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Re: [dinosaur] Boltysh impactor

Don't rely so much on the numerical age (note: you didn't include any +/- data, and yet EVERY geological numerical date has uncertainty). The most recent information I can find is that there is good stratigraphic evidence that it **predates** the Chicxulub impact but only by a few thousands of years:


On Fri, Dec 23, 2016 at 4:47 AM, Poekilopleuron <dinosaurtom2015@seznam.cz> wrote:
Good day to all listmembers,

I would like to ask if there is any plan to learn more about the Boltysh impact structure in Ukraine? Given its age (about 65.2 m.y.) this could be the only crater (so far) that might be synchronous with Chicxulub crater, although it is probably somewhat younger. Are there any plans to study it in the near future? And could it be an evidence of multiple impacts at the K-Pg interval if its age will be measured more precisely? Thank you, Tom


Thomas R. Holtz, Jr.
Email: tholtz@umd.edu         Phone: 301-405-4084
Principal Lecturer, Vertebrate Paleontology

Office: Geology 4106, 8000 Regents Dr., College Park MD 20742

Dept. of Geology, University of Maryland

Phone: 301-405-6965
Fax: 301-314-9661              

Faculty Director, Science & Global Change Program, College Park Scholars

Office: Centreville 1216, 4243 Valley Dr., College Park MD 20742
Fax: 301-314-9843

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
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                        8000 Regents Drive
                        University of Maryland
                        College Park, MD 20742-4211 USA