Re: extinction6

["David Marjanovic" <david.marjanovic@gmx.at>]

> 1. SO2 from the object.
> A group of meteorit containts FeS and Fe2C but only a few percents. This
> isn't enough to produce 500 Gt SO2.

Indeed not. But the impact site is composed of thick layers of dolomite
and... anhydrite (CaSO4 x 1/2 H2O).

> 2. The velocity
> For the energy balance of the collision isn't the total velocity important
> but the vertical component of the velocity is only.

Why? One should think that what's important is the speed of the collision,
in other words the relative velocity of the meteorite to the Earth, no?