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Showing results for tags 'diatomite'.
Found 8 results
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Why the Foulden Maar, New Zealand, fossil site is worth preserving
Oxytropidoceras posted a topic in Fossil News
Life in maars: why it’s worth protecting a spectacular fossil site NZ almost lost to commercial mining interests John G. Gordan and otehrs, The Conversation, July 20, 2023 Foulden Maar: Dunedin City Council saves fossil site from mining by buying land RNZ, February2, 2023 Saving Foulden Maar-GSNZ lnvolvement Daphne Lee, Bruce W Hayward and Jennifer Eccles GSNZ Geoheritage Subcommittee Bruce Hayward publications A book on this site is: Lee, D., Kaulfuss, U. and Conran, J., 2022. Fossil Treasures of Foulden Maar: A Window Into Miocene Zealandia. Otago University Press. Yours, Paul H. -
On October 10, we (my wife and I) went to an extraction site for diatomites, in the Cantal massif. The age of these rocks is Messinian, bordering on Miocene-Pliocene. I present some photos of the exploited site (seen during a previous visit) and some fossils found this Sunday in the rocks stored awaiting industrial treatment. The remains of fossil plants are not abundant, you have to cut a lot of rock and the quality of conservation is often poor, but occasionally a pretty leaf appears... The next problem is long-term preservation, even with immediate consolidation treatment, performed at the site. The most 'common' species is Alnus hoernesi = A. stenophylla, but studies conducted for over a century have identified 86 species!
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Site preserves 23 million year old leaf fossils in diatomite and gives excellent climate record. Locals are pressuring mining interests to preserve scientific value. https://www.atlasobscura.com/articles/new-zealand-fossils
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I’ve received a chunk of what I believe to be a marine mammal bone from a diatomite mine in the Monterey Formation in Southern California. It is from the late Miocene but I’m not sure what mammal or what bone it is. I know this is a long shot as there isn’t much to go off of but anybody have a clue?
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Efforts made to protect Foulden Maar, New Zealand, lagerstatten
Oxytropidoceras posted a topic in Fossil News
Proposal to mine fossil-rich site in New Zealand sparks campaign to protect it https://phys.org/news/2019-06-fossil-rich-site-zealand-campaign.html http://theconversation.com/proposal-to-mine-fossil-rich-site-in-new-zealand-sparks-campaign-to-protect-it-118505 Scientist: maar not only 'outstanding' site By John Gibb, Otago Daily times https://www.odt.co.nz/news/dunedin/scientist-maar-not-only-outstanding-site https://www.odt.co.nz/news/dunedin/council-now-formally-opposed-expansion-mine Foulden Maar - https://en.wikipedia.org/wiki/Foulden_Maar Yours, Paul H. -
Need help to identify the following fossil. It was found in Milos, preserved in volcanoclastic sediment and diatomite. Data from a study in the area suggest late pliocene to early pleistocene. Looks like an echinoderma, but unlike any I've ever seen, since it's test appears to have layers and no apparent mouth (unless it's on the bottom part). I have even considered it being a cystoid or some coral, but I haven't had any luck researching my theories. Units on the pic with the ruler are cm and size is about 4.5cm. Any suggestion would be much appreceated!
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References: Link: Earth Science Week 2001 Field Trip #2 Fossils and Ancient Lakes
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From the album: Vertebrates
Gasterosteus doryssus JORDAN, 1907 Stickleback Pliocene Zanclean Middle Truckee Formation Eagle Picher diatomite mine Hazen, Lyon County Nevada USA
