mineral
  • mineralization
  • mineralogy
  • Miocene Epoch
  • Mohoroviic discontinuity
  • Mohs scale
  • molybdenite
  • monadnock
  • monazite
  • montmorillonite
  • moonstone
  • moraine
  • Morokweng Crater
  • mountain
  • mud volcano
  • mudstone
  • multiringed basin
  • muscovite

  • natrolite
  • névé
  • niccolite
  • nivation
  • Noachian Epoch
  • nuee ardente
  • norite
  • nuee ardente

  • obsidian
  • ocean basin
  • ocean trench
  • ocean waves
  • oceanography
  • ocher
  • oil sands
  • Oligocene Epoch
  • olivine
  • Olympus Mons
  • onyx
  • oolith
  • oozes
  • opal
  • ore
  • Ordovician Period
  • orpiment
  • orthoclase
  • orthopyroxene

  • P wave
  • pahoehoe
  • Paleocene
  • paleoclimatology
  • paleomagnetism
  • Paleozoic Era
  • palimpsest
  • Pangea
  • pegmatite
  • Pele's hair
  • Pele's tears
  • peneplain
  • pentlandite
  • peridot
  • peridotite
  • permafrost
  • Permian Period
  • Phanerozoic
  • phlogopite
  • phlogopite
  • phlogopite
  • phreatic eruption
  • phyllite
  • piedmont
  • pillow lava
  • pingo
  • pit crater
  • pitchblende
  • placer deposits
  • plagioclase
  • plain
  • planetary features
  • plate tectonics
  • playa
  • Pleistocene Period
  • plinean eruption
  • Pliocene Epoch
  • pluton
  • polar wandering
  • porosity
  • porphyry
  • Precambrian
  • pressure ridges
  • primordial atmosphere
  • prospecting
  • Proterozoic
  • pumice
  • pyrite
  • pyroclastic
  • pyroclastic flow
  • pyrolusite
  • pyroxene
  • pyrrhotite

  • quartz
  • quartzite
  • Quaternary Period
  • quicksand

  • radiocarbon
  • raised beach
  • ray crater
  • realgar
  • reducing atmosphere
  • regolith
  • relief
  • reticulite
  • rhyolite
  • Richter scale
  • rift valley
  • rift zone
  • rille
  • ring, planetary
  • river
  • rock
  • ruby
  • rudaceous
  • rutile

  • S wave
  • salina
  • salt dome
  • salt flat
  • sand
  • sandstone
  • sapphire
  • scapolite
  • scheelite
  • schist
  • scoria
  • seafloor
  • seafloor spreading
  • secondary atmosphere
  • secondary crater
  • sediment
  • sedimentary rock
  • sedimentation
  • Sedgwick, Adam (1785–1873)
  • seismic wave
  • seismology
  • séracs
  • serpentine
  • shale
  • shatter cone
  • shield
  • shield volcano
  • sial
  • siderite
  • silica
  • silicates
  • sill
  • sillimanite
  • silt
  • Silurian Period
  • sima
  • sink hole
  • slate
  • Smith, William "Strata" (1769–1839)
  • smithsonite
  • Snowball Earth
  • soapstone
  • sodalite
  • soil erosion
  • solfatara
  • spatter
  • spatter and cinder cone
  • spatter rampart
  • sphalerite
  • spilite
  • spinel
  • spit
  • spodumene
  • spring
  • stack
  • stalactites and stalagmites
  • staurolite
  • Steno, Nicolaus (1638–1686)
  • stibnite
  • stishovite
  • stratigraphic column
  • stratigraphy
  • stratovolcano
  • stratum
  • stromatolite
  • Strombolian eruption
  • strontianite
  • Sudbury Crater
  • subduction
  • surface wave

  • taconite
  • talc
  • talus
  • tectonic
  • tectonic plate
  • tektite
  • tephra
  • terracing
  • tidal heating
  • till
  • topaz
  • tourmaline
  • travertine
  • Triassic Period
  • troctolite
  • troilite
  • tuff
  • turbidites
  • turquoise

  • unconformity
  • uniformitarianism
  • U-shaped valley
  • Utopia Planitia

  • valley
  • vein
  • vent
  • volcanic ash
  • volcanic block
  • volcanic bomb
  • volcanic dome
  • volcanic explosivity index (VEI)
  • volcanic gas
  • volcanism
  • volcano
  • vulcanian eruption

  • water cycle
  • watershed
  • Wegener, Alfred Lothar (1880–1930)
  • wolframite
  • wurtzite

  • young surface

  • zeolite
  • zircon