That's not the gotcha OOP seems to think it is. If the world was magicked into existence by a supreme being 4000 years ago, there's no reason it couldn't have been magicked into existence with heavy elements having decayed by an arbitrary amount or Pb by itself. 'Tis the problem with invoking appeals to magic. And anyway a quick look on wiki says that primordial Pb was mostly created by neutron capture of lighter elements, not radioactove decay of heavier ones, so the mere existence of Pb proves nothing wrt the timeline of U decay anyway... but at that point if you're bringing nucleosynthesis into it, you may as well point to anything higher than lithium or even atoms as a concept as "proof" rather than picking anything as exotic as uranium decay.
Being a scientist myself, this argument is not very good. The believer can just say that god created lead as well, and didn't wait for it to be created by decay. If god can create a universe, why shouldn't they be able to create some lead?
Exactly! In fact, we know that the universe was created in media res so that light photons allegedly streaming to us from thirteen billion light years away in mid transit with the exact amount of red shift it would have from that object retreating away from us due to cosmic inflation, was in fact created by God 2000 in route in the (great) void of space so that it would smack not just into the dot that is Earth, but some dude's telescope and spectrum analyzer.
In fact, I wasn't born fifty seven (and some days) years ago. I was born this last Tuesday when the universe was created with everything in motion.
Can blame it on the devil, or can say it's just a test by God. Anything from old rocks to fossils to light from distance stars created enroute. Using science to debate someone who doesn't understand science or thinks it's all a trick isn't going to work.
The only thing that you can use to convince someone who is dead set the Bible is the only truth is...the Bible. And even then they'll use gymnastics, but at least they can't just discard the source of evidence like they will anything else. If they bend over backwards to keep the Bible valid, then you know you'll waste time trying to debate them.
I had a creationist professor who had a whole bunch of bullshit specifically intended to "debunk" aging using Polonium half-lives, etc...
You'll never "disprove" it for them, because they don't want it disproven. They'll just find the relevant page on Answers in Genesis/Ken Ham's website written by someone with a Ph.D. from Pensacola Christian College and consider it done. They're not in it to actually find the truth. It's not a good-faith discussion/debate.
I had a "Creationism vs evolution" class because I did one semester at a religious college before realizing I wasn't religious. It was about what'd you'd expect, and no, the credit didn't transfer to a real college
Yeah, this post is not fully correct. The lead nail in the coffin is not that lead exists, it's that we find it in certain mineral matrixes that don't form with lead.
Zircon is the most widely referenced mineral in uranium-lead dating, as the mineral rejects lead during its formation, but will incorporate uranium.
So when we find zircon with lead in it, it means that the uranium has decayed and turned into lead while being stuck there, and the percentage of uranium to lead in a sample lets us determine its time of formation.
I'm fairly certain this is leaving out important details. I believe it decays into a unique form of lead with a different number of either protons or neutrons. The actual numbers I could not tell you as I'm remembering this from high school.
It's a different isotope, so different number of neutrons. If the proton number would be different, it would be another element altogether, since the proton number defines what element it is.
Lead existed more than 4000 years ago, but that doesn't prove it was part of Earth that whole time. Most of the planet existed in some form before it coalesced into the planet. 😌
Stellar element synthesis is where most elements, iron and below, form. Hydrogen, the most common element, fuses to Helium, Lithium. There are more cycles to stars burning elements, Carbon-Nitrogren-Oxygen Cycle, and a bunch of other stuff, all the way up to Iron. After Iron, nuclear fusion can no longer sustain the star, and it collapses into a neutron star (or any other intermediary ranging from hypothetical quark stars to black holes).
On collapse, you get a supernova. Supernova and other high energy events (called Gamma Ray Bursts, usually attributed to Supernova anyway) explode in a shower of neutrinos and gamma rays. These neutrinos rarely interact with matter since they have no charge, but they still contain a lot of energy, traveling near the speed of light. Gamma rays are the highest energy photons. Anything either particle interacts with will change it.
The collision of the gamma rays burst and nuetrinos with interstellar matter creates the remainder of the elements, much in a similar way we do on earth to create the synthetic elements (like plutonium).
Any isotope can be created this way. Isotopes that are unstable then decay until they become something stable - Uranium -> Lead.
The universe is so old that enough of these elements were able to gather by gravity, forming the relatively tiny deposits we can find on our planet.
If you want a technical approach then you want to talk about Rapid Neutron Capture and GRB. You'll find that kind of talk here. Warning: When you start digging deep into scientific explanations you discover that there's more we don't know. As the article ends with the idea that our current working theory of r-process doesn't happen often enough to explain how much gold we have so there's likely at least one other way gold is created in the universe. Welcome to cutting edge science!
The assumption is that the only way lead can exist is via a series of radioactive decay. It is a way. It is generally created in stars by a much more direct process, not through radioactive decay.
I am not claiming to be a professional particle physicist, and I don't have my high school chemistry textbooks memorized so I can't quote the exact page where Rapid Neutron Capture creates heavier elements that doesn't go immediately to radioactive elements first.