Geodoxa aims to train the next generation to scientific controversies related to the natural history of our planet. We have set the goal to give back the colloquium these controversies deserve. To achieve this goal, Geodoxa produced videos with the collaboration of geologists, geographers and palaeontologists to bring new light to the mysteries of the earth. Geodoxa aspires also to be an open source platform to any guest who want to collaborate. In other words, for all theories, both antagonists and protagonists are welcome.
Desert dunes have exactly the same shape and size as dunes other places in the world where there have not been deserts. They can also not be formed by wind since they contain rocks.
You seem to be very interested in this. Maybe you would like to calculate the water depth and wave height based on ripple dunes in the Sahara? You can see several examples of interference ripples from shore reflection. Dunes are often 2 kilometers apart.
Your analysis of the processes is great, but drumlins have nothing to do with glaciers. You can find exactly the same patterns in Australia, the Sahara and the Gobi deserts. In fact you can find them all over the Earth. They are caused by fast flowing water. Follow the vectors of the drumlin fields in North America and you will find that they travel in a general south west direction from Baffin Island to Baja. There are also several interesting mixing regions in northern Canada where flows have collided.
So it is literally caused by flowing water. You don't need ice in this model. Such drumlins can be found all over the Earth, even where there have never been glaciers.
I am not a Geologist so perhaps I'm missing the point . If your theory was regional I would think "Interesting another insight" but at you present it as a universal argument against universality then you need to do more than compare evidence. Fore a start what mechanism could possibly cause a global uplift in the mid Triassic. You do not even mention Marble deposits . When lime stone is transmuted it becomes Marble so when looking for Ancient coast lines I would expect it to be a primary tool. The fact that Mountain Building has been shown to be a Biological consequence surely means that you do not need to replace Universality only realise that rocks that are pree mass Biology would be less inclined to flow i.e. build mountain ridges or any other form of folding or stretching. The older you are looking at the less evidence you are likely to find so you should start in the spirit that "A lack of evidence does not meen evidence of lacking" Interesting video, nice graphics!
It would be good to see if there is a statistical bias against topographic preservation in any way, as anecdotally preservation of paleo landscapes is common including major unconformities, for example: The weald basin is bounded to the north and west by the eroded and reburied remnant of a mountain chain. The shape of this paleo topographic feature (part of the hidden Caledonian mountains) influenced the formation of the coal fields of England, Wales, northern France and potentially also other parts of Northern Europe. Coal being deposited in geographically constrained areas due to the paleo topography is also common. The top of these coal fields are also not always flat. Lower deposits within the basins of southern England include lava flows (to the west) and alluvial fans bordering the edges of the basin. Above these are unconformities that preserve these features. In a separate basin further east the crediton trough is an infilled paleo valley (1km deep) bounded by faults. Towards exmoor there are pipe intrusions and lava flows that have been preserved and re-exposed. A paleo shoreline exists in South Wales as does paleo karstic topography including infilled / collapsed caves. Karstic topographic preservation is also observed in the chalk which surrounds the weald. Most commonly conical depressions infilled with the overlying sands. The erosional gap between these two units spans the K/PG boundary. More modern (last few million years) sinks and infilling is also present. The unconformity at Siccar point also shows an undulating topographic surface. As such whilst there may be a bias for smooth or flat unconformities, (is there evidence for this?) topographic variation influencing local stratigraphy and preservation of topographic features at unconformities are both common. Unconformities are often not flat or continuous.
Hello S. Thanks for taking the time to reply with this good tread of yours. We are gathering papers on paleo karst with some field trip footage. Paleokarst tend to be quite small in comparison with today's. Paleolandscapes are also compiled along with the ones detected in the seismic surveys. It is our intention to visit again South of Wales. So, if you have any papers to suggest on this topic you can write at www.geodoxa.com/contact. For Siccar Point, many have been intrigued by the lack of alteration along this unconformity. So, I return there to find some strange deformation of the Devonian soft sediment by the tectonic differential sliding between the slabs/strata of the underlying Silurian. This is just a summary video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-bVAjyVUmcJk.htmlsi=7BDSm0iPd3Vj3aGi as a teaser to invite the different Societies or Faculties for future visits, advice, and collaboration before any new publications... Don't hesitate if you have any questions or references to share.
There is not enough presentation of the academic background of each theory. Not much is needed, it is more about gaining some key facts that allow for anyone to research for themselves.
