Kinetics in thermal evolution of Raman spectra of chondritic organic matter to evaluate thermal history of their parent bodies

· by · in , , , , ,

Kento Kiryu, Yoko Kebukawa, Motoko Igisu, Takazo Shibuya, Michael E. Zolensky, Kensei Kobayashi

Meteoritics & Planetary Science
Version of Record online:04 August 2020

LINK

“In order to establish kinetic expressions for Raman spectroscopic parameters of organic matter in chondritic meteorites with heating, a series of heating experiments (at 600–900 °C for 3–48 h) of the Murchison (CM2) meteorite was conducted. For comparison, several carbonaceous chondrites with various metamorphic degrees—Allende (CV3.2), Moss (CO3.6), Yamato (Y‐) 793321 (heated CM2), and Tagish Lake (ungrouped C2)—were also analyzed by the Raman spectrometer. Changes in the full width at half maximum of the D1 band (ΓD) of heated Murchison correlated well with temperature and time, and showed similar trends of chondrites with various metamorphic degrees. We obtained the kinetic expressions for the changes in ΓD by heating to estimate the time–temperature history of thermally metamorphosed type 3 chondrites and heated CM chondrites. Our results may also be useful for asteroids which are the targets of Hayabusa2 and OSIRIS‐REx missions.”

Related posts (automatically generated):

  1. Thermal History of Asteroid Parent Bodies Is Reflected in Their Metalorganic ChemistryOPEN ACCESS 
  2. Soluble Sulfur-Bearing Organic Compounds in Carbonaceous Meteorites: Implications for Chemical Evolution in Primitive Asteroids
  3. Heterogeneity within refractory organic matter from CM2 Carbonaceous Chondrites: Evidence from Raman spectroscopy
  4. Effects of minerals on metamorphism of organic matter during thermal processes in meteorite parent bodies
  5. Temperature constraints by Raman spectroscopy of organic matter in volatile-rich clasts and carbonaceous chondrites
  6. Thermal metamorphic history of Antarctic CV3 and CO3 chondrites inferred from the first- and second-order Raman peaks of polyaromatic organic carbon
  7. Profiling Murchison Soluble Organic Matter for New Organic Compounds with APPI- and ESI-FT-ICR MSOPEN ACCESS 
  8. Thermal history of type 3 chondrites from the antarctic meteorite collection determined by Raman spectroscopy of their polyaromatic carbonaceous matter
  9. Effects of Short-Term Thermal Alteration on Organic Matter in Experimentally-Heated Tagish Lake Observed by Raman Spectroscopy
  10. Exploring the link between molecular cloud ices and chondritic organic matter in laboratoryOPEN ACCESS 
Tags: , , , , , , , , ,