Why is carbon 14 useful in radioactive dating but not
Why is carbon 14 useful in radioactive dating
this happens quite fast, yet so much helium is still in some rocks that it has not had time to escape—certainly not billions of years. this excess appears to have come from the upper mantle, below the earth's crust. the do the radiometric dates of millions of years mean, if they are not true ages?), fossils formed in the early post-flood period would give radiocarbon ages older than they really are. coal is an obvious candidate because the youngest coal is supposed to be millions of years old, and most of it is supposed to be tens or hundreds of millions of years old.. / authors: ken ham, jonathan sarfati, and carl wieland, adapted from the revised & expanded answers book (master books, 2000). radioactive particles in solid rock cause spherical zones of damage to the surrounding crystal structure. the method involves dividing both the parent and daughter concentrations by the concentration of a similar stable isotope—in this case, strontium-86. inches) per year, and this rate would have been greater in the past.. maas, “nd-sr isotope constraints on the age and origin of unconformity-type uranium deposits in the alligator rivers uranium field, northern territory, australia, economic geology, 1989, 84:64-90. earth's magnetic field has been decaying so fast that it looks like it is less than 10,000 years old. john woodmorappe has produced an incisive critique of these dating methods. the other nine samples again gave much older dates but the authors decided they must be contaminated and discarded them. the total amount in the atmosphere is 1/2000th of that expected if the universe is really billions of years old. these displaced neutrons, now moving fast, hit ordinary nitrogen (14n) at lower altitudes, converting it into 14c. this is because they believe that this is an accurate eyewitness account of world history, which bears the evidence within it that it is the word of god, and therefore totally reliable and error-free. rate of decay of 14c is such that half of an amount will convert back to 14n in 5,730 years (plus or minus 40 years)., preconceived notions about human evolution could not cope with a skull like 1470 being “that old. this is consistent with a young world—the argon has had too little time to escape.. provine admitted:“most of what i learned of the field [evolutionary biology] in graduate (1964-68) school is either wrong or significantly changed. this would make things look much older than they really are when current rates of decay are applied to dating.. humphreys, “the sea's missing salt: a dilemma for evolutionists,” proc. geologist john woodmorappe, in his devastating critique of radioactive dating, points out that there are other large-scale trends in the rocks that have nothing to do with radioactive decay.
Why is carbon 14 so useful in carbon dating
a straight line is drawn through these points, representing the ratio of the parent:daughter, from which a date is calculated. cook recognized that the current understanding of nuclear physics did not seem to allow for such a conversion under normal conditions, but he presents evidence that such did happen, and even suggests how it could happen. who ask about carbon-14 (14c) dating usually want to know about the radiometric dating methods that are claimed to give millions and billions of years—carbon dating can only give thousands of years. the flood buried a huge amount of carbon, which became coal, oil, etc. unlike common carbon (12c), 14c is unstable and slowly decays, changing it back to nitrogen and releasing energy., “ecological and temporal placement of early pliocene hominids at aramis, ethiopia,” nature, 1994, 371:330-333. such a re-calibration makes sense of anomalous data from carbon dating—for example, very discordant “dates” for different parts of a frozen musk ox carcass from alaska and an inordinately slow rate of accumulation of ground sloth dung pellets in the older layers of a cave where the layers were carbon dated. sarfati, “the earth's magnetic field: evidence that the earth is young,” creation, 1998, 20(2):15-19., such huge time periods cannot be fitted into the bible without compromising what the bible says about the goodness of god and the origin of sin, death and suffering—the reason jesus came into the world (see six days? taylor, “carbon dioxide in the antediluvian atmosphere,” creation research society quarterly, 1994, 30(4):193-197. one example is k-ar “dating” of five historical andesite lava flows from mount nguaruhoe in new zealand. if the techniques were absolutely objective and reliable, such information would not be necessary. will deal with carbon dating first and then with the other dating methods. ma was settled upon because of the agreement between several different published studies (although the studies involved selection of “good” from “bad” results, just like australopithecus ramidus, above). the long-age dating techniques were really objective means of finding the ages of rocks, they should work in situations where we know the age. again, the stories are evaluated according to their own success in agreeing with the existing long ages belief system. this effect (which is additional to the magnetic field issue just discussed) were corrected for, carbon dating of fossils formed in the flood would give ages much older than the true ages. isotope concentrations can be measured very accurately, but isotope concentrations are not dates. dating in many cases seriously embarrasses evolutionists by giving ages that are much younger than those expected from their model of early history. after this was widely accepted, further studies of the rocks brought the radiometric age down to about 1.” so, in two half-lives, or 11,460 years, only one-quarter of that in living organisms at present, then it has a theoretical age of 11,460 years. with sloth cave dung, standard carbon dates of the lower layers suggested less than 2 pellets per year were produced by the sloths. williams, “long-age isotope dating short on credibility,” cen technical journal, 1992, 6(1):2-5.
