Estuary Depositional Environments & Stratigraphy | GEO GIRL скачать в хорошем качестве

Estuary Depositional Environments & Stratigraphy | GEO GIRL

Estuary depositional environments are those where sediment is transported and deposited by esuarine processes, in other words the combined effect of wave, tidal, and fluvial (river) input. But did you know there are different types of estuaries? In this video, I go over estuarine deposition, processes, sedimentary structures, and stratigraphy. The types of estuaries are coastal plain estuaries that form by river erosion, bar-built estuaries that form by barrier bar formation, tectonic estuaries that form by tectonic activity, and fjord estuaries that form in glacial-carved fjords. They are all typically transgressive rather than regressive. Regressive shorelines are those in which the basin margin moves basin-ward and these typically form deltas. Whereas transgressive shorelines are those where the basin margin moves inland due to a heavy wave and tidal influence that is stronger than the river influence. The geometry of estuaries and the bedforms, such as bars, that form in them depends on the relative wave, tide, and river influence. Estuaries are dominated by hypopycnal flows (when the inflow water is less dense than the basin water), whereas deltas are dominated by hyperpycnal flows (the inflow is more dense than the basin water). See delta video for more on such flow types:    • Delta Depositional Environments & Stratigr...  . I then discuss the transgressive and regressive sequences that form in the cycle from estuarine to fluvial, deltaic processes. I close out the video by going over the stratigraphy of estuary facies and how to recognize an estuarine environment in the rock record. Hope you enjoy! ;) References: Depositional Sedimentary Environments: https://amzn.to/3kutTso Facies models 4: https://amzn.to/3Fp5v3B http://www.seddepseq.co.uk/SEQ_STRAT/... https://scialert.net/fulltext/?doi=ja... 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 Where/what are estuaries? 0:28 Types of estuaries 0:53 Estuary geometries/morphologies 3:00 Estuary deposition & sedimentation processes 4:31 Transgression vs. regression in estuaries 5:30 Stratigraphy of estuarine environments 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://ibetww.com/guinea-bissau-hvac... http://geology.isu.edu/Alamo/rocks/li... https://www.chegg.com/flashcards/estu... https://www.amazon.ca/Facies-Models-R... https://www.researchgate.net/figure/R... http://www.sepmstrata.org/page.aspx?p... http://www.seddepseq.co.uk/SEQ_STRAT/... https://scialert.net/fulltext/?doi=ja... http://www.photodestination.co.za/aer... 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!