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RE: K-T impact in early June?

Well, Wolfe has at least a 1 out of 12 chance of being correct!! :-)

But, as you note, given the greater number of days per year, it is better to 
think of "time of year" rather than "month". And even
there, keep in mind that growth cycles of plants will be different on a warmer 

This is one data point, and a highly speculative one at that.

In Science, accepting ambiguity and uncertainty are highly important. This is 
one of those occasions. Until more data can be
gathered to test this, we just don't know.

Thomas R. Holtz, Jr.
Email: tholtz@umd.edu   Phone: 301-405-4084
Office: Centreville 1216                        
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Fax: 301-314-9661               

Faculty Director, Science & Global Change Program, College Park Scholars
Fax: 301-314-9843

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        University of Maryland
                        College Park, MD 20742 USA

> -----Original Message-----
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] On Behalf Of 
> dinosaurtom2015@seznam.cz
> Sent: Tuesday, January 06, 2015 2:48 AM
> To: dinosaur@usc.edu
> Subject: K-T impact in early June?
> Good day to all list members,
> Denver Fowler was kind enough to notify me of this interesting study from
> 1991: http://www.nature.com/nature/journal/v352/n6334/abs/352420a0.html. Its 
> author, Jack A. Wolfe, comes with a possible "date"
> of K-T impact based on the fossilized flowers "frozen" by a nuclear winter 
> immediately after the impact. I'm aware that it is
> speculative and hypothetical, so I would like to ask what is the general 
> opinion of this research today? Has anyone ever continued
> this research or came up with something new? Are there alternate explanations 
> about these fossils (geological time, state of
> preservation etc.)? And also - can we talk about "modern" months like June in 
> the geologic past, when a single year had  about 20
> more than our holocene year? Thank you, Tom =