Why is carbon-14 useful in radioactive dating but not | Personal
Carbon-14, Radiometric Dating - CSI
Why is carbon 14 useful in radioactive dating but not
we suggesting that evolutionists are conspiring to massage the data to get what they want? correcting the dates increased the number to a more realistic 1.” creationists agree that the deeper rocks are generally older, but not by millions of years. then there was a rise in 14co2 with the advent of atmospheric testing of atomic bombs in the 1950s. brown, “correlation of c-14 age with real time,” creation research society quarterly, 1992, 29:45-47. nguaruhoe, new zealand, and the implications for potassium-argon 'dating,'” proc. the paradigm, or belief system, of molecules-to-man evolution over eons of time, is so strongly entrenched it is not questioned—it is a “fact. then cross-matching of ring patterns is used to calibrate the carbon “clock”—a somewhat circular process which does not give an independent calibration of the carbon dating system. therefore, the 14c/12c ratio in plants/animals/the atmosphere before the flood had to be lower than what it is now. the accompanying checks showed that the 14c date was not due to contamination and that the “date” was valid, within the standard (long ages) understanding of this dating system. can take a sample of air, count how many 12c atoms there are for every 14c atom, and calculate the 14c/12c ratio., an expert in the environmental fate of radioactive elements, identified 17 flaws in the isotope dating reported in just three widely respected seminal papers that supposedly established the age of the earth at 4. humphreys, “reversals of the earth's magnetic field during the genesis flood,” proc. since the flood was accompanied by much volcanism (see noah's flood…, how did animals get from the ark to isolated places? that measure 14c would like a source of organic material with zero 14c to use as a blank to check that their lab procedures do not add 14c. gentry has researched radiohalos for many years, and published his results in leading scientific journals. the latter figures are significant because thorium-derived dates should be the more reliable, since thorium is less mobile than the uranium minerals that are the parents of the lead isotopes in lead-lead system. again, this indicates a maximum age, not the actual age. snelling has suggested that fractionation (sorting) of elements in the molten state in the earth's mantle could be a significant factor in explaining the ratios of isotope concentrations which are interpreted as ages. whatever caused such elevated rates of decay may also have been responsible for the lead isotope conversions claimed by cook (above). unconsciously, the researchers, who are supposedly “objective scientists” in the eyes of the public, select the observations to fit the basic belief system. thorium has a long half-life (decays very slowly) and is not easily moved out of the rock, so if the lead-208 came from thorium decay, some thorium should still be there. it is simply that all observations must fit the prevailing paradigm.
Carbon 14 and nuclear medicine
Why is carbon 14 used in carbon dating
again, the only way to know if an isochron is “good” is by comparing the result with what is already believed. to derive ages from such measurements, unprovable assumptions have to be made such as:The starting conditions are known (for example, that there was no daughter isotope present at the start, or that we know how much was there). international team of creationist scientists is actively pursuing a creationist understanding of radioisotope dating. the level of proof demanded for such stories seems to be much less than for studies in the empirical sciences, such as physics, chemistry, molecular biology, physiology, etc. this is far too young for evolutionists who claim the moon is 4. is entering the sea much faster than it is escaping. but these could not last more than a few thousand years—certainly not the 65 ma since the last dinosaurs lived, according to evolutionists. even granting generous assumptions to evolutionists, the sea could not be more than 62 ma years old—far younger than the billions of years believed by the evolutionists. this contrasts with an age of 1550-1650 ma based on other isotope ratios, and ages of 275, 61, 0,0,and 0 ma for thorium/lead (232th/208pb) ratios in five uraninite grains. it cannot be used to date volcanic rocks, for example. sarfati, “blowing old-earth belief away: helium gives evidence that the earth is young,” creation, 1998, 20(3):19-21. in reality, all dating methods, including those that point to a young earth, rely on unprovable assumptions. involved with unrecorded history gather information in the present and construct stories about the past., a stable carbon isotope, 13c , is measured as an indication of the level of discrimination against 14c. he found that even highly weathered soil samples from the area, which are definitely not closed systems, gave apparently valid “isochron” lines with “ages” of up to 1,445 ma. woodmorappe, the mythology of modern dating methods, for one such thorough evaluation. the amount of lead may be consistent with current rates of decay over millions of years, but it would have diffused out of the crystals in that time. zheng, “influence of the nature of initial rb-sr system on isochron validity,” chemical geology, 1989, 80:1-16 (p. this gives a maximum age of the moon, not the actual age. accordingly, carbon dating carefully applied to items from historical times can be useful. are many lines of evidence that the radiometric dates are not the objective evidence for an old earth that many claim, and that the world is really only thousands of years old. the “zero” ages in this case are consistent with the bible. the sea is not nearly salty enough for this to have been happening for billions of years.
