How old is the earth? First published in Refuting Evolution , Chapter 8 Evolutionists fallaciously think that billions of years of time makes particles-to-people evolution possible. So Teaching about Evolution and the Nature of Science presents what it claims is evidence for vast time spans. This is graphically illustrated in a chart on pages 36— The Bible states that man was made six days after creation, about 6, years ago. So a time-line of the world constructed on biblical data would have man almost at the beginning, not the end.

The Fossil Record

Everything Worth Knowing About Scientific Dating Methods This dating scene is dead. The good dates are confirmed using at least two different methods, ideally involving multiple independent labs for each method to cross-check results. Sometimes only one method is possible, reducing the confidence researchers have in the results.

Download Potassium-Argon and Argon-Argon Dating of Crustal Rocks and the Problem of Excess Argon PDF According to the assumptions foundational to potassium-argon (K-Ar) and argon-argon (Ar-Ar) dating of rocks, there should not be any daughter radiogenic argon (40 Ar *) in rocks when they form.

These are K-Ar data obtained on glauconite, a potassium-bearing clay mineral that forms in some marine sediment. Woodmorappe fails to mention, however, that these data were obtained as part of a controlled experiment to test, on samples of known age, the applicability of the K-Ar method to glauconite and to illite, another clay mineral. He also neglects to mention that most of the 89 K-Ar ages reported in their study agree very well with the expected ages.

Evernden and others 43 found that these clay minerals are extremely susceptible to argon loss when heated even slightly, such as occurs when sedimentary rocks are deeply buried. As a result, glauconite is used for dating only with extreme caution. The ages from the Coast Range batholith in Alaska Table 2 are referenced by Woodmorappe to a report by Lanphere and others Whereas Lanphere and his colleagues referred to these two K-Ar ages of and million years, the ages are actually from another report and were obtained from samples collected at two localities in Canada, not Alaska.

There is nothing wrong with these ages; they are consistent with the known geologic relations and represent the crystallization ages of the Canadian samples. The Liberian example Table 2 is from a report by Dalrymple and others These authors studied dikes of basalt that intruded Precambrian crystalline basement rocks and Mesozoic sedimentary rocks in western Liberia. The dikes cutting the Precambrian basement gave K-Ar ages ranging from to million years Woodmorappe erroneously lists this higher age as million years , whereas those cutting the Mesozoic sedimentary rocks gave K-Ar ages of from to million years.

Woodmorappe does not mention that the experiments in this study were designed such that the anomalous results were evident, the cause of the anomalous results was discovered, and the crystallization ages of the Liberian dikes were unambiguously determined. The Liberian study is, in fact, an excellent example of how geochronologists design experiments so that the results can be checked and verified.

The final example listed in Table 2 is a supposed 34 billion-year Rb-Sr isochron age on diabase of the Pahrump Group from Panamint Valley, California, and is referenced to a book by Faure and Powell

The Evolution of Early Man

Manicouagan crater, Quebec, Canada is visible in the background. Exhumed paleoplains of the Precambrian shield of North America. American Journal of Science, , —

The potassium-argon (K-Ar) isotopic dating method is especially useful for determining the age of lavas. Developed in the s, it was important in developing the theory of plate tectonics and in calibrating the geologic time scale.

Departures from this assumption are quite common, particularly in areas of complex geological history, but such departures can provide useful information that is of value in elucidating thermal histories. A deficiency of 40 Ar in a sample of a known age can indicate a full or partial melt in the thermal history of the area. Reliability in the dating of a geological feature is increased by sampling disparate areas which have been subjected to slightly different thermal histories.

Ar—Ar dating is a similar technique which compares isotopic ratios from the same portion of the sample to avoid this problem. Applications[ edit ] Due to the long half-life , the technique is most applicable for dating minerals and rocks more than , years old. For shorter timescales, it is unlikely that enough 40 Ar will have had time to accumulate in order to be accurately measurable. K—Ar dating was instrumental in the development of the geomagnetic polarity time scale.

One archeological application has been in bracketing the age of archeological deposits at Olduvai Gorge by dating lava flows above and below the deposits. In the K—Ar method was used by the Mars Curiosity rover to date a rock on the Martian surface, the first time a rock has been dated from its mineral ingredients while situated on another planet.


Lunar and Planetary Science XX, pp. Characteristics of impact melting and excavation abstract. Kosmicheskoe Okruzhenie i Zemlya, pp. Lunar and Planetary Science, v. International Geology Review, v. Geological Society of America, Special Paper , pp.

