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- QAPF diagramClassification system for igneous rocks
- QEMSCANQEMSCAN is the name for an integrated automated mineralogy and petrography system providin
- Qiupa FormationGeological formation in Henan, China
- Quake (natural phenomenon)Surface shaking on interstellar bodies in general
- QuartzMineral made of silicon and oxygen
- QuartziteHard, non-foliated metamorphic rock
- Quasi-biennial oscillationThe quasi-biennial oscillation (QBO) is a quasiperiodic oscillation of the equatorial zona
- Quasi-Zenith Satellite SystemJapanese regional navigation satellite system
- QuaternaryThird and current period of the Cenozoic Era, from 2.58 million years ago to the present
- Quaternary glaciationSeries of alternating glacial and interglacial periods
- Quaternary scienceInter-disciplinary field of study focusing on the Quaternary period
- Queen Charlotte FaultActive transform fault in Canada and Alaska
- Queen Charlotte triple junctionPoint where the Pacific plate, the North American plate, and the Explorer plate meet
- Queen FormationThe Queen Formation is a geologic formation in southeastern New Mexico and west Texas. It
- Quelccaya Ice CapGlacier in Peru
- QuicksandColloid consisting of granular material and water
- Qumran CavesCaves in the West Bank