What is radiometric dating yahoo answers

That uranium, which was created during a supernova that occurred long before our solar system existed, lingers in trace amounts within Earth.

They point to a catastrophic origin for granites, consistent with the biblical timeframe for earth history and God’s judgment during the Flood.For millennia, humans assumed that Earth was about as old as we were. Those dating methodologies didn't hold up to modern science, as it eventually became clear that the birth of our planet far pre-dates the origin of humankind.Rather than assume the planet was the product of bygone catastrophes, such as a massive global flood, scientists could explain the ancient rock record with phenomena that exist today.This spawned several earnest — if not entirely successful — attempts to determine the age of the Earth based on ongoing natural processes."It is perhaps a little indelicate to ask of our Mother Earth her age," he wrote in his introduction — then proceeded to reveal that she was roughly 1.6 billion years old.

When Holmes presented the findings at a meeting of the Geological Society of London two years later, he was "violently attacked" by critics.

One calculated how long it would take rivers to deliver enough dissolved minerals to the ocean to give it its current saltiness (answer: 90 million to 100 million years).

Others looked at the average rate of sedimentation and concluded it would take anywhere from 3 million to 1.6 billion years for the rock record to reach its current thickness.

But the big breakthrough came with the invention of radiometric dating.

Shortly after radioactivity was discovered in 1896, scientists realized they could figure out how old a rock was by measuring how much of the uranium in it had decayed into lead.

Most people think that radioactive dating has proven the earth is billions of years old.