Fluvial Depositional Environments & Stratigraphy | GEO GIRL

In this video, I go over fluvial processes, deposition, sedimentary structures, and stratigraphy, in other words, the deposition of sediment and the sediment structures that form in river environments. Deposition of sediment and the resulting sedimentary structures are dependent on flow velocity, grain size, and flow type. The two major types are braided rivers and meandering riviers. Braided streams have flows that are much wider and faster than meandering rivers, which leads to larger grain size deposition because the faster flows can carry larger grains. Meandering rivers deposit smaller grains than braided rivers, but often lead to point bar stratigraphy which contains a characteristic series of sedimentary structures that fine upward in grain size. Common sedimentary structures that form in both braided and meandering streams include cross bedding or cross stratification, graded bedding, ripple marks, and interbedding of silt and mud in the flood plains. If you play the depositional environment playlist videos in order it will make more sense. Here's the link to the playlist:    • Alluvial Fan Depositional Environment...  

References: Depositional Sedimentary Environments: https://amzn.to/3kutTso
Facies models 4: https://amzn.to/3Fp5v3B
https://www.geol.umd.edu/~jmerck/geol...

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 What are fluvial environments?
0:17 Flow types and sediment transport
1:51 Flow velocity and grain size relationship
4:26 Fluvial styles (meandering vs. braided rivers)
5:53 Meandering river landforms
7:01 Meandering river deposition
8:32 point bar deposition & stratigraphy
10:02 Braided river deposition
11:17 Braided river stratigraphy
14: 02 Upcoming videos!

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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

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Image sources:
https://miraimages.photoshelter.com/i...
http://geology.isu.edu/Alamo/rocks/li...
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https://www.researchgate.net/figure/F...
https://messynessychic.files.wordpres...
http://www.braaschphotography.com/pag...
https://www.amazon.ca/Facies-Models-R...
https://www.slideshare.net/cwrc3/fluv...
https://opentextbc.ca/geology/chapter...
https://www.iris.edu/hq/inclass/lesso...
http://intheplaygroundofgiants.com/ge...
https://fntest213.files.wordpress.com...
https://uh.edu/~jbutler/physical/floo...
http://www.myshared.ru/slide/1105423/
http://www.seddepseq.co.uk/DEPOSITION...
https://visibleearth.nasa.gov/images/...

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