Lets say in 500 million years another intelligent species evolves...

>What happens if you bury a city under a fuckton of sand and put an ocean on top of it? fossilised city?

There's a good chance that won't happen in the time geological time frame that humanity has left. All our stuff would be gone long before something of that magnitude would happen, if it is going to happen.

Or trash we left on the moon

500 million years from now this rock will be uninhabitable on land for anything that isnt an arthropod.

...

>highly unusual distributions of radioactive isotopes
>perhaps some residual evidence of etchings of Mount Rushmore
>as another user said, cut diamonds and precious gems

as soon as they arrive at a theory of how metal ores form, they'll notice how the crust does not contain them in the expected ratio, because we got to all the easily removable ones. some will propose an ancient chordate civilization; these will be labeled as total nutzoid tinfoil hat conspiracy theorists.

As of now? Nothing will exist long enough to reach the 500 million year mark.

Check out Life after People.

Some stuff would be preserved if in the right geological environment at the right time. People in the future would assume we were clusters of primitive tribes with some basic agriculture and based on some pieces of fabric and old browned/yellowed clothes they would assume we dressed very lightly and dirty rags. Based on the jewelry survived they would assume we worshiped cats and some still undiscovered egyptian tample would prove that we worshiped cats for tens of thousands of years. This would again lead them to believe we were not as primitive as they thought and we had basic knowledge of mathematics, metal working and architecture.

as the discoveries pile up they build an image of a primitive hairy bipod being with tools in his hands. At a point they find a cemetary full of dead people and assume we have a deep respect for the dead and we barried them together with a piece of stone with some squigly lines written on them to guide then to the afterlife

now every now and then they will find a jewelry piece in the chape of a plane or a car and will asume that since we were too primitive to understand any of that, aliens had to come and show us technological miracles. This will only be proved by found radioactive isotopos in relatively high concentrations at specific parts of earth where the aliens probably had their landing pads because of common circular patterns in some of the places.

Soon there will be claims that all of this happened approx. 6000 years ago because according to their creation story it had to.

This is all in the timeframe of

wtf where is that from?

looks like a road but could just as easily be a bunch of old cars parked out in a forested lot in the pacific NW

plastic wouldn't last 500 million years either, Einstein.

Infrastructure would undoubtably leave a fossil foot-print. As would highly upconcentrated elements with no reasonably geological origin. Human burial practices also make for better chances of preservation than just dying in the wild and being eaten by animals.

Otherwise, 500 million years is a long ass time, and I am assuming a cataclysmic wipe-out of humanity or at least a total collapse on a much shorter geological time-scale.

All of our cities and monuments would probably have been scrapped clean by glaciation or ground down to nothing by the movement of the tectonic plates.

Of course. We'll just leave them a message.
en.wikipedia.org/wiki/Superman_memory_crystal

This rules

The best way to leave them a message is to engrave it on the moon and fill the moon with all sorts of tech and such.

Because of shifts in the tectonic plates, 500 million years offers 0 security in any message medium left on Earth. The moon will have moved about 11,806 miles further away from Earth, if the rate stays steady. So, that won't be too much of a problem.

I mean we can look back to the formation of this planet, and when first life arose about 3 billion years ago. Some intelligence can infer our existence same way we infer the existence of creatures so long gone.

assuming not all evidence is lost to subduction and weathering, we'll probably leave behind a thin layer of claystone breccia, in which every conceivable signature (isotopic, metal content, ...) goes off the charts

it'll also likely be a strong biostratigraphic horizon, at which many paleofauna taxa disappear

This bait though

>Lets say in 500 million years another intelligent species evolves. Is there anything chance of the knowing humans existed?

>500 million
maybe if they dig really deep underground and find some random shit that barely managed to survive.

Pyramids might still be... somewhat intact, question is if they're still on the surface though.

en.wikipedia.org/wiki/Oklo

It's already explained by natural phenomena, and it certainly wasn't a civilization that did it because a civilization that's producing energy is a civilization that's using energy, meaning it would need a way to collect, store, and transmit the energy using more exotic materials than the common dirt surrounding the mine.

Styrofoam cups

if not for one mammalian ancestor surviving the mass extinctions of the past, next in line for world domination was the cephalopods; the octopus.

>if we leave the earth in a state which is still relatively habitable to current forms of life, octopus is likely to dominate

>fuck the children

>what kind of world are we going to leave for the octopus?

For year I been saying we don't need to worry about global problems like ocean acidification, because who care about human children.

But now I see a need to act.

Think of the cephalopods!

>be octopus on recently deserted earth
>human cities are now underwater
>find thrift-shop full of mason jars and cabinets
>open them all
>goodtimes.jpg