Lake Erie's Long Point is outlined in turquoise in this natural-color satellite image. The pale color is likely due to limestone sediments in the shallow waters getting resuspended by a seiche or other disturbance.

https://t.co/TZ1Od5hsE8

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La geóloga Florence Bascom (1862-1945) nació un 14 de julio.
Fue experta en cristalografía, mineralogía y petrografía.
Demostró petrográficamente que rocas consideradas sedimentarias eran en realidad flujos de lava metamorfizados.
https://t.co/Oj36Bxml2h

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I’m excited to share our new paper, out now in . We used scales (denticles) preserved in coral reef sediments to reconstruct the pre-exploitation baseline of a reef shark community in Caribbean Panama. https://t.co/Sbl0sOm0J2 (1/18)

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Sable shaping up beautifully. There's much to love, but I think I have a fav: look at the vivid bands of sandstone! Sediment rings of deep time. Sable has everything to do with layers of history, archaeology & strata. The crushed temporal ribbons are a fantastic symbol of that.

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Hibernaspis

An armored jawless fish that looked similar to a guitar pick ,the serrated edges of its shield are the main way of telling apart the two known species

ALT: its believed that it would bury itself under the sediment of lagoons, possibly to avoid predators

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The 1959 discovery of the OH 5 skull led to the first K-Ar age determination of sediments at Olduvai by Garniss Curtiss. Finding them to be 1.75 Ma—triple the expected age—he wrote: "One thing is certain. Olduvai Man is old, old, old!"

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The majority of the Coccosteus' fossils were found in freshwater sediments

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"Geologische Übersichtskarte der Österreichisch-Ungarischen Monarchie" (1867-1871), first map including quaternary sediments, like ice-age windblown dust Löss

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The Zeeland Ridge Neanderthal was discovered in sediments extracted from the bottom of the North Sea. This is the first Pleistocene fossil hominin found under seawater. The partial frontal bone shows a lesion caused by an epidermoid cyst.
https://t.co/6c1NsFVoGe

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Day 2 showcase featuring ancient microbes and sediment DNA

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Announcing a new issue always brings a warm feeling, and this one is full of imaginaries, life, resources, hidden infrastructures, sedimented histories, buried architectures, critical and contested sites ☄️ it’s the Underground issue https://t.co/6si0Vddf55

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Morturneria, an antarctic Aristonectine, sucks up krill resting on the bottom of some sea ice. Morturneria was a supremely weird filter feeder, sifting through sediment to feast on small invertebrates

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Megarachne

A mid sized eurypterid, it fed by raking trough riverbed floors looking for small hidden prey hiding in sediment

alt: its original specimen was confused as giant spider due to it being incomplete, ironically its one of the most complete specimens of its era

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Fossil remains are often distorted when we find them, by natural weathering, moisture, or the weight of sediments that build above them. Sterkfontein, South Africa, has a complex array of depositional environments that left their mark on the fossils.

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They didn't had idea... HOW FAST I AM, BOIIIIIIIIIIIIIIII! And you must be wondering: "Wait, Where's Sedimentary?"

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In the deep sea the crushing pressures had created this being from sediment. It was the first time pure light had lit up this suffocating darkness.

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Megalograptus

An early eurypterid recognized by the large spiky appendages, when originally discovered it was confused as ancient writing due to its long spikes

ALT:its unknown what the large spikes where used for, probably to rake trough sediment looking for hidden prey

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And here its Duamant, a ghost/rock monster!

They obtain sediments from the ground in order to create an innocent-looking creature, which they use as a bait to lure their prey and as a shield to prepare their offensives. They have an enviable intelligence.

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