Carbon 14 useful radioactive dating not nuclear medicine
techniques that give results that can be dismissed just because they don't agree with what we already believe cannot be considered objective. in fact, if a sample contains 14c, it is good evidence that it is not millions of years old. that is, they take up less than would be expected and so they test older than they really are. the methods that have been used to estimate the age of the earth, 90 percent point to an age far less than the billions of years asserted by evolutionists. to answer this question, it is necessary to scrutinize further the experimental results from the various dating techniques, the interpretations made on the basis of the results and the assumptions underlying those interpretations. whatever process was responsible for the halos could be a key also to understanding radiometric dating. now the polonium has to get into the rock before the rock solidifies, but it cannot derive a from a uranium speck in the solid rock, otherwise there would be a uranium halo. if a chemist were measuring the sugar content of blood, all valid methods for the determination would give the same answer (within the limits of experimental error). example, researchers applied posterior reasoning to the dating of australopithecus ramidus fossils., lowering the total 12c in the biosphere (including the atmosphere—plants regrowing after the flood absorb co2, which is not replaced by the decay of the buried vegetation). cannot prove the age of the earth using a particular scientific method, any more than evolutionists can.. russell humphreys gives other processes inconsistent with billions of years in the pamphlet evidence for a young world. either the polonium was created (primordial, not derived from uranium), or there have been radical changes in decay rates in the past. andrew snelling worked on “dating the koongarra uranium deposits in the northern territory of australia, primarily using the uranium-thorium-lead (u-th-pb) method. isochron dating technique was thought to be infallible because it supposedly covered the assumptions about starting conditions and closed systems. similar questions can also arise in applying sm-nd [samarium-neodymium] and u-pb [uranium-lead] isochron methods. however, as soon as a plant or animal dies, the 14c atoms which decay are no longer replaced, so the amount of 14c in that once-living thing decreases as time goes on., the genesis flood would have greatly upset the carbon balance. wood found in “upper permian” rock that is supposedly 250 ma old still contained 14c. this will make old things look older than they really are. when the isotope concentrations are adjusted for such conversions, the ages calculated are reduced from some 600 ma to recent. were closed or isolated so that no parent or daughter isotopes were lost or added., using hindsight, it is argued that “excess” argon from the magma (molten rock) was retained in the rock when it solidified.
