Re: Impact craters

[Jeff Hecht <jhecht@world.std.com>]

Brooke Swanson wrote:
>
>Environmental News Network newsletter ran a story today about two smaller
>impact craters found near the Chixalub crater. "Researchers Adriana Ocampo
>of NASA's Jet Propulsion Laboratory, Pasadena,
>Calif., and Kevin Pope of Geo Eco Arc Research, La Canada-Flintridge,
>Calif., led an international team that discovered the two new sites during
>a recent expedition sponsored by NASA's Exobiology Program and The
>Planetary Society, Pasadena, Calif."
>http://www.enn.com/news/enn-stories/031798/impact.shtm
>
>These craters, according to the article, substantiate the impact theory of
>dino demise but I didn't really understand, from the article, how this was
>determined. Does anyone know of publications more substantive than the ENN
>on this?
>
I don't have the press release any more, but NASA and/or JPL issued one
which explains that the sites are not new craters, but new places where
they found debris from the Chicxulub impact. That's a crucial difference,
and it was not evident from the release.
-- Jeff Hecht