NASA Earth Observatory image of the day

Cañon Fiord’s Whirling Waters

https://science.nasa.gov/earth/earth-observatory/canon-fiords-whirling-waters/

Credits: images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey.

#Earth #NASA #NASAEarthObservatory #science #news #CañonFiord #CanadianArcticArchipelago #Canadian #Arctic #Archipelago #ice #sediments #water #waters

RE: https://mastodon.social/@arstechnica/116108759807158445

Which #geochronological #method helps to determine the #age of #sediments as precisely as possible in order to reconstruct biotic, ecological, and #climatic relationships over the course of geological eras? R. T. Tucker et al. (2025) were able to precisely date the #eggshells of non-avian #dinosaurs using a novel LA-ICP-MS U-Pb #calcitedating method. This enabled them, for the first time, to date the Upper Cretaceous strata of the #GobiBasin (Mongolia) radioisotopically.
©This text#StefanFWirth

SYMPHONIE COLORÉE
Ça tangue dans la baie comme ça tangue dans ma tête ! J’aime jouer avec les mots comme j’aime jouer avec les images. À marée basse le Mont-Saint-Michel s’amuse de son reflet sur le sable mouillé, la « tangue* » grise et les algues ruisselantes. Nous connaissons tous ces images qui font la promotion du Mont. Je n’aime pas beaucoup les refaire alors je tente autre chose qui n’a rien à voir…

Lire la suite sur mon Blog : https://blogimages.fr/symphonie-coloree/photos/

#Sédiments #Algues #Sable #Mont-Saint-Michel

A thought-provoking and wide-ranging talk yesterday by Andy Wickert, University of Minnesota.

His group has tracked changes in drainage patterns during the final deglaciation of Minnesota (~11 thousand years ago) to changes in erosion rates since the advent of mechanical agriculture.

#UMN #McGillU #Minnesota #MississippiRiver #Glaciation #Sediments

Hwangto (Pedology 🟤)

Hwangto, a Korean loess soil, is a yellow-coloured soil, which contains high levels of potassium chloride and calcium. Hwangto is sometimes called a 'living soil' for its medical effects. Korean loess called “Hwangto”or “the red yellow soil or earth” has been a basic element or nourishment which has cultivated Korean nature and cultural heritages. Hwangto reve...

https://en.wikipedia.org/wiki/Hwangto

#Hwangto #Pedology #Sediments #Glaciology #TypesOfSoil #AeolianLandforms

#WeekendReading: Hennebert and Lees on environmental gradients in carbonate #sediments around the North Sea. It's a rather early work I missed until now, it has its shortcomings, but there are some interesting things there.

Link: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-3091.1991.tb01012.x