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Found 8 results

  1. What caused the ice ages? Tiny ocean fossils offer key evidence Liz Fuller-Wright, Office of Communications,Dec. 10, 2020 https://www.princeton.edu/news/2020/12/10/what-caused-ice-ages-tiny-ocean-fossils-offer-key-evidence The paper is; Ai, X.E., Studer, A.S., Sigman, D.M., Martínez-García, A., Fripiat, F., Thöle, L.M., Michel, E., Gottschalk, J., Arnold, L., Moretti, S. and Schmitt, M., 2020. Southern Ocean upwelling, Earth’s obliquity, and glacial-interglacial atmospheric CO2 change. Science, 370(6522), pp.1348-1352. Yours,
  2. Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to com
  3. Some other picture of Fossil Diatoms take with biological microscope, magnification 400X - 650X
  4. here THE SUBFOSSIL ALGAL FLORA OF THE LAKE BOLLING SØ AND ITS LIMNOLOGICAL INTERPRETATION BY E. FJERDINGSTAD København 1954 Det Kongelige Danske Videnskabernes Selskab Biologisk Skrifter,Bind 7,n.6/1954 large!!!!: 37 MB I need/would appreciate help in tagging AT LEAST PeatBurns! ampersand etc.. For anyone focusing on The Bolling* interstadial,this might(should?) be interesting *diacritic omitted
  5. Oxytropidoceras

    Fossil Diatoms Can Cause Mega-slides

    Tiny fossils, huge landslides: Are diatoms the key to Earth's biggest slides? Geological Society of America, February 12, 2018 https://www.sciencedaily.com/releases/2018/02/180212133446.htm https://phys.org/news/2018-02-tiny-fossils-huge-diatoms-key.html "The biggest landslides on Earth aren't on land, but on the seafloor. These mega-slides can move thousands of cubic kilometers of material, and sometimes trigger tsunamis. Yet, remarkably, they occur on nearly flat slopes of less than three degrees." Morelia Urlaub, Jacob Geersen, Sebastian Krastel, Tilma
  6. Diatoms are monocellular organisms which contain chlorophyll, and manufacture their own food in the same manner as plants, through the process of photosynthesis. They are one of the major producers of the Earth's oxygen. Their long geological history makes them very useful in the correlation of sedimentary rocks, and they are of equal value in reconstructing paleoenvironments. They are remarkably common everywhere there is any water at all! I have studied fossil marine diatoms for many years, as they are my primary interest in the microfossil world. Many of them are quite beautiful, and t
  7. Oxytropidoceras

    Antarctic Pliocene Diatom Mystery Solved?

    Antarctic mystery solved? Ocean fossils found in mountains are cause for concern over future sea levels, scientists say, Northern Illinois University , September 21, 2016 http://newsroom.niu.edu/2016/09/20/antarctic-mystery-solved-scientists-say-ocean-fossils-found-in-mountains-are-cause-for-concern-over-future-sea-levels/ https://www.sciencedaily.com/releases/2016/09/160921103712.htm Scientists may have just solved a riddle about Antarctica - and the answer isn't comforting, Worcester Telegram, ‎Sept. 21, 2016‎ http://www.telegram.com/news/20160921/sc
  8. The Stuart R. Stidolph Diatom Atlas is now officially online as U.S. Geological Survey Open-File Report no. 2012-1163 by S. R. Stidolph, F. A. S. Sterrenburg, K. E. L. Smith, and A. Kraberg at http://pubs.usgs.gov/of/2012/1163/ . There are 1,002 diatom pictures, which can be downloaded for free as PDF files from http://pubs.usgs.gov...ges/plates.html . Although these are not fossil diatoms, they are still fascinating to look at. Best wishes, Paul H.
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