On 12/3/06 20:21, in article , "Nick
Maclaren" wrote:

In article ,
JennyC wrote:


I don't really know the Chilterns.....And I must admit that I don't know the
difference between chalk and limestone. Actually I didn't know they were
'related' !!
Nick ????

Why me? :-)

The answer is that all were formed from the shells of diatoms,
shellfish etc.snip
It's both interesting and strange to go to Les Baux in Provence and see
limpet shells in this very high, mountainous village.
--
Sacha
www.hillhousenursery.co.uk
South Devon
)