Sentences with phrase «bolide impact»

For those who decry the politicization of the science, I'd suggest that were we faced by a 90 % chance of a bolide impact in 50 years, the political fissures in society would be of earthquake proportions within 10!

In the case of the End - Cretaceous extinction it was a giant bolide impact.

Numerous indicators of volcanic activity at the P - T boundary are present, though they are similar to bolide impact indicators, including iridium deposits.

This ongoing debate over the ultimate cause of the Younger Dryas has led to a search for other potential forcing mechanisms, such as an abrupt discharge of meltwater to the Arctic Ocean (Tarasov and Peltier, 2005) and a bolide impact (Firestone et al., 2007).

The Melott et al. study thus lays out a test for the occurrence of a Younger Dryas bolide impact, constrained by observations of the recent Tunguska impact.

Furthermore, it has yet to be demonstrated how a short - lived event, such as a bolide impact (or abrupt Arctic meltwater discharge, i.e., Tarasov and Peltier, 2005), can force a millennia - long cold event when state - of - the - art climate models require a continuous freshwater forcing for the duration of the AMOC reduction (e.g., Liu et al., 2009).

We introduce a carbon cycle model that would explain the PETM by global warming following a bolide impact, leading to the oxidation of terrestrial organic carbon stores built up during the late Paleocene.

The strata from this time shows an iridium anomaly (up to 285 parts per trillion) and a fern spore spike, suggesting that a bolide impact was the cause.

If the bolide impacted the southern Laurentide margin near the Great Lakes, it could have opened the eastern outlet of Lake Agassiz, but Great Lake till sequences are not disturbed (e.g., Mickelson et al., 1983).

And no, not THE dominant player when one considers events like large bolide impacts and other extraordinary events which are not happening today and therefore do not provide relevant, direct comparisons.

Not exact matches

ELE = 100 Million Megatons = the impact energy of the bolide that killed the dinosaurs.