Biogeochemical Cycles: Weathering, C Burial, Anoxia, Ocean Chemistry, & More! | GEO GIRL

Biogeochemical Cycles Part 2: how plate tectonics, mountain building and weathering affect climate, the factors that contribute to the onset and termination of oceanic anoxic events (OAEs), the temperature fluctuations and carbon isotope excursions caused by OAEs, how magnesium (Mg) to calcium (Ca) ion ratios control calcite and aragonite precipitation in the ocean (why skeletons evolved), how seafloor spreading rate at mid-ocean ridges (MORs) controls the Mg/Ca ratios in marine systems, how sea level rises due to increased volume of MORs, the invention of a new rock type by a single type of microorganism (coccolithophores / nannoplankton and chalk), the removal of silica (SiO2) from seawater by diatoms, radiolarians, and sponge spicules causing chert to become a biogenic mineral.

References: Chapter 10 in Earth System History (4th Edition) by Steven M. Stanley and John Luczaj: https://amzn.to/3pYI2BD
Oxygen: A Four Billion Year History by Donald E. Canfield (possibly my favorite book ever, highly recommend!) https://amzn.to/3BEqtJ6
YouTube video of anoxic event:    • Ocean anoxia animation - Sulfate limi...  

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!)

Studying for an exam? Schedule Tutoring with me: https://GEOGIRLTutoring.as.me/

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

Image sources: https://omtimes.com/2016/05/ocean-aci...
https://cleantechnica.com/2017/09/18/...
   • Ocean anoxia animation - Sulfate limi...  
https://www.britannica.com/science/co...
http://southernarrow.com/fossil-shell...
https://www.researchgate.net/figure/S...
http://earthscience.xyz/SeaFloorSprea...
https://en.wikipedia.org/wiki/Mid-oce...
https://divediscover.whoi.edu/mid-oce...
https://phys.org/news/2013-08-carbon-...
http://www.cambsgeology.org/565-2-3-2
https://www.researchgate.net/figure/S...
http://www.todoesciencia.gov.co/apren...

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!