Thus illustrating the old adage that Europeans think 100 miles is a long distance, and Americans think 100 years is a long time.
It would be difficult to build a brick house without a concrete foundation. And very few houses of any kind can be built without some kind of concrete to form a foundation. Even if there’s no concrete somehow the mortar for bricks will contain sand.
Yeah, but sand doesn’t *have *to be more than a few thousand years old.
Virtually every drop of water on Terra existed a few billion years ago so what’s mixed in our modular house’s concrete foundation is a good candidate for “oldest stuff here”. Otherwise… I have some millennium-old pottery.
Not really. Water is constantly being recycled, including spending time in organisms as things other than water and spontaneously breaking up on it’s own. “Water” has been around for billions of years, but specific individual molucules haven’t.
Isn’t hydrogen primordial? There’s pounds and pounds of it in a typical house, in water of hydration in any cement or drywall, in wood, in polymeric plumbing and wire insulation, all over.
Yes, but the OP asked for “materials”, not atoms.