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<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">I agree, like the nanno zonations of Jeremiah (2001) and Mortimer (87), designed for offshore and drilling, very useful
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<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">All the best,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Emma<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="color:#1F497D">Emma Sheldon,<br>
Biostratigrapher / Senior Researcher,</span><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif"><br>
</span><span lang="EN-US" style="color:#1F497D">Department of Geoenergy and Storage,</span><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif"><br>
</span><span lang="EN-US" style="color:#1F497D">Geological Survey of Denmark and Greenland (GEUS),</span><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif"><br>
</span><span lang="EN-US" style="color:#1F497D">Øster Voldgade 10,</span><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif"><br>
</span><span lang="EN-US" style="color:#1F497D">DK 1350,</span><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif"><br>
</span><span lang="EN-US" style="color:#1F497D">Copenhagen K,</span><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif"><br>
</span><span lang="EN-US" style="color:#1F497D">Denmark.</span><span lang="EN-US" style="font-size:10.5pt;font-family:"Arial",sans-serif"><br>
</span><span style="color:#1F497D">Tel: 0045 9133 3712</span><span style="font-size:10.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><b>Fra:</b> Coccoliths <coccoliths-bounces@fcnym.unlp.edu.ar>
<b>På vegne af </b>Bryan Ladner<br>
<b>Sendt:</b> 28. marts 2025 13:40<br>
<b>Til:</b> Mailing list for INA members and other scientists working with living or fossil nannoplankton <coccoliths@fcnym.unlp.edu.ar><br>
<b>Emne:</b> Re: [coccoliths] KN zonation<o:p></o:p></p>
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<p class="MsoNormal">I think that Bergen and Sikora worked this zonation up primarily for use in oil exploration. Given that the biostrat is worked from the top down as the well is being drilled then I think that this is perfectly useful for the task it's intended
for.<o:p></o:p></p>
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<p class="MsoNormal">On Fri, Mar 28, 2025 at 3:53 AM Ines Galović <<a href="mailto:inesgalovic@gmail.com">inesgalovic@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">To all, I believe younger colleagues or maybe biologists, if you want your biostratigraphy to be useful, I suggest following some biostratigraphic basic rules such as "Biostratigraphic units are distinct from other kinds of stratigraphic
units in that the organisms whose fossil remains define them show <b>evolutionary changes through geologic time...</b>". It means labeling the zones from older (1) to younger (41), not in reverse order, please.<o:p></o:p></p>
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<p class="MsoNormal">Cheers,<o:p></o:p></p>
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<p class="MsoNormal">Ines<span style="font-family:"Segoe UI Emoji",sans-serif">🌷</span>
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<p class="MsoNormal">On Thu, 27 Mar 2025 at 12:26, Nicolas Rudolph Thibault <<a href="mailto:nt@ign.ku.dk" target="_blank">nt@ign.ku.dk</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi Jeremy,<br>
<br>
This is coming from the following reference:<br>
<br>
Bergen, J.A., Sikora, P.J., 1999. Microfossil diachronism in southern Norwegian North Sea chalks: Valhall and Hod fields, in: Jones, R.W., Simmons, M.D. (Eds.), Biostratigraphy in Production and Development Geology. Geological Society of London Special Publications
152, Geological Society, London, pp. 85-111.<br>
<br>
It is somewhat useful for the North Sea, though mostly with similar events as used in the UC(BP) and UC ('i') zonations<br>
<br>
I attach the paper hereby.<br>
<br>
Cheers,<br>
Nic<br>
-----Original Message-----<br>
From: Coccoliths <<a href="mailto:coccoliths-bounces@fcnym.unlp.edu.ar" target="_blank">coccoliths-bounces@fcnym.unlp.edu.ar</a>> On Behalf Of Young, Jeremy<br>
Sent: 26. marts 2025 23:26<br>
To: <a href="mailto:Coccoliths@fcnym.unlp.edu.ar" target="_blank">Coccoliths@fcnym.unlp.edu.ar</a><br>
Subject: [coccoliths] KN zonation<br>
<br>
Hi<br>
In TimeScaleCreator there is KN nannofossil zonation for the Late Cretaceous, with zones from KN1 at the top of the Maastrichtain to KN40 in Cenomanian. However, I can't find this zonation anywhere else. Does anyone know where it comes from, and if it has
any continuing value?<br>
Jeremy<br>
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<p class="MsoNormal"><span class="gmailsignatureprefix">-- </span><o:p></o:p></p>
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<p class="MsoNormal">Bryan C. Ladner<br>
Tel: 228 806 9157<o:p></o:p></p>
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