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The Link Between the Local Bubble and Radioisotopic Signatures on Earth

Feige, J.; Breitschwerdt, Dieter; Wallner, Anton; Schulreich, Michael M.; Kinoshita, Norikazu; Paul, Michael; Dettbarn, C.; Fifield, L. Keith; Golser, Robin; Honda, Maki; Linnemann, U.; Matsuzaki, Hiroyuki; Merchel, Silke; Rugel, Georg; Steier, Peter; Tims, Stephen; Winkler, S. R.; Yamagata, Takeyasu


Traces of 2-3 Myr old 60Fe were recently discovered in a manganese crust and in lunar samples. We have found that this signal is extended in time and is present in globally distributed deep-sea archives. A second 6.5-8.7 Myr old signature was revealed in a manganese crust. The existence of the Local Bubble hints to a recent nearby supernova-activity starting 13 Myr ago. With analytical and numerical models generating the Local Bubble, we explain the younger 60Fe-signature and thus link the...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Conference paper
Source: Proceedings of the 14th International Symposium on the Nuclei of the Cosmos
DOI: 10.7566/JPSCP.14.010304
Access Rights: Open Access


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