Skip to content

Research at St Andrews

Implications for behavior of volatile elements during impacts—Zinc and copper systematics in sediments from the Ries impact structure and central European tektites

Research output: Contribution to journalArticle

DOI

Open Access permissions

Open

Author(s)

Zuzana Rodovská, Tomáš Magna, Karel Žák, Chizu Kato, Paul S. Savage, Frédéric Moynier, Roman Skála, Josef Ježek

School/Research organisations

Abstract

Moldavites are tektites genetically related to the Ries impact structure, located in Central Europe, but the source materials and the processes related to the chemical fractionation of moldavites are not fully constrained. To further understand moldavite genesis, the Cu and Zn abundances and isotope compositions were measured in a suite of tektites from four different substrewn fields (South Bohemia, Moravia, Cheb Basin, Lusatia) and chemically diverse sediments from the surroundings of the Ries impact structure. Moldavites are slightly depleted in Zn (~10–20%) and distinctly depleted in Cu (>90%) relative to supposed sedimentary precursors. Moreover, the moldavites show a wide range in δ66Zn values between 1.7 and 3.7‰ (relative to JMC 3-0749 Lyon) and δ65Cu values between 1.6 and 12.5‰ (relative to NIST SRM 976) and are thus enriched in heavy isotopes relative to their possible parent sedimentary sources (δ66Zn = −0.07 to +0.64‰; δ65Cu = −0.4 to +0.7‰). In particular, the Cheb Basin moldavites show some of the highest δ65Cu values (up to 12.5‰) ever observed in natural samples. The relative magnitude of isotope fractionation for Cu and Zn seen here is opposite to oxygen-poor environments such as the Moon where Zn is significantly more isotopically fractionated than Cu. One possibility is that monovalent Cu diffuses faster than divalent Zn in the reduced melt and diffusion will not affect the extent of Zn isotope fractionation. These observations imply that the capability of forming a redox environment may aid in volatilizing some elements, accompanied by isotope fractionation, during the impact process. The greater extent of elemental depletion, coupled with isotope fractionation of more refractory Cu relative to Zn, may also hinge on the presence of carbonyl species of transition metals and electromagnetic charge, which could exist in the impact-induced high-velocity jet of vapor and melts.
Close

Details

Original languageEnglish
Pages (from-to)2178-2192
JournalMeteoritics & Planetary Science
Volume52
Issue number10
Early online date27 Jul 2017
DOIs
Publication statusPublished - Oct 2017

    Research areas

  • Zinc isotopes, Copper isotopes, Tektites, Ries crater, Ries area sediments, Isotope fractionation, Impact, Volatile loss

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Isotopic fractionation of zirconium during magmatic differentiation and the stable isotope composition of the silicate Earth

    Inglis, E., Moynier, F., Creech, J., Deng, Z., Day, J., Teng, F-Z., Bizzarro, M., Jackson, M. & Savage, P., 1 Apr 2019, In : Geochimica et Cosmochimica Acta. 250, p. 311-323 13 p.

    Research output: Contribution to journalArticle

  2. Titanium isotopes as a tracer for the plume or island arc affinity of felsic rocks

    Deng, Z., Chaussidon, M., Savage, P., Robert, F., Pik, R. & Moynier, F., 3 Jan 2019, In : Proceedings of the National Academy of Sciences of the United States of America. Advance Article

    Research output: Contribution to journalArticle

  3. Origin and significance of Si and O isotope heterogeneities in Phanerozoic, Archean, and Hadean zircon

    Trail, D., Boehnke, P., Savage, P. S., Liu, M-C., Miller, M. & Bindeman, I., 9 Oct 2018, In : Proceedings of the National Academy of Sciences of the United States of America. 115, 41, p. 10287-10292 6 p.

    Research output: Contribution to journalArticle

  4. Copper Isotopes

    Savage, P. S., 28 Jun 2018, Encyclopedia of Geochemistry. White, W. (ed.). Springer

    Research output: Chapter in Book/Report/Conference proceedingEntry for encyclopedia/dictionary

  5. The isotope geochemistry of zinc and copper

    Moynier, F., Vance, D., Fujii, T. & Savage, P., 31 Jan 2017, In : Reviews in Mineralogy and Geochemistry. 82, 1, p. 543-600 58 p.

    Research output: Contribution to journalArticle

Related by journal

  1. A new high-precision 40Ar/39Ar age for the Rochechouart impact structure: at least 5 Ma older than the Triassic–Jurassic boundary

    Cohen, B. E., Mark, D. F., Lee, M. R. & Simpson, S. L., 2 Aug 2017, In : Meteoritics & Planetary Science. 52, 8, p. 1600-1611 12 p.

    Research output: Contribution to journalArticle

  2. The Stubenberg meteorite—An LL6 chondrite fragmental breccia recovered soon after precise prediction of the strewn field

    Bischoff, A., Barrat, J-A., Bauer, K., Burkhardt, C., Busemann, H., Ebert, S., Gonsior, M., Hakenmüller, J., Haloda, J., Harries, D., Heinlein, D., Hiesinger, H., Hochleitner, R., Hoffmann, V., Kaliwoda, M., Laubenstein, M., Maden, C., Meier, M. M. M., Morlok, A., Pack, A. & 6 othersRuf, A., Schmitt-Kopplin, P., Schönbächler, M., Steele, R. C. J., Spurný, P. & Wimmer, K., 2 Aug 2017, In : Meteoritics & Planetary Science. 52, 8, p. 1683-1703

    Research output: Contribution to journalArticle

  3. Homogeneous distribution of Fe isotopes in the early solar nebula

    Wang, K., Moynier, F., Barrat, J-A., Zanda, B., Paniello, R. C. & Savage, P. S., 1 Mar 2013, In : Meteoritics & Planetary Science. 48, 3, p. 354-364 11 p.

    Research output: Contribution to journalArticle

  4. THE STAC FADA "IMPACT EJECTA" LAYER: NOT WHAT IT SEEMS

    Osinski, G. R., Preston, L., Ferriere, L., Prave, T., Parnell, J., Singleton, A. & Pickersgill, A. E., Jul 2011, In : Meteoritics & Planetary Science. 46, p. A181-A181 1 p.

    Research output: Contribution to journalAbstract

ID: 250568637