Dear Friends, I came across the following abstract about ongoing research concerning trhe Younger Dryas impact hypothesis. It is:
Gill, J. L., J. P. Marsicek, J. P. Donnelly, B. Simonson, and J. W. Williams, 2009, Do lake sediment records show evidence of a Younger Dryas impact event or its potential ecological effects? Abstract COS 13-5, The 94th ESA Annual Meeting (August 2 -- 7, 2009) Albuquerque, New Mexico. http://eco.confex.com/eco/2009/techprogram/P20277.HTM In part, the abstract states: "We collected sediment cores from Appleman and Spicer Lakes, IN, Silver Lake, OH, and Kirchner Marsh, MN, with radiocarbon-dated records spanning the YD. Our sites are ideally situated to record regional environmental responses to a nearby impact." It concludes: "Results from LOI, magnetics, microspherules, charcoal and XRF do not show the signatures predicted for a YD event. Vegetation reconstructions are still in progress as of the time of this abstract, but at Appleman, the Sporormiella decline precedes the YD. We are continuing analyses to determine whether this apparent discrepancy between the predictions of the YD impact hypothesis and the lack of evidence in lake sediments persist across sites." It is part of the "COS 13 - Paleoecology" session at: http://eco.confex.com/eco/2009/techprogram/S4761.HTM Yours, Paul H. ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
