When looking at a geological timescale, typically ‘the deeper you dig, the older stuff gets’, right?
So, where does this buildup of new sediment come from?
I understand we’re talking about very large timeframes here, but I still dont really get it.
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Absolutely not an expert, but here’s something that made me realise/understand.
I recently moved out the the country. The garden was not laid with turf, and for various reasons we didn’t get around to it in any kind of rush. Within a month or two of spring coming, the nice empty dirt field sprung up with weeds, at least four feet tall, and completely densely covered the whole garden.
It’s easy to forget when all you see is nicely mown grass lawns, but this is the more natural state. Imagine deep thick weeds coming up and dying off every year, and the amount of material that will leave behind. I think this is much more plausible than all of these people suggesting “dust” will just lie there.
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