Olivine–gabbroic shergottites: A petrogenetic link between poikilitic and gabbroic shergottitesOPEN ACCESS 

· by · in ,

S. Benaroya, J. Gross

MAPS, Version of Record online: 16 June 2025

LINK (OPEN ACCESS)
PDF (OPEN ACCESS)

“Shergottites span a textural, mineralogical, and geochemical range, and finding links between the various petrologic and geochemical groups is of great interest as it provides insight into the conditions of the Martian interior. Here, we compare the texture, mineralogy, mineral chemistry, and geochemistry of REE-enriched intrusive shergottite groups, including poikilitic shergottites, olivine–gabbroic shergottites, and gabbroic shergottites. Due to the similarities of olivine–gabbroic samples to poikilitic and gabbroic shergottites, we suggest that the former may represent an intermediary petrologic type. We suggest a shared magmatic history for these sample groups via a shared stratified magma chamber. Thermodynamic modeling of the proposed shared magmatic history using Magma Chamber Simulator (MCS) and MELTS was able to reproduce the mineralogies and general crystallization histories of samples using a parental melt of bulk silicate mars (BSM) composition and the compositions of olivine–phyric shergottites LAR 06319 and NWA 6234.”

Related posts (automatically generated):

  1. Mantle source to near-surface emplacement of enriched and intermediate poikilitic shergottites in Mars
  2. Petrology and geochemistry of olivine‐phyric shergottites LAR 12095 and LAR 12240: Implications for their petrogenetic history on MarsOPEN ACCESS 
  3. Source and parental melts of poikilitic shergottites: Implications for martian magmatism
  4. Petrology and shock history of the first depleted-like poikilitic shergottite Asuka 12325OPEN ACCESS 
  5. New olivine morphologies in shergottites reveal complex thermal histories of martian magmas
  6. Petrogenesis of the Dar al Gani (DaG) 1.1 Ma ejection-paired olivine-phyric shergottites and implications for ~470 Ma Martian volcanismOPEN ACCESS 
  7. Nickel–manganese variability in olivine and Al‐in‐olivine thermometry for olivine‐phyric shergottites
  8. Olivine microstructure and thermometry in olivine-phyric shergottites Sayh al Uhaymir 005 and Dar al Gani 476OPEN ACCESS 
  9. Shock-induced H loss from pyroxene and maskelynite in a Martian meteorite and the mantle source δD of enriched shergottites
  10. Petrology of the enriched poikilitic shergottite Northwest Africa 10169: Insight into the martian interior
Tags: , , , ,