Dear Friends, A recent paper published online in "Geology" formally revises the age of the Lonar Crater in India to 656 ± 81 ka
Jourdan, F., F. Moynier, C. Koeberl, and S. Eroglu, in press, 40Ar/39Ar age of the Lonar crater and consequence for the geochronology of planetary impacts. Geology, published online on 24 May 2011 as doi:10.1130/G31888.1 http://geology.gsapubs.org/content/early/2011/05/19/G31888.1.abstract Jourdan, F. , F. Moynier, C. Koeberl, 2010, First 40Ar/39Ar Age of the Lonar Crater A ~0.65 MA Impact Event? 41st Lunar and Planetary Science Conference (2010), Abstract no. 1661. http://www.lpi.usra.edu/meetings/lpsc2010/pdf/1661.pdf “Conclusions: We propose a new impact age at 656 ± 81 ka for the Lonar crater. This age is based on 40Ar/39Ar analyses of several samples combined in a statistically robust global inverse isochron (MSWD =1.29; P =0.12). This age is in accordance with the preservation state of the crater.” An online paper about the geology of the Lonar Crater is: Maloof, A. C., Sarah T. Stewart, Benjamin P. Weiss, Samuel A. Soule, Nicholas L. Swanson-Hysell, Karin L. Louzada, Ian Garrick-Bethell, and Pascale M. Poussart, 2008, Geology of Lonar Crater, India, Geology. vol. 122, no. 1-2, pp. 109-126. http://gsabulletin.gsapubs.org/content/122/1-2/109.abstract PDf file at http://www.princeton.edu/geosciences/people/maloof/pdf/maloof_etal08.pdf http://web.mit.edu/iang/www/pubs/Lonar_Geology_Preprint_GSABull_submitted_2008.pdfhttp://web.mit.edu/iang/www/pubs/Lonar_Geology_Preprint_GSABull_submitted_2008.pdf 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
