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. 2019 Feb 28;9:3169. doi: 10.1038/s41598-019-39357-1

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Oxygen isotope composition of the Zag clast shown in relation to various chondrite groups (a), IDPs and cometary dust particles (b). Ordinary chondrite (H, L, LL) data from Clayton et al.⁵⁵, Carbonaceous chondrite (CI, CM, CR) data from Clayton and Mayeda⁵⁶, Tagish Lake data from Brown et al.⁴⁴, comet Wild2 particle data from McKeegan et al.⁵⁷, IDP data from Aléon et al.⁵⁸. Zag clast (i): this study, Zag clast (ii): analysis of the same clast reported by Zolensky et al.¹³. TFL: terrestrial fractionation line. The errors are smaller than the symbol sizes.