laboratories (2) laboratory experiments (1) laboratory methods (390) laboratory reference materials -> materials standards (1) laboratory reflectance -> electromagnetic reflectance and emissivity (1) laboratory spectra -> electromagnetic reflectance and emissivity (1) lagoons -> lakes (4) laguna -> lakes (4) lahars (1) lake beds -> lakes (4) asphalt lakes -> basins (1) crater lakes -> lakes (4) dry lakes -> lakes (4) intermittent lakes -> lakes (4) intermittent oxbow lakes -> lakes (4) intermittent salt lakes -> lakes (4) lakes (4) oxbow lakes -> lakes (4) salt lakes -> lakes (4) land use and land cover (3) cadastral and legal land descriptions (1) legal land descriptions -> cadastral and legal land descriptions (1) landfills -> disposal sites (7) sanitary landfills -> disposal sites (7) land grants -> land parcels (1) boat landings -> hydrographic structures (2) land parcels (1) land partitioning systems -> cadastral and legal land descriptions (1) landscape -> land surface characteristics (7) landslide maps (1) -> landslides -> maps and atlases landslide preparedness (1) -> hazard preparedness -> landslides landslides (1) landslides -> physiographic features (401) landslide susceptibility assessment (1) landslide susceptibility maps (1) -> landslide susceptibility assessment -> maps and atlases land surface characteristics (7) land use and land cover (3) land use change (2) land use maps -> maps and atlases (248) lanthanide series elements (3) lanthanoid elements -> lanthanide series elements (3) lanthanum (153) boat launches -> hydrographic structures (2) lava -> volcanic rocks (28) lava flows -> volcanic activity (4) laws and regulations (1) leaching (analytical method) -> chemical analysis (310) lead (212) lead-210 dating -> radiometric dating (107) lead mines -> mine sites (167) leased areas (government) -> administrative areas (1) leased zones (government) -> administrative areas (1) cadastral and legal land descriptions (1) legal land descriptions -> cadastral and legal land descriptions (1) legal processes -> laws and regulations (1) legation buildings -> buildings (9) legislation -> laws and regulations (1) aquifer level -> groundwater level (2) ground-water level -> groundwater level (2) groundwater level (2) trophic level dynamics -> food web (1) lichens (1) lidar (4) life history -> population and community ecology (2) life sciences (5) visible light imaging (2) light stable-isotope analysis -> light stable isotope analysis (20) light stable isotope analysis (20) lignite resources -> coal resources (14) limekilns -> industrial sites (9) lineaments -> lineation (geologic) (3) lineation (geologic) (3) digital line graphs -> geospatial datasets (883) flight lines -> navigational data (4) survey flight lines -> navigational data (4) liquefaction (1) high-pressure liquid chromatography -> liquid chromatography (1) liquid chromatography (1) lists of publications -> catalogs and indexes (4) lithification -> geologic processes (66) lithium (139) lithologic maps (47) -> maps and atlases -> rocks and deposits lithology -> rocks and deposits (433) continental lithosphere (2) lithosphere (2) lithostratigraphy (4) llanos -> plains (1) bed load -> sediment transport (1) suspended load -> sediment transport (1) location measurement -> geolocation measurement (1) lodes (mineral) -> mineral deposit areas (338) lodges -> buildings (9) loess -> unconsolidated deposits (163) borehole logging (14) electrical resistivity logging (3) gamma-ray logging (1) well logging -> borehole logging (14) geological long-range inclined asdic -> sidescan sonar (1) lost rivers -> streams (7) lots (land parcels) -> land parcels (1) luminescence dating (1) optically-stimulated luminescence dating -> luminescence dating (1) lutetium (112)