Stable oxygen isotopes- how oxygen isotope ratios can be tracked throughout different environmental systems and through geologic time due to predictable isotopic fractionation pathways to reconstruct Earth's history. Specifically, oxygen isotope basics, heavy versus light isotopes, oxygen 16, 17, and 18 relative abundances, isotope notation (permil notation), ocean and atmosphere temperature proxy, elevation proxy, paleoclimate / paleoenvironment proxy, carbonate fossils (foraminifera, mollusks, corals, sponges, coccolithophores), apatite (conodont, teeth fossils), ice cores, ice core climate / temperature reconstructions using oxygen, hydrogen, and carbon isotope composition, ice core bubbles, tree rings, leaf shapes, and more!

References: Stable isotopes textbook: [ Ссылка ]

GEO GIRL Website: [ Ссылка ] (visit my website to see all my courses, shop merch, learn more about me, and donate to support the channel if you'd like!)

0:00 Quick Ologies shoutout!
0:24 What I cover in this video
0:34 some stable isotope basics
3:14 illustration of H vs O isotopes
3:53 How O isotopes behave in environment
5:46 O isotopes and temperature
7:08 O isotopes and elevation
8:03 Why fossils help us use O isotopes
10:02 O isotopes reconstruct ancient temperatures
11:31 using Foram coil directions?
12:37 other isotopes in fossils?
13:05 isotopes growth bands in fossils?
13:30 isotopes in paleosol nodules?
14:14 isotopes in teeth?
15:07 isotopes in algae?
15:28 ice core isotopes?
16:29 ice bubble isotopes?
16:51 Amber and pollen isotopes?
17:19 Isotopes in tree rings, leaf shape/composition, etc.

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