Hello,
Erratics derived from the Speeton Clay are not uncommon in
Holderness. At certain places along the coast they are very common. I
remember finding all 4 zonal belemnites at Hornsea in ten minutes
once!
For lists of the erratics I have recorded - visit -
<http://www.fortunecity.com/greenfield/ecolodge/60/holdhome.htm>.
I have recently been plotting the distribution of erratics onto maps.
BUT remember that the Speeton Clay erratics cannot all come from
Speeton, most are probably derived from exposures under the North Sea.
cheers, Mike.



--- In speeton@yahoogroups.com, "tabfish.atthewaterside"
<tabfish@...> wrote:
>
> Hello all
> Speeton erratics 'what you may say' but it's true, on the
Holderness
> coast you find material from the Upper,Middle,Lower Jurrasic,
> Cretaceous, (Oxfordian, Kimmeridgian, Calovian, Hauterivian etc)
the
> list is not endless but if you like rocks and minerals then we will
> have to go into another 'area'.
> Is it easy to find these fossils on the Holderness coast? I must
say
> no because of nature.
> Tide sizes - wind directions - sand on beach - energy in the sea
all
> have a bearing on the conditions of the beach and rock fields that
> are exposed.
> It helps a lot it you live near the coast - can see the beach, and
> in my case I have been an angler for over 40 years - so
> understanding the tides and the power in the sea helps a lot.
> Has any one else found fossils from Speeton on the H.C?.
> Regards tabfish.atthewaterside
>