1 Ocak 2022 Dergi makalesi Açık Erişim

Yesiltas, Mehmet; Kebukawa, Yoko; Glotch, Timothy D.; Zolensky, Michael; Fries, Marc; Aysal, Namik; Tukel, Fatma S.

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{
  "@context": "https://schema.org/", 
  "@id": 253699, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Kirklareli Univ, Fac Aeronaut & Space Sci, TR-39100 Kirklareli, Turkey", 
      "name": "Yesiltas, Mehmet"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan", 
      "name": "Kebukawa, Yoko"
    }, 
    {
      "@type": "Person", 
      "affiliation": "SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11790 USA", 
      "name": "Glotch, Timothy D."
    }, 
    {
      "@type": "Person", 
      "affiliation": "Johnson Space Ctr, NASA, Astromat Res & Explorat Sci, Houston, TX 77058 USA", 
      "name": "Zolensky, Michael"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Johnson Space Ctr, NASA, Astromat Res & Explorat Sci, Houston, TX 77058 USA", 
      "name": "Fries, Marc"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Univ Cerrahpasa, Dept Geol Engn, TR-34320 Istanbul, Turkey", 
      "name": "Aysal, Namik"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Univ Cerrahpasa, Dept Geol Engn, TR-34320 Istanbul, Turkey", 
      "name": "Tukel, Fatma S."
    }
  ], 
  "datePublished": "2022-01-01", 
  "description": "Ungrouped carbonaceous chondrites are not easily classified into one of the well-established groups due to compositional/petrological differences and geochemical anomalies. Type 2 ungrouped carbonaceous chondrites represent a very small fraction of all carbonaceous chondrites. They can potentially represent different aspects of asteroids and their regolith material. By conducting a multitechnique investigation, we show that Queen Alexandra Range (QUE) 99038 and Elephant Moraine (EET) 83226 do not resemble type 2 carbonaceous chondrites. QUE 99038 exhibits coarse-grained matrix, Fe-rich rims on olivines, and an apparent lack of tochilinite, suggesting that QUE 99038 has been metamorphosed. Its polyaromatic organic matter structures closely resemble oxidized CV3 chondrites. EET 83226 exhibits a clastic texture with high porosity and shows similarities to CO3 chondrites. It consists of numerous large chondrules with fine-grained rims that are often fragmented and discontinuous and set within matrix, suggesting a formation mechanism for the rims in a regolith environment. The kind of processes that can result in such chemical compositions as in QUE 99038 and EET 83226 is currently not fully known and clearly presents a conundrum. Tarda is a highly friable carbonaceous chondrite with close resemblance to Tagish Lake (ungrouped C2 chondrite). It comprises different types of chondrules (some with Fe-rich rims), framboid magnetite, sulfides, carbonates, and phyllosilicate- and carbon-rich matrix, and is consistent with being an ungrouped C2 chondrite.", 
  "headline": "Compositional and spectroscopic investigation of three ungrouped carbonaceous chondrites", 
  "identifier": 253699, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Compositional and spectroscopic investigation of three ungrouped carbonaceous chondrites", 
  "url": "https://aperta.ulakbim.gov.tr/record/253699"
}