Stable & Radiogenic Isotopes in Igneous Petrology- Geochronology & Isotope Tracers- #8 | GEO GIRL

Ever wonder how we use isotopes in geology? Ever wonder about the difference between stable and radiogenic isotopes? Here, I discuss stable isotope fractionation as well as stable isotope applications in igneous petrology (for temperature reconstructions and as isotopes tracers), then we switch to radiogenic isotopes, in which I go over the applications of potassium argon dating, argon argon dating, and uranium lead dating for geochronology, then I briefly cover some other dating methods as well as the fan favorite, carbon dating, and why C dating is not applicable to igneous petrology. Lastly, we touch on isotope petrogenesis, the study of magma sources, and the common isotope pairs we use for this (strontium, hafnium, neodymium, and lead), with an example of how we use Sr isotopes to determine magma source and then how the application of Hf isotopes and Nd isotopes differ to that of Sr isotopes. References: Essentials of Igneous Petrology by Ronald and Carol Frost: https://amzn.to/37Zs9AL Earth Materials by Cornelis Klein and Anthony Philpotts: https://amzn.to/3z5sCxe GEO GIRL Website: https://www.geogirlscience.com/ (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 isotope introduction 2:16 stable vs radioactive isotopes 3:57 stable isotope fractionation 5:57 kinetic vs equilibrium isotope fractionation 8:52 geothermometry & isotope tracers 11:00 radiogenic isotope geochemistry 13:12 K-Ar dating 14:21 Ar-Ar dating 15:42 U-Pb dating 17:35 Other U dating methods 19:39 carbon dating 20:46 what is isotope petrogenesis? 22:38 Sr isotopes to determine magma sources 24:12 Hf & Nd isotopes to determine magma sources 25:18 Upcoming videos! Hey there, Earth enthusiast! Check my favorite Earth-friendly products: Bamboo toilet paper: https://shrsl.com/3cvku Bamboo paper towels: https://shrsl.com/3cvkw Compostable tableware: https://shrsl.com/3cvkz Compostable trash bags: https://shrsl.com/3cvl0 Bamboo cutlery + straw! : https://shrsl.com/3cwfl Eco-Friendly Tote (great for grocery shopping!): https://shrsl.com/3cwfp Reusable straws + cleaning brushes (my fav!): https://shrsl.com/3cwft Eco-friendly laundry detergent: https://shrsl.com/3cwgo Directly offset your carbon footprint with Wren: https://shrsl.com/3d0t2 (Just click link, press get started, take the free C footprint quiz, then choose how much you want to reduce your footprint by donating to the C sequestration projects they're funding!) Non-textbook books I recommend: Oxygen by D. Canfield: https://amzn.to/3gffbCL Brief history of Earth by A. Knoll: https://amzn.to/3w3hC1I Life on young planet by A. Knoll: https://amzn.to/2RBMpny Some assembly required by N. Shubin: https://amzn.to/3w1Ezm2 Your inner fish by N. Shubin: https://amzn.to/3cpw3Wb Oxygen by N. Lane: https://amzn.to/3z4FgwZ Alien Oceans by K. Hand: https://amzn.to/3clMx1l Life's Engines: https://amzn.to/3w1Nhke Tools I use as a geologist/teacher/student: Geology field notebook: https://amzn.to/3lb6dJf Geology rock hammer: https://amzn.to/3DZw8MA Geological compass: https://amzn.to/3hfbdLu Geological hand lens: https://amzn.to/3jXysM5 Camera: https://amzn.to/3l6fGRT Carbon-neutral pencil bag: https://shrsl.com/3cvjv Carbon-neutral backpack: https://shrsl.com/3cvkc Disclaimer: Links included in this description might be affiliate links. If you purchase a product or service with the links that I provide I may receive a small commission, but there is no additional charge to you! Thank you for supporting my channel so I can continue to provide you with free content each week! And as always, let me know your topic suggestions in the comments down below!