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RE: K-T impact in early June?
In the spirit of determining the age of events long past...I'm reminded of
James Ussher (1581–1656)
Anglican Archbishop of Armagh and Primate of All Ireland [Earth was created
Sunday 23 October 4004 BC]
Of course James Ussher was a tad off on his calculations but so many
advancements have been made in the science of dating since
The K/Pg impact event was in early June...or correctly according to John
Schneiderman as Thursday 7 June 66,231,962 BCE
Unfortunately the popular tabloids of the day states 65,502,015 BCE without
month or day mentioned...so who are you going to believe...oh and by-the-way:
the last non-avian dinosaur [a Triceratops horridus] died 3 days later, thus
there were Paleogene dinosaurs.
>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: firstname.lastname@example.org Phone: 301-405-4084
>Office: Centreville 1216
>Senior Lecturer, Vertebrate Paleontology
>Dept. of Geology, University of Maryland
>Faculty Director, Science & Global Change Program, College Park Scholars
>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
> Sent: Tuesday, January 06, 2015 2:48 AM
> To: email@example.com
> 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 =