Martian meteorite Tissint records unique petrogenesis among the depleted shergottites.

· by · in , , ,

Basu Sarbadhikari, A., Babu, E. V. S. S. K., Vijaya Kumar, T. and Chennaoui Aoudjehane, H.

Meteoritics & Planetary Science. doi: 10.1111/maps.12684
Version of Record online: 19 JUL 2016

LINK

“Tissint, a new unaltered piece of Martian volcanic materials, is the most silica-poor and Mg-Fe-rich igneous rock among the “depleted” olivine-phyric shergottites. Fe-Mg zoning of olivine suggests equilibrium growth (<0.1 °C h−1) in the range of Fo80–56 and olivine overgrowth (Fo55–18) through a process of rapid disequilibrium (~1.0–5.0 °C h−1). The spatially extended (up to 600 μm) flat-top Fe-Mg profiles of olivine indicates that the early-stage cooling rate of Tissint was slower than the other shergottites. The chemically metastable outer rim of olivine (

Related posts (automatically generated):

  1. Tracking the source of the enriched martian meteorites in olivine-hosted melt inclusions of two depleted shergottites, Yamato 980459 and Tissint
  2. Small melt inclusions can record bulk magma compositions: A planetary example from the Martian basalt (shergottite) Tissint.
  3. Multiple Olivine-Phyric Shergottite Stones of Differing Crystallization Age in the 2011 Tissint Meteorite Fall Imply Impact Excavation from a Long-Lived Depleted Magmatic Complex on Mars (Hint: Olympus Mons)
  4. Mineral chemistry of the Tissint meteorite: Indications of two-stage crystallization in a closed system.
  5. Convective activity in a Martian magma chamber recorded by P‐zoning in Tissint olivineOPEN ACCESS 
  6. Geochemically heterogeneous Martian mantle inferred from Pb isotope systematics of depleted shergottites
  7. Martian low-temperature alteration materials in shock-melt pockets in Tissint: Constraints on their preservation in shergottite meteorites
  8. Experimental investigation into the effects of oxidation during petrogenesis of the Tissint meteorite
  9. Complicated shock metamorphism deducing from shocked olivine in Tissint
  10. Hydrogen isotopic composition of the Martian mantle inferred from the newest Martian meteorite fall, Tissint.
Tags: , , , ,