1 / 12

FINDING NEO

FINDING NEO. Ocean Record of Ancient Climate. Foraminifera (“ Forams ”) One-celled organisms Widespread through the oceans “Tests” = shells Approximately the size of sand grains Made of CaCO 3 or sediment particles Fossil tests preserved in ocean sediment layers

ata
Download Presentation

FINDING NEO

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. FINDING NEO

  2. Ocean Record of Ancient Climate • Foraminifera (“Forams”) • One-celled organisms • Widespread through the oceans • “Tests” = shells • Approximately the size of sand grains • Made of CaCO3 or sediment particles • Fossil tests preserved in ocean sediment layers • Many modern species have existed for millions of years – scientists can study these “proxies” today!

  3. Living Forams Photo Credits: Dr. Howard Spero, University of California – Davis Video: International Council for Science, Scientific Committee on Ocean Research - ScienceMediaNL

  4. Fossil Foram Tests Photo Credits: Michael Hesemann, Foraminifera EU

  5. Neogloboquadrinapachydermaaka “N. pachy” or “Neo” right coil = warm ocean water left coil = cold ocean water

  6. YOUNGER Low Percent Right Coil (Mostly Left Coil) = Cold Ocean OLDER High Percent Right Coil = Warm Ocean We can use fossil “Neo” tests (shells) to find ancient ocean temperatures

  7. Photo Credits: Texas A & M University, College Station (Ocean Drilling Program)

  8. Finding “Neo” Ocean sediment core

  9. USE “NEO” TO FIND THE CLIMATE HISTORY OCEAN SEDIMENT CORE SOUTHEAST OF NEW ZEALAND Layer 1 10,000 ybp Layer 2 15,000 ybp Layer 3 20,000 ybp ybp = years before present

  10. Neogloboquadrina R L right coil = warm ocean water left coil = cold ocean water

  11. R L

  12. L R R R

More Related