Hi Sterling, Paul, List - Re: Date of Kitscoty structure
Since there have been many ice ages, it seems to me that if the Kitscoty structure was more ancient than the most recent ice age, it would have been scoured away. Hence the timing of its formation would seem to agree with the documented water releases. Please remember that this may have been the first impact of a piece of Comet Giacobinni-Zimmer. The 10,850 BCE impacts were likely to have been the second impacts of pieces of this comet. But refining these dates and aligning them with cometary dynamic orbital models is well beyond my current computational abilities. Re: Changes in 14C and impact If I remember correctly, it was a leading Chinese nuclear physicist (unidentified by name in the paper) who first discussed the production of 14C in comets. Comet composition may be one factor in the 14 C loading. But if we look at the InCal charts, we can see a dramatic change in 14C associated with the "Meteor" Crater impact, which we know was produced by he impact of an iron asteroid. Hence my hypothesis that in hyper-velocity impacts, some of the photons reach gamma ray energy levels and release neutrons. If this is so, then the area around "Meteor" Crater may show or may not show some unusual isotopes, depending on their half-lives. good hunting, everyone E.P. Grondine Man and Impact in the Americas -------------------------------------------- On Mon, 6/29/15, Sterling K. Webb <[email protected]> wrote: Subject: RE: [meteorite-list] Changes In 14C and Impacts To: [email protected] Cc: "'E.P. Grondine'" <[email protected]>, "'Paul H.'" <[email protected]> Date: Monday, June 29, 2015, 11:07 AM Paul, Ed, List, The village is actually named "Kitscoty." https://en.wikipedia.org/wiki/Kitscoty Kitscoty is named after a village in Kent (U.K.) with a famous stone megalithic structure, so while Googling for a Kitscoty Structure you have to distinguish which Kitscoty and what kind of structure is meant. http://albertacommunityprofiles.com/Profile/Kitscoty/2 The "structure" referred to is a proposed "rebound" plateau of an impact south of Kitscoty, Alberta, Canada: http://www.meridianbooster.com/2009/03/18/did-a-massive-meteor-touch-down-he re I don't know (and am not going to Google myself to death finding out), but I recall that Hudson Bay and the Canadian Shield is very old crust, at least 2.0 to 2.5 billion years old. It is bound to have evidence of a great many impacts in that long time span, but most, of ancient age. Plus, the Canadian Shield has been scoured by every ice age for billions of years, over and over and over again. Only evidences that can survive that will be found. With typical human short-sightedness, most theories of any explanation of a feature in Northern Canada are always referred to "the last Ice Age," which is only the last few million years, while the Shield is immensely more ancient and has been exposed for BILLIONS of years. Northern Canada contains a great many craters; see: http://www.thelivingmoon.com/43ancients/02files/Earth_Images_09.html#Steen I can suggest another very ancient crater: the south-southeastern coast of Hudson Bay, above James Bay is a portion of a perfect circle and it has a nice cluster of islands at the geometric center of that circle like the remnants of central peaks. I've always thought that it could be what's left of a very, very ancient "astrobleme." See map at: http://www.worldatlas.com/aatlas/infopage/hudsonbay.htm It's very suggestive. But evidence? I know of none. Sterling Webb ---------------------------------------------------------- -----Original Message----- From: Meteorite-list [mailto:[email protected]] On Behalf Of E.P. Grondine via Meteorite-list Sent: Sunday, June 28, 2015 10:53 AM To: [email protected] Subject: [meteorite-list] Changes In 14C and Impacts Hi Paul - Thanks for the link to that paper. I am looking forward to your comments on the Kiscoty structure. My guess is that the depth of the ice sheet may be estimated from the height of the rebound, but I am incapable of performing detailed calculations from any formula you may know of. My working assumption is that nearly all of the energy released from the initial blast went into different processes which melted the ice sheet - such as the infra-red, the boiling water returning to Earth, the hot impact dust returning, etc. E.P. Grondine Man and Impact in the Americas ______________________________________________ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] https://pairlist3.pair.net/mailman/listinfo/meteorite-list ______________________________________________ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] https://pairlist3.pair.net/mailman/listinfo/meteorite-list
