In this section
@article{Jolley:2010:10.1130/G31034.1,
author = {Jolley, D and Gilmour, I and Gurov, E and Kelley, S and Watson, J},
doi = {10.1130/G31034.1},
journal = {Geology},
pages = {835--838},
title = {Two large meteorite impacts at the Cretaceous-Paleogene boundary},
url = {http://dx.doi.org/10.1130/G31034.1},
volume = {38},
year = {2010}
}
TY - JOUR
AB - The end-Cretaceous mass extinction has been attributed by most to a single asteroid impact at Chicxulub on the Yucatán Peninsula, Mexico. The discovery of a second smaller crater with a similar age at Boltysh in the Ukraine has raised the possibility that a shower of asteroids or comets impacted Earth close to the Cretaceous-Paleogene (K-Pg) boundary. Here we present palynological and δ13C evidence from crater-fi ll sediments in the Boltysh impact crater. Our analyses demonstrate that a post-impact fl ora, formed on the ejecta layer, was in turn devastated by the K-Pg event. The sequence of fl oral recovery from the K-Pg event is directly comparable with that in middle North America. We conclude that the Boltysh crater predated Chicxulub by ~2–5 k.y., a time scale that constrains the likely origin of the bodies that formed the two known K-Pg craters.
AU - Jolley,D
AU - Gilmour,I
AU - Gurov,E
AU - Kelley,S
AU - Watson,J
DO - 10.1130/G31034.1
EP - 838
PY - 2010///
SP - 835
TI - Two large meteorite impacts at the Cretaceous-Paleogene boundary
T2 - Geology
UR - http://dx.doi.org/10.1130/G31034.1
VL - 38
ER -