Genesis and timing of KREEP-free lunar Mg-suite magmatism indicated by the first norite meteorite Arguin 002OPEN ACCESS 

· by · in ,

Zilong Wang, Wei Tian, Wei-RZ Wang, Tabb C. Prissel, Yankun Di, Yuqi Qian, Ping-Ping Liu, Wenzhe Fa & Ao Su

Communications Earth & Environment
Volume 6, article number 170, Published: 01 March 2025

LINK (OPEN ACCESS)
PDF (OPEN ACCESS)

“There is ongoing debate about whether lunar magnesian suite (Mg-suite) magmatism was a global, nearly synchronous event with a genetic link to potassium, rare-earth element and phosphorus components (KREEP). Arguin 002, the first whole-rock meteorite classified as a lunar norite, offers a unique opportunity to explore the genesis and timing of Mg-suite rocks. Here we investigated the petrology, mineralogy, geochemistry, and chronology of Arguin 002, revealing it to be an evolved, KREEP-free Mg-suite rock with chemical similarities to atypical Apollo-15 Fe-norites. It likely formed through plutonic magmatism originating from low-degree partial melting of a deep, KREEP-free mantle source and has a 207Pb/206Pb age of 4341.5 ± 9.3 Ma. The potential source of Arguin 002 is within the South Pole-Aitken basin, near the Chang’e-6 landing site. These findings indicate that Mg-suite magmatism was a global and nearly synchronous event, potentially driven by rapid global mantle overturn.”

Related posts (automatically generated):

  1. Timing of lunar Mg-suite magmatism constrained by SIMS U-Pb dating of Apollo norite 78238OPEN ACCESS 
  2. Mare basalt meteorites, magnesian-suite rocks and KREEP reveal loss of zinc during and after lunar formation
  3. Geochemistry of lunar meteorite Northwest Africa 11962 and its potential source region/crater in the Procellarum KREEP terraneOPEN ACCESS 
  4. Magmatic evolution of KREEP-free lunar meteorite Asuka-881757 inferred from sector-zoned clinopyroxene, pyroxene symplectites, and thermodynamic modeling
  5. A rock fragment related to the magnesian suite in lunar meteorite Allan Hills (ALHA) 81005
  6. Formation age of lunar Lalande crater and its implications for the source region of the KREEP-rich meteorite Sayh al Uhaymir 169
  7. KREEP basalt petrogenesis: Insights from 15434,181
  8. New lunar meteorite NWA 10986: A mingled impact melt breccia from the highlands—A complete cross section of the lunar crust
  9. Insights on the volcanic and impact histories of the lunar nearside from the petrology, geochemistry, and geochronology of the Calcalong Creek lunar regolith breccia meteoriteOPEN ACCESS 
  10. Lunar meteorite Northwest Africa 11962: A regolith breccia containing records of titanium‐rich lunar volcanism and the high alkali suiteOPEN ACCESS 
Tags: , , , , ,