[meteorite-list] Neogene Supernovae Showered Earth with Radioactive Debris

[Paul]

Supernovae showered Earth with radioactive
debris. A series of massive supernova explosions near our
solar system showered the Earth with radioactive debris
between 3.2 and 1.7 million years ago,  Australian National
University, April 6, 2016
https://www.sciencedaily.com/releases/2016/04/160406133622.htm
http://phys.org/news/2016-04-proof-ancient-supernovae-zapped-earth.html

The papers are:

Wallner, A., J. Feige, N. Kinoshita, M. Paul, L. K. Fifield, R. Golser,
M. Honda, U. Linnemann, H. Matsuzaki, S. Merchel, G. Rugel, S. G.
Tims, P. Steier, T. Yamagata, and S. R. Winkler, 2016, Recent
near-Earth supernovae probed by global deposition of interstellar
radioactive 60Fe. Nature. vol. 532, no. 7597): 69-72. DOI: 
10.1038/nature17196
http://www.nature.com/nature/journal/v532/n7597/full/nature17196.html

Breitschwerdt, D., J. Feige, M. M. Schulreich, M. A. de. Avillez,
C. Dettbarn, and B. Fuchs, 2016, The locations of recent
supernovae near the Sun from modelling 60Fe transport
Nature. vol. 532, no. 7597, pp. 73–76 (07 April 2016) 
doi:10.1038/nature17424
http://www.nature.com/nature/journal/v532/n7597/full/nature17424.html

A related paper is:

Fields, B. D., and J. Ellis, 1999, On deep-ocean 60Fe as a fossil of
a near-earth supernova. New Astronomy. vol. 4, no 6,
September pp., Pages 419–430.
abstract at 
http://www.sciencedirect.com/science/article/pii/S1384107699000342
PDF file at http://cds.cern.ch/record/372621/files/9811457.pdf

Yours,

Paul H.
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