Radioactive dating game help
The a- alpha particles emitted at high velocity by the disintegrating nuclides interact, because of their charge, with electrons of surrounding atoms which slow them down until they finally come to rest in the host material at a distance from their source that depends on their initial kinetic energy and the density and composition of the host. This could happen because of properties of the magma chambers, or because of argon being given off by some rocks and absorbed by others. Some information from an article by Robert H. Then we can average them to get an average age for this rock. Back to top An evolutionist said his experience is that whenever he looks into a creationist source, it blows up on him. But note that all of the haloes give young ages. There is some difficulty in determining the decay constants for the KAr40 system. This is about one ten millionth of the mass of the rock, a very tiny percentage. Back to top The following information was sent to me by e-mail:
Back to top In general, potassium-argon dates appear to be older the deeper one goes in the crust of the earth. Ground-water and erosional water movements could produce this effect naturally. This does not include dates from minerals that are thought to yield bad dates, or from igneous bodies with wide biostrategraphic ranges, where many dates are acceptable. It seems to me to be a certainty that water and gas will enter rocks through tiny cracks and invalidate almost all radiometric ages. This makes them appear older. So a rock can get a very old radiometric age just by having average amounts of potassium and argon. The reason for my request is that a correlation is not implied by the fact that there are only 10 percent anomalies, or whatever. In rubidium-strontium dating, micas exclude strontium when they form, but accept much rubidium. Or it could have other explanations. Now, consider an intrusive flow, which cools within the earth. This rather damaging result was explained away saying that enough evidence of correct radii for defferent geologic periods and sufficient variation in the same period have been obtained that one is forced to look for a different explanation of such variations as were observed by Joly. Print Scientists choose from two primary techniques to determine the age of artifacts and other objects found in the earth. Zircons exclude lead, for example, so U-Pb dating can be applied to zircon to determine the time since lava cooled. Still another evidence for problems with radiometric dating was given in a recent talk I attended by a man who had been an evolutionist and taken a course in radiometric dating. I believe that life was recently created. I think the most reasonable explanation is that this coal has an age at most a few millions of years old, possibly much younger, and that the geologic time scale is in error. Both of these tend on the average to have wide biostrategraphic limits, meaning that a large spread of ages will be regarded as non-anomalous. There must have been no incorporation of Ar40 into the mineral at the time of crystallization or a leak of Ar40 from the mineral following crystallization. Mica is thought to exclude Sr, so it should yield good Rb-Sr dates. The fact that rock is often under high pressure might influence this process, as well. The decay constant and the abundance of K40 must be known accurately. At the moment of formation, as two nucleii collide, the uranium nucleus will be somewhat unstable, and thus very likely to decay into its daughter element. Here is another quote from Woodmorappe about isochrons, since some people think that mixing scenarios or other age-altering scenarios are unlikely: In fact, a couple of the haloes have such low ratios as to imply an age in the thousands of years. Or if the continents split quickly, the observed pattern of dates could be explained by a decreasing concentration of Ar40 in the water.
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