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KREEP, an acronym built from the letters K (the atomic symbol for potassium ), REE ( rare-earth elements) and P (for phosphorus ), is a geochemical component of some lunar impact breccia and basaltic rocks.
KREEP, a suite of lunar lavas, relatively enriched in certain elements, that were identified in the analysis of rock samples that Apollo astronauts brought back from the Moon. The elements include potassium (chemical symbol K), rare-earth elements, and phosphorus (P), from which the acronym KREEP.
- James D. Burke
Apr 27, 2011 · KREEP is an acronym for potassium, rare earth elements, and phosphorus, the last to solidify in the lunar crust. It occurs where the Moon formed from a molten magma ocean and cooled. It is important for geology and geochronology of the Moon, as it contains thorium, a radioactive element that reveals its age.
KREEP is an acronym of K (potassium), R (rare), E (Earth), E (element), and P (phosphorus), a chemical formula for a moon rock that contains these elements. It was discovered by the Apollo astronauts and is a term for the Apollo 11 Moon landing site. Learn more about the origin and meaning of other lunar terms and definitions.
Abstract. KREEP is a lunar material having very high concentrations of incompatible elements; its name is an acronym for the incompatibles K, rare-earth elements (REE), and P. Although a few pristine (endogenously igneous) KREEPy samples were returned from the Apollo 15 and 17 sites, most KREEPy samples are polymict breccias.
- Paul H. Warren, John T. Wasson
- 1979
KREEP, an acronym built from the letters K, REE and P, is a geochemical component of some lunar impact breccia and basaltic rocks. Its most significant feature is somewhat enhanced concentration of a majority of so-called "incompatible" elements and the heat-producing elements, namely radioactive uranium, thorium, and potassium.
KREEP is a lunar material having very high concentrations of incompatible elements; its name is an acronym for the incompatibles K, rare-earth elements (REE), and P. Although a few pristine (endogenously igneous) KREEPy samples were returned from the Apollo 15 and 17 sites, most KREEPy samples are polymict breccias.
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