Refractory metal nuggets in different types of cosmic spherules
نویسندگان
چکیده
منابع مشابه
Oxygen Isotope Ratios of Large Cosmic Spherules: Carbonaceous and Ordinary
Introduction: Based on petrographic and ion probe investigation of small micrometeorites (150–250 μm), previous studies (e.g. [1]) have concluded that 99% of them should come from carbonaceous, possibly cometary parent bodies (CM/CR related). Our oxygen isotope measurements of 33 large (>500 μm) silicate type cosmic spherules (CS), using IR-laser fluorination/mass spectrometry, indicate that 30...
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ژورنال
عنوان ژورنال: Geochimica et Cosmochimica Acta
سال: 2014
ISSN: 0016-7037
DOI: 10.1016/j.gca.2014.01.026