Legend! Saved me a lot of time with this one, speeding through the basics of braided and meandering systems. Thanks!

@GEOGIRL

2 жыл бұрын

Yay! So glad to hear the video helped you out ;)

The presentation was delivered so well. It clarified certain ambiguities in my understanding of fluvial systems. I would suggest to make a video on evolution of river systems. Cheers!

Great and very clear presentation. Thank you!♥

@GEOGIRL

3 жыл бұрын

Thanks for the comment, I am so glad you found it helpful!

Thank you, you are a really good teacher. Great work really appreciate it.

Wednesday night boredom alleviated! I ❤️GEO GIRL

@GEOGIRL

3 жыл бұрын

Haha, having to watch old videos because I am not posting on Wednesdays? I love it! 😂👌

Great video thank you!

This is amazing!! Thank you

@GEOGIRL

2 жыл бұрын

Of course! I am so glad you found it helpful ;D

You're amazing! 🙏🏻

@GEOGIRL

2 жыл бұрын

Thanks so much, I am glad you enjoyed the video! ;D

I m student of igneous Petrology but your lectures are simply outstanding. The only problem is you speak too fast. When i slow down the speed then your voice sort of tear down further causing irritation. Plz speak little bit slow ☺️☺️

amazing video thank u!!!

@GEOGIRL

3 жыл бұрын

Thanks so much, I am so glad you found it helpful! :D

Thank you

Awesome Content !! LOVE FROM INDIA

@GEOGIRL

Жыл бұрын

Thank you! ;D

Great vid. Don't forget helical flow, which is flow perpendicular to the general direction of flow in meandering channels. Helical flow is a large driver in sediment transport, as it is effective at churning up those sediments.

@GEOGIRL

2 жыл бұрын

Oh interesting! Thanks for sharing, I didn't know that. So helical flow would be classified as turbulent, right? Or would it be in a whole different category?

@Get_to_the_Point

2 жыл бұрын

​@@GEOGIRL Yes helical flow occurs during turbulent flow. If you watch a meander bend during flooding, you will actually see helical flow in addition to backwater flow. During flooding, backwater flow often occurs on the point bar...you will see water flowing upstream. This is one of the reasons that velocity decreases as floodwaters rise...it creates more turbulence. I think you mentioned velocity decreasing in larger flood events in the vid but I'm not sure.

@GEOGIRL

2 жыл бұрын

@@Get_to_the_Point Oh interesting! I am going to have to go watch some flood videos now! haha Thanks for sharing your knowledge, I hope many people stubble upon this comment so they can learn what I didn't know to teach them ;)

@Get_to_the_Point

2 жыл бұрын

@@GEOGIRL The true measure of intelligence is the ability to explain complex things to simple people, and they understand it. This puts you above Einstein in the IQ Dept ! Rock on !

@GEOGIRL

2 жыл бұрын

@@Get_to_the_Point oh my gosh! You are too sweet, thank you so much! ;D

Thank you for information

@GEOGIRL

2 жыл бұрын

Of course, I hope you found it helpful :)

Wow amazing 😎

@GEOGIRL

2 жыл бұрын

Thanks! Glad you thought so ;D

Pleistosendeki 4 buzul dönemi bilhassa Würm buzulu sonrası gelişmeler ilgi alanımızda...Holosendeki transgresyonun çok yönlü tetkiki devam ediyor... Saygılar sevgiler....

@GEOGIRL

2 жыл бұрын

Thanks for the suggestion! If you haven't already, I suggest you check out my Pleistocene - Holocene video: kzread.info/dash/bejne/pJeL15OGpNnfgMo.html But if you watch that one and still want me to go more into detail on the glaciations during that time, I would be happy to, just let me know ;)

@omeryalcnsar2391

2 жыл бұрын

@@GEOGIRL Çok teşekkürler ediyorum...yarından itibaren PANGEA da Senin paylaşımlarını yayınlayacağız ...alâkan için çok teşekkürler... Saygılar sevgiler....

I really want to know about the chemestry of pottery and concrete...

How can we recognize the old from the recent deposit? Does the fluvial system respect the stratigraphy principle?

@GEOGIRL

2 жыл бұрын

Well if you mean recent as in modern, then there would still be a river there... Whereas, an ancient stratigraphic section indicative of an ancient fluvial system would not have a river there and would contain consolidated, compacted, & lithified sediment rather than unconsolidated sediment. If you mean recent as in ancient, but relatively young compared to another outcrop, then you would have to find a way to date the strata in each outcrop to compare them. Unfortunately, sedimentary materials are not easily dated unless they contain fossils indicative of a certain time period (index fossils) or strata that is volcanic in origin (e.g., volcanic ash) which can be dated using isotopes. So it depends... But the good news is, in ancient strata, there are typically layers either above or below the un-date-able layers that will give ages with which you can constrain the age of your middle strata if that makes sense. Regarding your second question, I am not aware of a single principle of stratigraphy, but I do know of the principles like Steno's laws (superposition, original horizontality, lateral continuity, etc.). If you are referring to those principles, then yes, fluvial systems obey those. Hope that helps ;)

Geo Girl you beauty ..

How to recognize point bar deposits from outcrop or core data and how trough cross bedding formed in fluvial system, .thanks

@GEOGIRL

2 жыл бұрын

For a point bar sequence, I would look for a fining upward sequence with cross strat lower in the section, then ripples further up, and then interbedded mud at the top representing the floodplain. Cross bedding is just the bedding that results from migration of ripples/dunes. Trough cross bedding forms in these settings due to the increase in velocity at the inner bank of the curve, this is where the bank interferes with the flow enough to deposit ripples that migrate in a way that cuts across one another (trough cross bedding). At least that's my understanding, I hope that helps a little bit. I think you may find this video: kzread.info/dash/bejne/mKGFuqmNYtK7ntI.html helpful (it's my sedimentary structures video where I talk more about these structures & depositional environments). :)

@mazenomar7279

2 жыл бұрын

@@GEOGIRL many thanks for your quick responce.

@GEOGIRL

2 жыл бұрын

@@mazenomar7279 Of course ;)

Good presentation, I am currently following your videos, hope collobartion with you, best wishes from Ouargla university, Algeria

please please please speak slowly

@GEOGIRL

Жыл бұрын

Thanks for the suggestion, I know I was really bad about this for a while, I hope i've gotten a bit better in my more recent videos haha

@mohamedashrafelsherif6458

Жыл бұрын

Your videos are amazing