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Title: Heating experiments of the Tagish Lake meteorite: Investigation of the effects of short-term heating on chondritic organics

Abstract

We present in this study the effects of short-term heating on organics in the Tagish Lake meteorite and how the difference in the heating conditions can modify the organic matter (OM) in a way that complicates the interpretation of a parent body's heating extent with common cosmothermometers. The kinetics of short-term heating and its influence on the organic structure are not well understood, and any study of OM is further complicated by the complex alteration processes of the thermally metamorphosed carbonaceous chondrites—potential analogues of the target asteroid Ryugu of the Hayabusa2 mission—which had experienced posthydration, short-duration local heating. In an attempt to understand the effects of short-term heating on chondritic OM, we investigated the change in the OM contents of the experimentally heated Tagish Lake meteorite samples using Raman spectroscopy, scanning transmission X-ray microscopy utilizing X-ray absorption near edge structure spectroscopy, and ultraperformance liquid chromatography fluorescence detection and quadrupole time of flight hybrid mass spectrometry. Our experiment suggests that graphitization of OM did not take place despite the samples being heated to 900 °C for 96 h, as the OM maturity trend was influenced by the heating conditions, kinetics, and the nature of the OM precursor, such as the presence of abundantmore » oxygenated moieties. Although both the intensity of the 1s-σ* exciton cannot be used to accurately interpret the peak metamorphic temperature of the experimentally heated Tagish Lake sample, the Raman graphite band widths of the heated products significantly differ from that of chondritic OM modified by long-term internal heating.« less

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [5];  [6];  [6];  [7];  [8];  [9];  [10];  [11];  [11]; ORCiD logo [12]
  1. ARES, NASA Johnson Space Center, Houston Texas 77058 USA; Department of Physical Sciences, The Open University, Walton Hall Milton Keynes MK7 6AA UK
  2. Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku Kyoto 606-8502 Japan
  3. Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogayaku Yokohama 240-8501 Japan
  4. ARES, NASA Johnson Space Center, Houston Texas 77058 USA
  5. Graduate School of Science, Tohoku University, Sendai Miyagi 980-8578 Japan
  6. Department of Geological Sciences, Jackson School of Geosciences, The University of Texas, Austin Texas 78712 USA
  7. Jacobs Engineering, Houston Texas 77058 USA
  8. Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road Berkeley California 94720 USA
  9. Department of Earth and Planetary Systems Science, Hiroshima University, Kagamiyama Higashi-Hiroshima Hiroshima 739-8526 Japan
  10. Department of Earth and Planetary Science, The University of Tokyo, Hongo Bunkyo-ku Tokyo 113-0033 Japan
  11. Institute of Materials Structure Science, High-Energy Accelerator Research Organization (KEK), 1-1 Oho Tsukuba Ibaraki 305-0801 Japan; Department of Materials Structure Science, SOKENDAI (The Graduate University for Advanced Studies), Hayama Kanagawa Prefecture 240-0193 Japan
  12. Department of Physical Sciences, The Open University, Walton Hall Milton Keynes MK7 6AA UK
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1530319
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Meteoritics and Planetary Science
Additional Journal Information:
Journal Volume: 54; Journal Issue: 1; Journal ID: ISSN 1086-9379
Publisher:
Wiley
Country of Publication:
United States
Language:
English

Citation Formats

Chan, Queenie H. S., Nakato, Aiko, Kebukawa, Yoko, Zolensky, Michael E., Nakamura, Tomoki, Maisano, Jessica A., Colbert, Matthew W., Martinez, James E., Kilcoyne, A. L. David, Suga, Hiroki, Takahashi, Yoshio, Takeichi, Yasuo, Mase, Kazuhiko, and Wright, Ian P. Heating experiments of the Tagish Lake meteorite: Investigation of the effects of short-term heating on chondritic organics. United States: N. p., 2018. Web. doi:10.1111/maps.13193.
Chan, Queenie H. S., Nakato, Aiko, Kebukawa, Yoko, Zolensky, Michael E., Nakamura, Tomoki, Maisano, Jessica A., Colbert, Matthew W., Martinez, James E., Kilcoyne, A. L. David, Suga, Hiroki, Takahashi, Yoshio, Takeichi, Yasuo, Mase, Kazuhiko, & Wright, Ian P. Heating experiments of the Tagish Lake meteorite: Investigation of the effects of short-term heating on chondritic organics. United States. doi:10.1111/maps.13193.
Chan, Queenie H. S., Nakato, Aiko, Kebukawa, Yoko, Zolensky, Michael E., Nakamura, Tomoki, Maisano, Jessica A., Colbert, Matthew W., Martinez, James E., Kilcoyne, A. L. David, Suga, Hiroki, Takahashi, Yoshio, Takeichi, Yasuo, Mase, Kazuhiko, and Wright, Ian P. Fri . "Heating experiments of the Tagish Lake meteorite: Investigation of the effects of short-term heating on chondritic organics". United States. doi:10.1111/maps.13193.
@article{osti_1530319,
title = {Heating experiments of the Tagish Lake meteorite: Investigation of the effects of short-term heating on chondritic organics},
author = {Chan, Queenie H. S. and Nakato, Aiko and Kebukawa, Yoko and Zolensky, Michael E. and Nakamura, Tomoki and Maisano, Jessica A. and Colbert, Matthew W. and Martinez, James E. and Kilcoyne, A. L. David and Suga, Hiroki and Takahashi, Yoshio and Takeichi, Yasuo and Mase, Kazuhiko and Wright, Ian P.},
abstractNote = {We present in this study the effects of short-term heating on organics in the Tagish Lake meteorite and how the difference in the heating conditions can modify the organic matter (OM) in a way that complicates the interpretation of a parent body's heating extent with common cosmothermometers. The kinetics of short-term heating and its influence on the organic structure are not well understood, and any study of OM is further complicated by the complex alteration processes of the thermally metamorphosed carbonaceous chondrites—potential analogues of the target asteroid Ryugu of the Hayabusa2 mission—which had experienced posthydration, short-duration local heating. In an attempt to understand the effects of short-term heating on chondritic OM, we investigated the change in the OM contents of the experimentally heated Tagish Lake meteorite samples using Raman spectroscopy, scanning transmission X-ray microscopy utilizing X-ray absorption near edge structure spectroscopy, and ultraperformance liquid chromatography fluorescence detection and quadrupole time of flight hybrid mass spectrometry. Our experiment suggests that graphitization of OM did not take place despite the samples being heated to 900 °C for 96 h, as the OM maturity trend was influenced by the heating conditions, kinetics, and the nature of the OM precursor, such as the presence of abundant oxygenated moieties. Although both the intensity of the 1s-σ* exciton cannot be used to accurately interpret the peak metamorphic temperature of the experimentally heated Tagish Lake sample, the Raman graphite band widths of the heated products significantly differ from that of chondritic OM modified by long-term internal heating.},
doi = {10.1111/maps.13193},
journal = {Meteoritics and Planetary Science},
issn = {1086-9379},
number = 1,
volume = 54,
place = {United States},
year = {2018},
month = {9}
}