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Data sets Publications Expeditions Thesaurus

Economic Geology

AMRAP, chemical industry, coal mines, companies, cutoff grade, development, discoveries, economics, energy sources, evaluation, geology, industry, Law of the Sea, legislation, licensing, metal ores, metallogenic epochs, metallogenic provinces, metallogeny, mineral deposits,,

Engineering Geology

bridges, accelerograms, accelerometers, airports, anchors, artificial islands, aseismic design, asperities, backfill, berms, clays, blasting, blowouts, breakwaters, concrete, civil engineering, cohesionless materials, cohesive materials, compactness, conductive materials, co,

Environmental Geology

acid mine drainage, airports, atmosphere, bioaccumulation, bioassays, bioavailability, chemical waste, Clean Air Act, Clean Water Act, conservation, constructed wetlands, CREAMS, DDT, detergents, drought, ecology, endangered species, energy conservation, engineering geolog,


absolute age, absorption, activity, adsorption, advection, alanine, alkalinity, alumina, ammonia compound, ammonium, ammonium ion, anions, aqueous solutions, atmosphere, background level, basin analysis, bicarbonate ion, biochemistry, biogeochemical methods, buffers, calcium,


absolute age, cosmochronology, dates, geochemistry, isochrons, metamorphic rocks, exposure age, epimerization, metamorphism, fission-track dating, meteor craters, biochronology, chronology, cation-ratio dating, event stratigraphy, hydration of glass, lichenometry, optical,


avalanches, aerial photography, aggradation, alluvial fans, alluvial plains, alpine-type features, arid environment, barchans, arroyos, barrier islands, astroblemes, badlands, barrier beaches, beaches, bars, bays, beach profiles, beach ridges, berms, bedforms, benches, blowou,


adiabatic demagnetization, alpha quartz, alternating field demagnetization, anvil cells, atmosphere, backscattering, Born approximation, chemical demagnetization, core, crust, deep seismic sounding, deformation, demagnetization, dilatancy, direct problem, dynamos, Earth,


ground water, aquifers, hydrochemistry, artesian waters, hydrologic cycle, hydrology, hydrosphere, imbibition, hydrogeological controls, flowmeters, dolines, dye tracers, fluorimetry, ground-water provinces, hydrogeologic maps, hydrological methods, infiltrometers, lysime,


accessory minerals, banded structures, bibliography, catalogs, crystallography, education, fluid inclusions, homogenization, igneous rocks, image analysis, inclusions, interlaboratory comparison, intrusions, lava, lexicons, magmas, melts, metamorphic rocks, metamorphism, me,

Marine Geology

bottom features, continental rise, environmental geology, geophysical methods, Alvin, continental shelf, continental slope, marine drilling, geology, bathymetry, benthonic taxa, levees, epicontinental seas, CYANA, Deep Sea Drilling Project, Glomar Challenger, MANOP, marin,


atomic packing, bibliography, catalogs, clay mineralogy, collecting, collections, crystal chemistry, crystal growth, crystal structure, crystal zoning, crystallography, decrepitation, goniometry, lexicons, microscope methods, mineral data, mineral inventory, minerals, opti,


bottom features, abyssal plains, convection, air-sea interface, Alvin, AMCOR, continental shelf, continental slope, bottom water, catalogs, bibliography, Continental Offshore Stratigraphic Test, bathymetry, boundary layer, carbonate compensation depth, CYANA, Deep Sea Dr,


biologic evolution, biogeography, fossils, catalogs, bibliography, floral provinces, biodiversity, cladistics, geomicrobiology, fossilization, floral studies, chemosynthesis, miscellanea, electron microscopy, flowers, leaves, micropaleontology, fossil record, holotypes, mod,


adaptation, adaptive radiation, anatomy, bibliography, biocenoses, biochronology, biodiversity, biogeographic maps, biogeography, biologic evolution, biometry, biostratigraphy, bipedalism, bones, casts, catalogs, chemical fossils, cladistics, collecting, collections, contine,

Sedimentary Petrology

bibliography, catalogs, clay mineralogy, diagenesis, domains, flume studies, glossaries, lexicons, marine geology, microscope methods, oceanography, petrology, sedimentary rocks, sedimentary structures, sedimentation, sedimentology, sediments, shape analysis,


410-km discontinuity, 670-km discontinuity, accelerograms, accelerometers, acoustical emissions, acoustical properties, acoustical waves, aftershocks, Airy waves, amplitude, amplitude distortion, anelastic materials, anelasticity, anisotropy, arrival time, attenuation, b,


biogeography, biomarkers, allostratigraphy, aminostratigraphy, biostratigraphy, continental drift, catalogs, bibliography, Continental Offshore Stratigraphic Test, cross sections, correlation, biozones, chemostratigraphy, chronostratigraphy, cyclostratigraphy, diachroni,

Structural Geology

allochthons, alpine-type features, bibliography, catalogs, faults, folds, foliation, fractures, geology, glossaries, inliers, lexicons, lineation, maps, orogeny, relaxation, stereographic projection, structural analysis, swells, tectonics,

Surficial Geology

geology, landform description, shallow aquifers, shallow depth, soils, surface textures, geomorphology, surficial geology maps,


asthenosphere, bibliography, continental drift, continental margin, convection, convection currents, core, core-mantle boundary, crust, crustal thinning, deformation, Earth, Earth tides, expanding Earth, faults, folds, foliation, fractures, geophysics, geosynclines, geotecto,