Radioactive decay and dating rocks
Radioactive decay and dating rocks - feast of love subtitrat online dating
Igneous rocks form when molten rock (magma) originating from deep within the Earth solidifies.
Once the Flood processes ceased, C-14 began a slow build-up to equilibrium with C-12—a build-up not yet complete.Slow cooling means the individual mineral grains have a long time to grow, so they grow to a relatively large size.Intrusive rocks have a characteristically coarse grain size. A rock is an aggregate of one or more minerals; or a body of undifferentiated mineral matter.A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. A crystal is piece of a homogeneous solid substance having a naturally geometrically regular form with symmetrically arranged plane faces.Thus the ratio of stable C-12 to unstable C-14, which is known in today's open environment, changes over time in an isolated specimen. As long as the tree lives, it absorbs carbon from the atmosphere in the form of carbon dioxide, both C-12 and C-14.
Once the tree dies, it ceases to take in new carbon, and any C-14 present begins to decay.
Since it would only take less than 50,000 years to reach equilibrium from a world with no C-14 at the start, this always seemed like a good assumption.
That is until careful measurements revealed a significant disequalibrium. All the present C-14 would accumulate, at present rates of production and build up, in less than 30,000 years!
Extrusive igneous rocks are formed from magma that cools and solidifies at or near the Earth’s surface.
Exposure to the relatively cool temperature of the atmosphere or water makes the erupted magma solidify very quickly.
Thus the earth's atmosphere couldn't be any older than this.