So the idea that the Argon does not come out of the rocks very well, when water pressure is surrounding the rock, is extremely interesting! Metamorphism, weathering, and reheating are some of the processes that are mentioned to cause a loss of Argon in the crystal of a rock. Dalrymple thought that the foreign objects must have caused these lava flows to date with older ages. It is possible that the sedimentary layers in the upper Precambrian are also flood deposits See my Geology page.
Argon argon dating
- But there is no known mechanism to explain or predict the increased rate of radioactivity.
- Another possibility is that the second assumption is being violated rather than the third.
- There are other conditions outside of atmospheric conditions that this laboratory experiment can explore.
- These are considered by most Creationists to have been laid down during the time of the flood.
Also, the cheaper K-Ar method can be used for screening or reconnaissance purposes, saving Ar-Ar for the most demanding or interesting problems. Archeologists and scientists are dependent upon the use of dating methods to ascertain the approximate age of an artifact or ruin he or she finds. The Ar-Ar method is considered superior, dating roulette but some of its problems are avoided in the older K-Ar method. What conditions could have been present when igneous and volcanic rock was formed?
Scientific Theology by Paul A. Most scientists do not believe that the short chronology of the Bible has any validity at all and most would consider it counterproductive to pursue such a course of investigation. The material in question lost all its argon at an identifiable time, the reset time.
Potassium-Argon Dating Methods
Hornblende give the best date that agree with the evolutionary time scale, but biotite is much more abundant and can keep it's Argon under various weathering conditions. The seventh assumption is one that scientists are doing their best to fulfill. This way of doing science is most prominent when the evidence is fragmentary at best.
- The potassium-argon K-Ar isotopic dating method is especially useful for determining the age of lavas.
- Whole rock basalt lava and some report that ash can also be used.
- The fifth assumption is fairly safe.
- So Argon does not attach itself to the rock or any minerals in the rock.
- The heating only allows the Argon gas to reach equilibrium with its surroundings.
- When the concentrations of the various K isotopes are measured, the results are always the same.
Decades of basic research has given us this data. This is because there is no time for any new Argon to form, the only Argon present in the rock would be that which failed to get out of the rock when it was molten. The rock sample to be dated must be chosen very carefully.
According to most texts on Potassium-Argon dating, the third assumption is fairly commonly violated. Since K-Ar dating is so widely used, we might expect that many experiments would have been done to see how well Argon is released under various heated conditions. Before we start, dating site for ravers lets look at the specific K-Ar dating assumptions.
The problem is only limited by money, ingenuity, and the technical difficulties that have to be surmounted. They think of the long age scenario of evolution as being fact. Historical data can be so inconclusive that a host of positions is possible from almost any set of data that is collected.
Sometimes the whole rock basalt date is reported, but sometimes only a mineral fraction is reported from the basalt, like biotite or sanidine. Their assumption that the fossil is the same age as the surrounding rock allows them to do this kind of data collecting. The areas of science, which are the most successful, which the public notices, are the amazing discoveries in medicine, biology, space exploration, and the like. So, something inhibited Argon from coming out of these rocks. The second assumption sounds logical at first.
We should also be able to safely make this assumption. In addition, services some rocks may have been reheated so that the clock was partially reset or fully reset at a later date. Man is thought to have progressed through a long period of prehistory cave man's experience before some sort of civilization is started. The ratio of K to total K is constant. Many text books say it is self-evident.
We might also expect that hornblende and biotite, the most reliable types of rocks from an evolutionary perspective, would have been tested. One has to wonder why these kinds of experiments were not originally done. Don't take what is on this page as a scientific endeavor I am only looking at the evidence and then reporting what I have found to you. Unfortunately, with fragmentary data, things free the artifact that might falsify a theory is extremely hard in coming or it could easily be overlooked. Everything else would have been redeposited or re-melted in the global flood.
K/Ar) Potassium Argon Dating Techniques I
Within the Creationary flood model, we also might expect layers to be made underwater. They normally work within a fairly well defined set of theories that have become a paradigm. Plutonic rocks are rocks are rocks that have solidified below the ground. Thus these rocks give a date which is older than what normally would happen if the rocks were fully reset.
The rock samples are crushed, in clean equipment, to a size that preserves whole grains of the mineral to be dated, then sieved to help concentrate these grains of the target mineral. Then these rock samples are dated. What they do is to take samples of the rock layers above and below where the fossil or specimen is located.
They think that the radioactivity could have speeded up during the flood producing dates with long ages. When the rock is molten hot, it is more liquid in texture, allowing the Argon gas to escape. They are looking for answers that would fit their present model. Advanced instruments, rigorous procedures and the use of standard minerals ensure this. The data does not support long ages.
They do not believe that there is any alternative way to look at history. In addition to the above limitations of science, historical science is limited by the fragmentary nature of the artifacts it is able to find. In a vacuum, virtually all the Argon comes out of the heated rock. Secondly, Argon is usually a gas.
Thus, the amount of calcium originally present is not known and can vary enough to confound measurements of the small increases produced by radioactive decay. In practice, each of these values may be expressed as a proportion of the total potassium present, as only relative, not absolute, quantities are required. There is another group that has been conducting experiments for the express purpose of speeding up the transmutation process thus changing the half-life characteristics of radioactive materials. Most sedimentary rocks are thought to lose Argon because the crystal structure leaks Argon. This is probably the assumption that scientists make when they choose to present filtered data in a scientific paper.