Rare meteorites common in the Ordovician periodOPEN ACCESS
Philipp R. Heck, Birger Schmitz, William F. Bottke, Surya S. Rout, Noriko T. Kita, Anders Cronholm, Céline Defouilloy, Andrei Dronov & Fredrik Terfelt Nature Astronomy 1 Article number: 0035 (2017) doi:10.1038/s41550-016-0035 Published online: 23 January…
Cosmic-ray exposure ages of fossil micrometeorites from mid-Ordovician sediments at Lynna River, Russia
Meier MMM, Schmitz B, Lindskog A, Maden C and Wieler R (in press) Geochimica et Cosmochimica Acta Volume 125, 15 January 2014, Pages 338–350 LINK