Delta Depositional Environments & Stratigraphy | GEO GIRL

Delta depositional environments: types, geometry, facies distribution, morphology, and stratigraphy of deltaic systems. Specifically, the importance of regression (progradation) for river deltas, the influence of waves and tides, hypopycnal, homopycnal, hyperpycnal, and turbidity flows and which flow type is most common in deltas, position relative to shelf edge, grain size and composition of sediment fed to the basin from the fluvial system, slope steepness and elongation, wave reworking, lobe abandonment and erosion during transgression (retrogradation) causing lobe migration (bird foot of Mississippi river delta example), upper delta plain, bayline (or tidal limit), lower delta plain, delta front, prodelta, and storm-wave overwriting of delta deposits.
References: Depositional Sedimentary Environments: amzn.to/3kutTso
Noel P. James and Robert W. Dalrymple. (2010). Facies models 4: amzn.to/3Fp5v3B
GEO GIRL Website: 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 deltas?
1:35 Types of deltas /delta geometries
2:21 Facies distribution in deltaic systems
2:36 Inflow density (hyperpycnal, hypopycnal, & homopycnal)
3:59 Wave vs tide dominated deltas
4:52 Delta position relative to shelf basin effect on facies distribution
5:26 Sediment type/grain size distribution
6:39 Slope steepness effect on facies distribution
7:58 Wave reworking of deltaic sediment
8:36 Delta migration /lobe abandonment
10:52 Delta body parts labeled
11:49 Delta stratigraphy
13:31 Fluvial delta vs. wave delta stratigraphy
15:07 Recap of related depositional environments
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Image sources:
millenniumjournal.org/river-d...
www.amazon.ca/Facies-Models-R...
www.researchgate.net/figure/F...
www.hgs.org/civicrm/event/inf...
doi.org/10.1017/S001675680002...
www.researchgate.net/figure/T...
www.amazon.ca/Facies-Models-R...
www.slideserve.com/Angelica/m...
www.sepmstrata.org/Terminology...
www.adammandelman.net/tag/rive...
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!

[@adamstefany8110]

this is going to help me with my sed-strat final, your explanation of lobe abandonment was very clear to me, thank you!

[@GEOGIRL]

Thanks for the comment! I am so glad the video was helpful to you :D I have a whole playlist on various depositional environments if you think that would help you study: kzbin.info/aero/PL69bBhmsrgfsrQyfSaxx5ioVhhfwtyAHI

[@do_gotcha]

Working on my GIS final and noticed a new video. Yes, of course I'm going to pause the final just so I can watch the video lol. Guess I can go back to my final now. Thanks for another great video!

[@GEOGIRL]

Lol that's hilarious, I love that! I am glad you enjoy them so much haha!

[@josevarghese256]

I was searching for some nice videos on depositional environments and your channel came in. Your slide packs are extremely good and contains lot of basic information. Equally good for students as well as for anyone in the industry wanting to refresh sedimentology. Your narration is also very good. Many thanks for putting efforts to make these. I already finished watching 3 of the depositional environments form your collection. Great work :-) .

[@GEOGIRL]

Oh my gosh, you seriously just made my day! I made these depo env. videos very early on and I know the video/audio/editing quality is not that great, so I am so glad to hear the content is still worth while for you students and/or professionals out there! :D

[@palandasghodeswar6169]

Thanks for giving very important information about Delta deposition. 🙏

[@GEOGIRL]

Of course! So glad you found it useful :)

[@danibelfon2385]

Awesome video! Thanks for sharing

[@GEOGIRL]

Of course, I am glad you liked it! ;D

[@Darth-Nihilus1]

I wish I could find more information on western Pennsylvania since 75% of the sedimentary rock from the Carboniferous and the beginning of the Permian period. I do a lot of fossil mapping around western Pennsylvania and eastern Ohio

[@kartik_bharad_patil6589]

Very good content👍👍keep it

[@GEOGIRL]

Thanks so much, I am glad you enjoyed it! Also, thanks for the encouragement :)

[@geobrume5416]

Fantastic

[@ahmetozkankul1457]

thank you Geo GIRL

[@GEOGIRL]

Of course!

[@ahmetozkankul1457]

@@GEOGIRL I watched the video. it was very useful for me. thank you very much🙃

[@praveenprince1313]

Good stuff and content , Thankyou so much love from INDIA♥️

[@GEOGIRL]

Thanks so much, so glad you found my content helpful! :)

[@ahmadmujtaba2893]

Which book would be good for Depositional enviroment for detail study ?

[@ammar1506]

Hello, can you help me send any article or book that explains in the diagrams what I talked about during the video about the Delta

[@markvibe2110]

Damn, i just found your channel. Hello from Philippines 🌺

[@GEOGIRL]

Hello! Great to have you in my audience, I hope you enjoyed this video and will check out some of my others ;) Let me know if you have any topic requests for future videos! ;D

[@markvibe2110]

@@GEOGIRL oh, can you make a sort of video about groundwater aquifers, or river morphology I guess, that would be great!

[@syahirahadeq2738]

what is the name place of the delta stratigraphy u use??

[@davidrogers8030]

Too much to take in on one pass, in a good way.

[@haseebahmed3258]

nicely collected data but too many cuts in the video {audio} , work on it ......... best of luck

[@GEOGIRL]

Thanks, and I know haha I am an academic not a video editor so I know it's not the best 🤣 but I am working on it, getting better slowly but surely. ;D

[@haseebahmed3258]

@@GEOGIRL No doubt Your content is worthy . Just speak little slowly as well 😀😊

[@onlyfact1115]

I am from India and I have doubt related to sedimentary. May you share your Gmail account