1 Ocak 2022 Dergi makalesi Açık Erişim

Young, J. M.; Glotch, T. D.; Yesiltas, M.; Hamilton, V. E.; Breitenfeld, L. B.; Bechtel, H. A.; Corder, S. N. Gilbert; Yao, Z.

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        "affiliation": "SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA", 
        "name": "Young, J. M."
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      {
        "affiliation": "SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA", 
        "name": "Glotch, T. D."
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      {
        "affiliation": "Kirklareli Univ, Fac Aeronaut & Space Sci, Kirklareli, Turkey", 
        "name": "Yesiltas, M."
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      {
        "affiliation": "Southwest Res Inst, Boulder, CO USA", 
        "name": "Hamilton, V. E."
      }, 
      {
        "affiliation": "SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA", 
        "name": "Breitenfeld, L. B."
      }, 
      {
        "affiliation": "Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA", 
        "name": "Bechtel, H. A."
      }, 
      {
        "affiliation": "Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA", 
        "name": "Corder, S. N. Gilbert"
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      {
        "name": "Yao, Z."
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    "description": "Mid-infrared (MIR) spectroscopy has been used with great success to quantitatively determine the mineralogy of geologic samples. It has been employed in a variety of contexts from determining bulk composition of powdered samples to spectroscopic imaging of rock thin sections via micro-Fourier transform infrared (micro-FTIR) imaging spectroscopy. Recent advances allow for IR measurements at the nanoscale. Near field nanoscale infrared imaging and spectroscopy with a broadband source (nano-FTIR) enable understanding of the spatial relationships between compositionally distinct materials within a sample. This will be of particular use when analyzing returned samples from Bennu and Ryugu, which are thought to be compositionally like CI or CM1/2 carbonaceous chondrites. Returned samples will likely contain olivine/pyroxene chondrules that have been transformed into hydrous phyllosilicates, sulfides, carbonates, and other alteration phases. The use of near-field infrared techniques to probe the boundaries between once pristine chondrules and alteration phases at the nanoscale is a novel approach to furthering our understanding of the compositional evolution of carbonaceous asteroids and the processes that drive their evolution. Here we report the results of nano-FTIR spectroscopy and imaging measurements performed on the carbonaceous chondrite Allan Hills (ALH) 83100 (CM1/2). We show with nanoscale resolution that spatially resolved Fe-Mg variations exist within the phyllosilicates around a chondrule rim. We also present effects of crystal orientation on the nano-FTIR spectra to account for the spectral differences between the meteorite and mineral spectra.", 
    "doi": "10.1029/2021JE007166", 
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    "journal": {
      "issue": "5", 
      "title": "JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS", 
      "volume": "127"
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    "publication_date": "2022-01-01", 
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      "title": "Dergi makalesi", 
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    "science_branches": [
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    "title": "Nano-FTIR Investigation of the CM Chondrite Allan Hills 83100"
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