Kamo et al. (2011)
Also: Kamo et al. 2011
U–Pb ages of shocked zircon grains link distal K–Pg boundary sites in Spain and Italy with the Chicxulub impact
Kamo, S. L., Lana, C., & Morgan, J. V. (2011). U–Pb ages of shocked zircon grains link distal K–Pg boundary sites in Spain and Italy with the Chicxulub impact. Earth and Planetary Science Letters, 310(3), 401-408. Link to PDF
doi:10.1016/j.epsl.2011.08.031
References
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.