#sediment

[mindblowingscience]

According to highly cited conventional models, cooling and a major drop in sea levels about 34 million years ago should have led to widespread continental erosion and deposited gargantuan amounts of sandy material onto the ocean floor. This was, after all, one of the most drastic climate transitions on Earth since the demise of the dinosaurs. Yet a new Stanford review of hundreds of studies going back decades contrastingly reports that across the margins of all seven continents, little to no sediment has ever been found dating back to this transition. The discovery of this globally extensive gap in the geologic record was published this week in Earth-Science Reviews.

Continue Reading.

[teathattast]

Downloaded Neko Atsume 2 which then opened the door to an Office Cat idle sim and a Cat Cafe sim... I guess you can say I'm a pro gamer

[owtechnolich]

I think Sed could help Diaspore beat the shit out of Cordie.

(I needed a third hatchling so my friend @inkycorvid offered their hatchling oc, sunstone)

[andrewmbond]

Sediment Detail 2.7

2024

[geologyjohnson]

New video!

There's new(ish) video up on youtube giving a quick guide to sandstones. This is the same video I uploaded last year, but I've cleaned the audio up so that you can actually hear what I'm saying now!

You can check it out below

[susurrosvolcanicos]

[angstybreadstyx]

Some recent microscope photos! First two are sand and the eyeball lookin one is fossil sponge :)

[calciumcarbonater]

Here are some ripple marks from a beach in the Northwest Scottish Highlands! There’s a chance that these ripple marks will be preserved like this and become sedimentary structures that we can see as cross-bedding in an outcrop someday!

[bentboxxx]

[wayti-blog]

"Studies of gravity variations at Mars have revealed dense, large-scale structures hidden beneath the sediment layers of a lost ocean. The analysis, which combines models and data from multiple missions, also shows that active processes in the Martian mantle may be giving a boost to the largest volcano in the solar system, Olympus Mons. The findings have been presented this week at the Europlanet Science Congress (EPSC) in Berlin by Bart Root of Delft University of Technology (TU Delft).

Mars has many hidden structures, such as ice deposits, but the features discovered in the northern polar plains are a mystery because they are covered with a thick and smooth sediment layer believed to be deposited on the ancient seabed.

"These dense structures could be volcanic in origin or could be compacted material due to ancient impacts. There are around 20 features of varying sizes that we have identified dotted around the area surrounding the north polar cap—one of which resembles the shape of a dog," said Dr. Root. "There seems to be no trace of them at the surface. However, through gravity data, we have a tantalizing glimpse into the older history of the northern hemisphere of Mars.""

continue reading

[sakuraswordly]

Souce: Geomorphological Features

A beautiful illustration from the Chaco Culture National Historical Park geologic report shows detailed channel features, which highlights fluvial dynamics and sediment transport patterns in the area.

http://npshistory.com/publications/chcu/nrr-2015-1045.pdf

Figure 33!

[somethingusefulfromflorida]

Is ceramic technically a sedimentary rock? Because clay is just sand that has been ground down to microscopic size. All it is is sediment that has been cemented together quickly rather than over a geologic timescale. On that note, is cement a sedimentary rock?

[flying-fawn-fr]

Ancient Assembly Day!

Decided to show off my permababies for this!

UnoFlip | Skift | Zeugma

Sediment | Methisto

Laef | Zozasa | Brass

Bottomfeeder | Squeak

[sagent-of-chaos]

i need a brain to pick

[techno-toister]

sedi and alien

redesigned sediment (again) and also adopted an oc from @boneless-eggnog