Whitman Thaw
Search results
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.
Type the text you hear or see. Not your computer? Use a private browsing window to sign in. Learn more about using Guest mode. Next. Create account.
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
Dec 9, 2022 · Nature Communications - Ancient (~3.9 Ga) KREEP-free basalts were sourced from a relatively cool and shallow pyroxene-rich mantle distinct from later-erupted (<3.8 Ga) KREEP-bearing basalts,...
- Yash Srivastava
Oct 19, 2021 · Young mare basalts—mainly distributed in a region rich in potassium, rare-earth elements and phosphorus (KREEP) in Oceanus Procellarum, called the Procellarum KREEP Terrane (PKT) 4 —were ...
- Heng-Ci Tian, Hao Wang, Yi Chen, Wei Yang, Qin Zhou, Chi Zhang, Hong-Lei Lin, Chao Huang, Shi-Tou Wu...
- 2021
The Chang'E-5 basalt, the youngest basalt dated on the Moon so far, formed 2.03 billion years ago, originated from a depleted mantle source with a KREEP component less than 0.5% weight percent. In other words, KREEP is “missing” in the origin of the Chang’E-5 basalts. Figure 3.
Nov 11, 2004 · The ages of KREEP-rich samples are, however, confined to the earliest periods of lunar magmatism between 3.8 and 4.6 billion years (Gyr) ago8,9, providing no physical evidence that KREEP is ...