Wow, these are some of the best visualizations of geologic change I have seen on RU-vid! I would love more info on your tools and process for creating simulations and visualizations.
he appears to be confused by the flat nature of sedimentary rock layers in the geological time scale. I believe he is presenting a suggested fact that all ancient seashore lines have been lost to erosion and he is saying that is a paradox…. I guess…
he says rocks should fossilize and his other channel is subjected astrology so I would call this extremely suspect source material. I mean besides the fact it is a random robot on youtube.
Belle vidéo, mais le commentaire est difficile à suive. On arrive à la fin de la vidéo et se demande..."Où veut il en venir?" Faire un plan d’exposé est important. Également une petit détail, vous montrez des vues du Grand Canyon et ça n'a rien avoir avec l'action de la mer mais est dure à l’élévation de la plaque Américaine.
S'il n'y a pas de trace de littoral, cela amène à penser, aussi idiot que cela puisse paraître, l'absence de mer, ou, au pire, l'absence totale de vent. Pas de houle, pas de ressac, pas de mouvement, pas d'érosion. Je sais que cela a l'air absurde, mais je cherche. Je suis tombé sur ceci : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-aFP6JQQdzIM.htmlsi=NgINgcd7Nh4SuPGu&t=489 où il dit également que les sédiments se déposent dans une couche au fond d'une eau absolument sans courant. C'est au carbonifère.
Alors après une vidéo comme celle là (qui nous laisse un peu sur notre faim) Il va falloir nous parler des brèches, tillites et poudingue ! Oui je suis sûr qu'un bon poudingue de base s'aura nous rassasier sur les endroits où se cache nos anciens littoraux 😉
Toi aussi tu as remarqué ? En Australie, des roches en rives de 3 mds d'années . L'histoire de l'inde, les points chauds, Il y a eu des épisodes de mouvements plus rapides, mais à quelle fréquence et avec quelle violence. La vie trouve le chemin.
Lake Argyle dans le nord ouest de l'Australie est un exemple d'un paysage protozoique étrangement préservé. C'est un sujet traité dans nos prochaines vidéos avec les DEM 3D de leurs topographies.
Je ne suis pas convaincu par votre argument qu'il n'y a aucune surface ancienne préservée nulle part. Un manque d'évidence n'est pas la même chose qu'une évidence de manque. Et une discordance, n'est-ce pas précisément par définition là où il y a eu une énorme érosion qui a effacé des périodes très longues? Par exemple lors des périodes glaciaires. Ce n'est pas la même chose que l'érosion par l'eau et ne préserve rien.
Nous apprécions ce commentaire car nous sommes conscient du défi. Disons une surface qui témoigne d'une érosion et altération par "un long vieillissement" comme nos reliefs actuelles. Nous essayons de filmer toutes les disconrdances du monde entier ou de consulter toutes celles étudiées dans les publicaitons. Il y a deux exceptions pré-tertiaires, une en Mongolie et une à Hudson Bay. C'est la conclusion de Markes Johnson avec son équipe qui sont les experts mondiales dans la quête des anciens "rocky seashore". Dans la série nous verrons ces discordances. Nous verrons aussi le fameux Siccar Point en Écosse.
Remarquable. Un grand merci pour la qualité des images, des animations et du commentaire. Ce documentaire est exigeant pour les non-spécialistes (dont je suis) mais il pousse à la prise de notes et à la recherche personnelle en vue d'approfondir la maîtrise du vocabulaire et des notions abordées ; il pousse ainsi naturellement au nouveau visionnage. Bravo pour la diction et le choix d'un rythme posé ! Un abonné de plus... J'espère seulement que vous maintiendrez la version francophone ! 😃🌍
N'hésitez pas à nous contacter pour vos questions www.geodoxa.com/contact . Geodoxa est open source. Après l'approbation de nos experts les versions prochaines seront + vulgarisées.
jadore votre video merci! je suis certain que avec qq1 qui ferais la naration avec un peu plus de details le video ferais fureur avec bcp plus de vue. je dis ca simplement question que ca rejoindre plus de monde, encore une fois super video, avec explication( moment sur pause avec les couleurs). merci!
👑 You should made a similaire top quality geologic animation video like this but to explain de formation of Gold veins, quartz with Volcano and after like this video the deposit in the rivers and your channel be very popular in this time.🏆ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-P2tUxUB9-jg.html A universitary video level top quality like theses but for 30 min to 60 min. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Gfe_-UCIuGk.html
