[{"n": "Igneous rock", "u": "/e/geology-and-earth-science/igneous-rock/", "s": "One of the three main rock types, formed from cooling magma or lava."}, {"n": "Impact crater", "u": "/e/geology-and-earth-science/impact-crater/", "s": "A depression formed by hypervelocity impact of a smaller object."}, {"n": "Internal structure of Earth", "u": "/e/geology-and-earth-science/internal-structure-of-earth/", "s": "Earth's interior is layered by chemistry and mechanical behavior."}, {"n": "Kaolinite", "u": "/e/geology-and-earth-science/kaolinite/", "s": "A widely used clay mineral in porcelain and industry."}, {"n": "Karst", "u": "/e/geology-and-earth-science/karst/", "s": "A topography formed from dissolution of soluble carbonate rocks."}, {"n": "Landslide", "u": "/e/geology-and-earth-science/landslide/", "s": "Mass wasting events driven by gravity and slope instability."}, {"n": "Lithosphere", "u": "/e/geology-and-earth-science/lithosphere/", "s": "The rigid outer shell of Earth, comprising the crust and lithospheric mantle."}, {"n": "Magma", "u": "/e/geology-and-earth-science/magma/", "s": "Molten rock beneath Earth's surface, source of all igneous rocks."}, {"n": "Marble", "u": "/e/geology-and-earth-science/marble/", "s": "Metamorphic rock prized for sculpture and architecture."}, {"n": "Metamorphic rock", "u": "/e/geology-and-earth-science/metamorphic-rock/", "s": "Rock transformed by heat and pressure without melting."}, {"n": "Mid-ocean ridge", "u": "/e/geology-and-earth-science/mid-ocean-ridge/", "s": "The global mid-oceanic ridge system is the longest mountain range on Earth."}, {"n": "Mineral", "u": "/e/geology-and-earth-science/mineral/", "s": "Naturally occurring solid with defined composition and crystal structure."}, {"n": "Mineralogy", "u": "/e/geology-and-earth-science/mineralogy/", "s": "Scientific study of minerals, their properties, and crystal structures."}, {"n": "Moraine", "u": "/e/geology-and-earth-science/moraine/", "s": "Accumulation of glacial debris carried by ice."}, {"n": "Ore", "u": "/e/geology-and-earth-science/ore/", "s": "Natural rock containing economically viable minerals or metals."}, {"n": "Volcano", "u": "/e/geology-and-earth-science/volcano/", "s": "A vent in a planet's crust that erupts magma."}]