Why is carbon 14 used in radiocarbon dating. hunziker, editors, lectures in isotope geology, “u-th-pb dating of minerals,” by d. scientists do not measure the age of rocks, they measure isotope concentrations, and these can be measured extremely accurately.. woodmorappe, the mythology of modern dating methods (san diego, ca: institute for creation research, 1999). however, even with such historical calibration, archaeologists do not regard 14c dates as absolute because of frequent anomalies. it does not give dates of millions of years and when corrected properly fits well with the biblical flood. recently, a sample of wood found in rock classified as “middle triassic,” supposedly some 230 million years old, gave a 14c date of 33,720 years, plus or minus 430 years. familiar to us as the black substance in charred wood, as diamonds, and the graphite in “lead” pencils, carbon comes in several forms, or isotopes. the dating methods are an objective and reliable means of determining ages, they should agree. this problem cannot be overlooked, especially in evaluating the numerical time scale., there are factors other than age responsible for the straight lines obtained from graphing isotope ratios. is an unsolved mystery to evolutionists as to why coal has 14c in it,, or wood supposedly millions of years old still has 14c present, but it makes perfect sense in a creationist world view. from atomic testing, like cosmic rays, causes the conversion of 14n to 14c. these techniques, unlike carbon dating, mostly use the relative concentrations of parent and daughter products in radioactive decay chains. ring dating (dendrochronology) has been used in an attempt to extend the calibration of the calibration of carbon-14 dating earlier than historical records allow, but this depends on temporal placement of fragments of wood (from long dead trees) using carbon-14 dating, assuming straight-line extrapolation backwards.., seeds in the graves of historically dated tombs) enables the level of 14c in the atmosphere at that time to be estimated, and so partial calibration of the “clock” is possible. the common application of such posterior reasoning shows that radiometric dating has serious problems. again, all sorts of reasons can be suggested for the “bad” dates, but this is again posterior reasoning. when the 14c has been formed, like ordinary carbon (12c), it combines with oxygen to give carbon dioxide (14co2), and so it also gets cycled through the cells of plants and animals. anything over about 50,000 years old, should theoretically have no detectable 14c left. the secular scientific literature lists many examples of excess argon causing dates of millions of years in rocks of known historical age. isochron technique involves collecting a number of rock samples from different parts of the rock unit being dated.. fisher, “excess rare gases in a subaerial basalt in nigeria,” nature, 1970, 232:60-61. this is true of both creationist and evolutionist scientific arguments—evolutionists have had to abandon many “proofs” for evolution just as creationists have also had to modify their arguments.
Why is c14 used in carbon dating this is just what we would expect for “young” galaxies that have not existed long enough for wide expansion. of the intermediate decay products—such as the polonium isotopes—have very short half-lives (they decay quickly).. gunst, “an analysis of the earth's magnetic field from 1835 to 1965,” essa technical report ier 46-ies, 1965, u. must remember that the past is not open to the normal processes of experimental science, that is, repeatable experiments in the present. the rubidium-strontium isochron technique suggested that the recent lava flow was 270 ma older than the basalts beneath the grand canyon—an impossibility. supernova is an explosion of a massive star—the explosion is so bright that it briefly outshines the rest of the galaxy. krummenacher, “isotopic composition of argon in modern surface rocks,” earth and planetary science letters, 1969, 6:47-55. however, such exercises in story-telling can hardly be considered as objective science that proves an old earth.-14 is made when cosmic rays knock neutrons out of atomic nuclei in the upper atmosphere. known as the rate (radioisotopes and the age of the earth) group, it combines the skills of various physicists and geologists to enable a multi-disciplinary approach to the subject.” a study of pig fossils in africa readily convinced most anthropologists that the 1470 skull was much younger. the range of recorded history, calibration of the 14c "clock is not possible. no source of coal has been found that completely lacks 14c. a speck of radioactive element such as uranium-238, for example, will leave a sphere of discoloration of characteristically different radius for each element it produces in its decay chain to lead-206. carbon (12c)is found in the carbon dioxide (co2) in the air, which is taken up by plants, which in turn are eaten by animals. ultimately date the earth historically using the chronology of the bible. cook noted that, in ores from the katanga mine, for example, there was an abundance of lead-208, a stable isotope, but no thorium-232 as a source for lead-208. ratios or uraninite crystals from the koongarra uranium body in the northern territory of australia gave lead-lead isochron ages of 841 ma, plus or minus 140 ma. robert gentry has pointed out that the amount of helium and lead in zircons from deep bores is not consistent with an evolutionary age of 1,500 ma for the granite rocks in which they are found. snelling, “the failure of u-th-pb 'dating' at koongarra, australia,” cen technical journal, 1995, 9(1):71-92. long ago as 1966, nobel prize nominee melvin cook, professor of metallurgy at the university of utah, pointed out evidence that lead isotope ratios, for example, may involve alteration by important factors other than radioactive decay. this would make things which died at that time appear older in terms of carbon dating. that is why radiocarbon dating cannot give millions of years.
