[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re:Norman MacLeod's opinion of Alvarez' dispassion
At 09:47 AM 10/2/98 -0400, King, Norm wrote:
>I would say that a bolide is indeed implicated in the
>extinction. It is implicated by the apparent contemporaneity
>of the events (as go also pointed out).
Indubitably. It has been several years since I, at least, l;last suggested
> But is it the whole answer? That's another question.
Indeed, I would say it is *the* question wrt the K-T extinction.
There are really only two widely held competing hypotheses: the pure impact
model, and the multi-factorial model. In the latter the impact is, of
course, one of the many factors contributing to the extinction.
Note, recent evidence of a major impact in the Late Carnian is suggestive
that a large impact per se is insufficient to cause a major extinction, as
it does NOT correlate well even with a relatively minor mass extinction.
May the peace of God be with you. email@example.com