Paleogene Tectonics & Geography- Effect on Climate, Mammal Migration, & Mountain Building | GEO GIRL скачать в хорошем качестве

Paleogene Tectonics & Geography- Effect on Climate, Mammal Migration, & Mountain Building | GEO GIRL

After the end Cretaceous Extinction, mammals could spread throughout terrestrial environments since dinosaurs were no longer a threat. Mammals rapidly diversifies in part due to the continued splitting of the continents during the Early Cenozoic (Paleogene period). The shift of continents during the Paleogene caused major climate change, most notably, cooling of the south pole due to the isolation of Antarctica (after Austrailia migrated away from it and the Drake Passage between South America and Antartica formed and deepened). The Mid-Atlantic Ridge continued to spread, eventually connecting the Atlantic and Arctic oceans, however, the Pacific ocean never connected with the Arctic as continental crust remained (and still remains) between these oceans. This Bering Land Bridge which connected Asia and Alaska allowed the migration of mammals to America. Tectonically, subduction continued to flatten at the western margin of North America. Laramide orogenic uplifts were then leveled by erosion by the Oligocene before latter subduction of the Pacific Plate caused the mountain building that led to the modern Rockies & coastal ranges later in the Cenozoic. Rifting began in the region after the Laramide orogeny. One such rift system was the Rio Grande Rift, which is still spreading today. Non-hospot related Yellowstone volcanism & the extraterrestrial impact that formed the world's largest estuary, Chesapeake bay, also occured in the Paleogene. References: Earth System History: https://amzn.to/3v1Iy0G 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 0:00 What & when was the Paleogene? 0:59 Cretaceous continents 1:45 Paleogene continents 2:19 Continental shifts affected climate 3:39 Mid Atlantic Ridge development 4:57 Bering Land Bridge 5:32 Laramide Orogeny 9:44 Modern Subduction at Western N. America 10:23 Flat terrain following the Laramide? 12:27 Rio Grande Rift formation 14:11 Yellowstone volcanism in the Eocene 14:52 Chesapeake Bay asteroid impact 16:26 Related videos & references 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!