Carbon-14 - Wikipedia summary, the carbon-14 method, when corrected for the effects of the flood, can give useful results, but needs to be applied carefully. on the inaccuracies found using the Carbon-14 dating method, and the various other radioactive dating methods. the wood was “dated” by radiocarbon (14c) analysis at about 45,000 years old, but the basalt was “dated” by potassium-argon method at 45 million years old! lead and helium results suggest that rates of radioactive decay may have been much higher in the recent past. we don't have all the answers, but we do have the sure testimony of the word of god to the true history of the world. moon is slowly receding for the earth at about 4 centimeters (1. it is very much driven by the existing long-age world view that pervades academia today. billion years to reach its present distance from the earth. similar story surrounds the dating of the primate skull known as knm-er 1470. total 14c is also proportionately lowered at this time, but whereas no terrestrial process generates any more 12c, 14c is continually being produced, and at a rate which does not depend on carbon levels (it comes from nitrogen). forms issued by radioisotope laboratories for submission with samples to be dated commonly ask how old the sample is expected to be. decay releases helium into the atmosphere, but not much is escaping. they rely more on dating methods that link into historical records. understand the limitations of dating methods better than evolutionists who claim that they can use processes observed in the present to “prove” that the earth is billions of years old.); lack of soil layers; polystrate fossils (which traverse several rock layers vertically—these could not have stood vertically for eons of time while they slowly got buried); thick layers of “rock” bent without fracturing, indicating that the rock was all soft when bent; and more. people wonder how millions of years could be squeezed into the biblical account of history.” however, the results from zircons (a type of gemstone), for example, generally lie off the concordia curve—they are discordant. a specimen older than 50,000 years should have too little 14c to measure. are various other radiometric dating methods used today to give ages of millions or billions of years for rocks. this would make things carbon-dated from that time appear younger than their true age. this effectively combines the two uranium-lead decay series into one diagram. amount of cosmic rays penetrating the earth's atmosphere affects the amount of 14c produced and therefore dating the system. techniques, such as the use of isochrons, make different assumptions about starting conditions, but there is a growing recognition that such “foolproof” techniques can also give “bad” dates.
Nuclear Chemistry: Half-Lives and Radioactive Dating - dummies humphreys has suggested that this may have occurred during creation week and the flood. however, with radiometric dating, the different techniques often give quite different results. lowe, “problems associated with the use of coal as a source of 14c free background material,” radiocarbon, 1989, 31:117-120., the amount of helium in zircons from hot rock is also much more consistent with a young earth (helium derives from the decay of radioactive elements). however, the “age” is calculated using assumptions about the past that cannot be proven. they realize that all science is tentative because we do not have all the data, especially when dealing with the past. living things, although 14c atoms are constantly changing back to 14n, they are still exchanging carbon with their surroundings, so the mixture remains about the same as in the atmosphere. some of the evidences are: lack of erosion between rock layers supposedly separated in age by many millions of years; lack of disturbance of rock strata by biological activity (worms, roots, etc. this started with an initial 212 to 230 ma, which, according to the fossils, was considered way off the mark (humans “weren't around then"). are many examples where the dating methods give “dates” that are wrong for rocks of known age. there have been many attempts, because the orphan halos speak of conditions in the past, either at creation or after, perhaps even during the flood, which do not fit with the uniformitarian view of the past, which is the basis of the radiometric dating systems. it is also much younger than the radiometric “dates” assigned to moon rocks. if the line is of good fit and the “age” is acceptable, it is a “good” date. a scientist cannot do experiments on events that happened in the past., the ratio of 14c/12c in the atmosphere has not been constant—for example, it was higher before the industrial era when the massive burning of fossil fuels released a lot of carbon dioxide that was depleted in 14c. is plenty of evidence that the radioisotope dating systems are not the infallible techniques many think, and that they are not measuring millions of years. zheng wrote:Some of the basic assumptions of the conventional rb-sr [rubidium-strontium] isochron method have to be modified and an observed isochron does not certainly define valid age information for a geological system, even if a goodness of fit of the experimental results is obtained in plotting 87sr/86sr. so a bone, or a leaf or a tree, or even a piece of wooden furniture, contains carbon. “false isochrons” are so common that a whole terminology has grown up to describe them, such as apparent isochron, mantle isochron, pseudoisochron, secondary isochron, inherited isochron, erupted isochron, mixing line and mixing isochron. one rare form has atoms that are 14 times as heavy as hydrogen atoms: carbon-14, or 14c, or radiocarbon. overall, the energy of the earth's magnetic field has been decreasing, so more 14c is being produced now than in the past. the concentration of a parent radioactive isotope, such as rubidium-87, is graphed against the concentration of a daughter isotope, such as strontium-87, for all the samples. because 14c is so well mixed up with 12c, we expect to find that this ratio is the same if we sample a leaf from a tree, or a part of your body.