Gastropod Fossil Hunting Day

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mrix
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Gastropod Fossil Hunting Day

Post by mrix » Tue Oct 09, 2018 6:34 pm

Hello all, as the weather was so very nice I thought I would take a trip fossil hunting ::g
Created a little video below for anyone interested ::g




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Re: Gastropod Fossil Hunting Day

Post by HolzHammer » Tue Oct 09, 2018 6:39 pm

Great stuff - I've not done that sort of fossilising before - are they fossils or preserved shells?

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Re: Gastropod Fossil Hunting Day

Post by mrix » Tue Oct 09, 2018 6:44 pm

HolzHammer wrote:
Tue Oct 09, 2018 6:39 pm
Great stuff - I've not done that sort of fossilising before - are they fossils or preserved shells?

That`s a good question, they are around 40 million years old but from my understanding they are generally more preserved than fossilised.

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Re: Gastropod Fossil Hunting Day

Post by Blackadder43 » Tue Oct 09, 2018 7:13 pm

Oh I am soo Jealous, mrix invited me up for this hunt today but i couldnt make it
Damn i missed out on a good day, good weather and good company
next time fella, i'm there, but not on a tuesday please lol

Great finds too
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Re: Gastropod Fossil Hunting Day

Post by mrix » Tue Oct 09, 2018 7:19 pm

Blackadder43 wrote:
Tue Oct 09, 2018 7:13 pm
Oh I am soo Jealous, mrix invited me up for this hunt today but i couldnt make it
Damn i missed out on a good day, good weather and good company
next time fella, i'm there, but not on a tuesday please lol

Great finds too
Certainly would be a nice change to share the days experience so look forward to getting that ideal day BA ::g .

Thanks
mrix

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Re: Gastropod Fossil Hunting Day

Post by HolzHammer » Tue Oct 09, 2018 7:23 pm

mrix wrote:
Tue Oct 09, 2018 7:19 pm
Blackadder43 wrote:
Tue Oct 09, 2018 7:13 pm
Oh I am soo Jealous, mrix invited me up for this hunt today but i couldnt make it
Damn i missed out on a good day, good weather and good company
next time fella, i'm there, but not on a tuesday please lol

Great finds too
Certainly would be a nice change to share the days experience so look forward to getting that ideal day BA ::g .

Thanks
mrix
if BA can't make it I'd definitely join you and I can prob do a Tuesday!

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Re: Gastropod Fossil Hunting Day

Post by ossie » Tue Oct 09, 2018 7:36 pm

I have a few boxes with stuff from the same beach,as you probably know you can find some cracking fossilized sharks teeth there too.
Lovely day for it,thanks for the video.

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Re: Gastropod Fossil Hunting Day

Post by Oxgirl36 » Tue Oct 09, 2018 8:31 pm

Ooooh can i join you too? That would right pee off the Blackadder one =))

It looks like fun extracting them. And as you know your wife is great and finding the big shells so I’m sure I could be good at it too. It can’t be that hard can it? Famous last words and all that :D

Great video Mrix ::g
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Re: Gastropod Fossil Hunting Day

Post by Keef the Frog » Tue Oct 09, 2018 10:04 pm

mrix wrote:
Tue Oct 09, 2018 6:44 pm
HolzHammer wrote:
Tue Oct 09, 2018 6:39 pm
Great stuff - I've not done that sort of fossilising before - are they fossils or preserved shells?

That`s a good question, they are around 40 million years old but from my understanding they are generally more preserved than fossilised.
I've a pair of ammonites that came from a nodule from Pakefield's boulder clay, Oxfordian I think. Both are actual ammonite material that's not been mineralised. They're a bit of a jigsaw as someone had given the nodule a clump with a hammer & left it in pieces but all the internals such as the siphuncle are there ::g

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Re: Gastropod Fossil Hunting Day

Post by GeoJon » Tue Oct 09, 2018 10:21 pm

I don't think it really matters if it's the original material or replacement. Any preserved remains over 10,000 years old (whether it's original shell or petrified organic material or just a trace/track) is a fossil.
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Re: Gastropod Fossil Hunting Day

Post by mrix » Wed Oct 10, 2018 11:37 am

Had this interesting information kindly sent back from a guy at the Dmap site regarding if these shells can be technically be classed as fossils.............

As I understand it there have been changes in the shell composition during the
long period since deposition. One of these changes is the conversion of the
original aragonite mineral in the shells to calcite. Both of these minerals,
however, are crystalline forms of the same chemical compound, calcium
carbonate, so the change is rather subtle, at least visually. The sediments
surrounding the fossils have remained soft, as clays, silts and sands,
rather than transforming to harder rocks such as shale, siltstone and
sandstone.

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Re: Gastropod Fossil Hunting Day

Post by JBM » Wed Oct 10, 2018 11:43 am

Its puts everything into perspective time wise.

We get so excited over a few finds in the fields and fossil hunting is on another level altogether.

Good post by mrix. ::g

Happy Hunting,

Jerry.

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Re: Gastropod Fossil Hunting Day

Post by poly » Wed Oct 10, 2018 3:55 pm

A very nice video and excellent specimens collected. It is quite common for organisms such as oysters, limpets, bryozoans, corals, serpulid worms, etc.. to attach themselves to a suitable hard substrate such as a large shell to grow on.

The term used for such encrusting organisms is epibionts.

Many palaeontologists including myself study epibionts and they are often key to understanding the palaeoenvironment at time of deposition of the bedrock they are found in.
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