Chromium isotope anomaly in an impactite sample from the El'gygytgyn structure, Russia: Evidence for a ureilite projectile?

Funding

Funding for the El'gygytgyn drilling project was provided by the International Continental Scientific Drilling Program (ICDP), the U.S. National Science Foundation (NSF), the German Federal Ministry of Education and Research (BMBF), Alfred Wegener Institute (AWI) and GeoForschungsZentrum Potsdam (GFZ), the Russian Academy of Sciences Far East Branch (RAS FEB), the Russian Foundation for Basic Research (RFBR), and the Austrian Federal Ministry of Science and Research (BMWF). The Russian GLAD 800 drilling system was developed and operated by DOSECC Inc., and the downhole logging was performed by the ICDP-OSG. The current work was supported by the Austrian Science Foundation (FWF), project P21821-N19. We thank E. Gurov (Kiev) for many years of advice and supply of some surface samples from El'gygytgyn, and L. Pittarello and D. Mader (both University of Vienna) for assistance with the petrography and geochemistry of the drill core samples discussed in this article. We are grateful to S. Goderis for discussions, to B. Schmitz and A. Shukolyukov for constructive and helpful reviews, and to W. U. Reimold for editorial comments.