Potassium-Argon Dating. Potassium-Argon dating has the advantage that the argon is an inert gas that does not react chemically and would not be expected to be included in the solidification of a rock, so any found inside a rock is very likely the result of radioactive decay of potassium. Since the argon will escape if the rock is melted, the dates obtained are to the last molten time for the rock.

I’ve listened as many people have protested the Biblical doctrine of the young earth. The earth must be old. Wood can be petrified by two basic processes, both of which usually involve burial in volcanic ash. This ash decomposes in the presence of water, enriching the groundwater with silica. In the first type of petrification, the wood decays in a hot, silica-rich environment. As each molecule of wood decomposes and is carried away, it is replaced by a molecule of silica.

Eventually the replacement is complete, with the mineral impurities in the silica being responsible for an array of beautiful colors in the final product. This type of petrified wood can be polished, and often becomes an object of incredible beauty. Once silicification is complete, there is no organic material remaining, but since on occasion the light and dark portions of the tree’s growth rings may decay at different rates, hints of the tree rings may be preserved if the minerals present change over time.

Many of the petrified trees found in the Petrified “Forest” of Arizona are of this type. The other type of petrification involves the total infiltration of the porous wood by silica-rich water.

Age of the Earth: strengths and weaknesses of dating methods

Click on the Icon or the text link. March 5, The Time of Trouble and the Mark of the Beast Satan will try to rule the world and force all people to obey and worship him and also to take the Mark of the Beast; But God’s people will be loyal to God rather than Satan. The Mark of the Beast is a sign of Satan’s ownership over the world. Yes, Satan is soon to rule the world and he will try to force all people to obey and worship him and to take the Mark of the Beast either on their forehead or their right hand.

Limitations on K-Ar Dating The Potassium-Argon dating method is an invaluable tool for those archaeologists and paleoanthropologists studying the earliest evidence for human evolution. As with any dating technique, there are some significant limitations.

After mating, the female then builds a nest elsewhere to raise the young alone. Franco Atirador Stephen J. Gould argued that these enormous antlers, which required great mineral resources from plants to support and prevented the elk from navigating through forests, were largely responsible for their extinction. The positioning of the antlers were poor for combat between males, but were great for intimidating rivals and impressing females.

Bird-of-Paradise Bird of Paradise These birds have evolved a wide variety of plumage displays for the sole purpose of attracting a mate. Duck genitalia and mechanical barriers Credit:

Unreliability of Radiometric Dating and Old Age of the Earth

Radioactive decay[ edit ] Example of a radioactive decay chain from lead Pb to lead Pb. The final decay product, lead Pb , is stable and can no longer undergo spontaneous radioactive decay. All ordinary matter is made up of combinations of chemical elements , each with its own atomic number , indicating the number of protons in the atomic nucleus. Additionally, elements may exist in different isotopes , with each isotope of an element differing in the number of neutrons in the nucleus.

A particular isotope of a particular element is called a nuclide. Some nuclides are inherently unstable.

Potassium-argon dating, method of determining the time of origin of rocks by measuring the ratio of radioactive argon to radioactive potassium in the rock. This dating method is based upon the decay of radioactive potassium to radioactive argon in minerals and rocks; potassium .

The eruption may have caused this 1, year period of cooler temperatures stadial , two centuries of which could be accounted for by the persistence of the Toba stratospheric loading. The climate recovered over a few decades, and Robock found no evidence that the 1, year cold period seen in Greenland ice core records had resulted from the Toba eruption. They concluded that the largest known volcanic eruption in the history of the human species did not significantly alter the climate of East Africa, [24] [25] attracting criticism from Richard Roberts.

For example, a year volcanic winter triggered by the eruption could have largely destroyed the food sources of humans and caused a severe reduction in population sizes. Therefore, the genetic differences among modern humans may reflect changes within the last 70, years, rather than gradual differentiation over hundreds of thousands of years.

For example, ancient stone tools in southern India were found above and below a thick layer of ash from the Toba eruption and were very similar across these layers, suggesting that the dust clouds from the eruption did not wipe out this local population. The populations of the Eastern African chimpanzee , [46] Bornean orangutan , [47] central Indian macaque , [48] the cheetah , the tiger , [49] and the separation of the nuclear gene pools of eastern and western lowland gorillas , [50] all recovered from very low numbers around 70, —55, years ago.

Migration after Toba[ edit ] The exact geographic distribution of human populations at the time of the eruption is not known, and surviving populations may have lived in Africa and subsequently migrated to other parts of the world.

Potassium-argon Dating