Dating Asteroid--and Dinosaur Extinction

choi

Matt Ridley, Dear Darwin: When the Sky Fell on Evolution; With a revised date for an asteroid collision, the fate of the dinosaurs suddenly becomes clearer. Wall Street Journal, Feb 16, 2013.
http://online.wsj.com/article/SB ... 98022042998786.html
("Dr. Renne was able to establish that the two events [both a mammoth asteroid hitting the earth and extinction of dinosaurs] coincided, in his words, to within 'a gnat's eyebrow': to within 11,000 years of each other")

My comment:
(a) Skip the first several paragraphs and start reading at the paragaph that begins with "Don't worry, it doesn't involve Noah."
(b) Renne PR et al, Time Scales of Critical Events Around the Cretaceous-Paleogene Boundary. Science, 339: 684-687 (Feb 8, 2013).
http://www.sciencemag.org/content/339/6120/684.short
(c) Paul R Renne. Berkeley Geochronology Center (BGC), UC Berkeley, undated.  
http://www.bgc.org/people/each_person/renne_r.html