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: [ Ссылка ]
References: Depositional Sedimentary Environments: [ Ссылка ]
Facies models 4: [ Ссылка ]
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GEO GIRL Website: [ Ссылка ] (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!
Hey there, Earth enthusiast! Check my favorite Earth-friendly products:
Bamboo toilet paper: [ Ссылка ]
Bamboo paper towels: [ Ссылка ]
Compostable tableware: [ Ссылка ]
Compostable trash bags: [ Ссылка ]
Bamboo cutlery + straw! : [ Ссылка ]
Eco-Friendly Tote (great for grocery shopping!): [ Ссылка ]
Reusable straws + cleaning brushes (my fav!): [ Ссылка ]
Eco-friendly laundry detergent: [ Ссылка ]
Directly offset your carbon footprint with Wren: [ Ссылка ]
(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: [ Ссылка ]
Brief history of Earth by A. Knoll: [ Ссылка ]
Life on young planet by A. Knoll: [ Ссылка ]
Some assembly required by N. Shubin: [ Ссылка ]
Your inner fish by N. Shubin: [ Ссылка ]
Oxygen by N. Lane: [ Ссылка ]
Alien Oceans by K. Hand: [ Ссылка ]
Life's Engines: [ Ссылка ]
Tools I use as a geologist/teacher/student:
Geology field notebook: [ Ссылка ]
Geology rock hammer: [ Ссылка ]
Geological compass: [ Ссылка ]
Geological hand lens: [ Ссылка ]
Camera: [ Ссылка ]
Image sources:
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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!
