You tried? dating the age of earth what that
Posted in Dating
When asked for your age, it's likely you won't slip with the exception of a recent birthday mistake. But for the sprawling sphere we call home, age is a much trickier matter. Before so-called radiometric dating, Earth's age was anybody's guess. Our planet was pegged at a youthful few thousand years old by Bible readers by counting all the "begats" since Adam as late as the end of the 19th century, with physicist Lord Kelvin providing another nascent estimate of million years. Kelvin defended this calculation throughout his life, even disputing Darwin's explanations of evolution as impossible in that time period.
The entire practice of radiometric dating stands or falls on the veracity of four untestable assumptions. The assumptions are untestable because we cannot go back millions of years to verify the findings done today in a laboratory, and we cannot go back in time to test the original conditions in which the rocks were formed. If these assumptions that underlie radiometric dating are not true, then the entire theory falls flat, like a chair without its four legs.
Nov 29, The best estimate for Earth's age is based on radiometric dating of fragments from the Canyon Diablo iron meteorite. From the fragments, scientists calculated the relative abundances of . The ages measured for Earth's oldest rocks and oldest crystals show that the Earth is at least billion years in age but do not reveal the exact age of Earth's formation. The best age for the Earth ( Ga) is based on old, presumed single-stage leads coupled with the Pb ratios in troilite from iron meteorites, specifically the Canyon.
The second fatal flaw clearly reveals that at least one of those assumptions must actually be wrong because radiometric dating fails to correctly date rocks of known ages. For example, in the case of Mount St. Helens, we watched rocks being formed in the s, but when sent to a laboratory 10 years later for dating, the year-old rocks returned ages of hundreds of thousands to millions of years. Fossil remains are found in sedimentary rock layers. Layers of sediment form when various size particles e.
Most texts teach that it takes a long time for these sediments to build up, with older layers buried beneath younger layers. Fossils found in lower layers are deemed to be older than those in the upper layers, older on the bottom younger on the top. This is called relative age dating, the first step.
Next, evolutionary scientists then use index fossils to help establish the relative ages of rock layers that are not directly related to one another and their fossils. They help establish and correlate the relative ages of rock layers. Index fossils typically have a short stratigraphic or vertical range. In reality, many index fossils occur above or below their expected ranges.
In some cases, they turn up still alive today, but these can go unreported. Evolutionists assume that the creature evolved somehow, lived for a certain time period, and then died out.
Nevertheless, most textbook writers and the scientists they rely on grew up with a belief in uniformitarian geologic processes. The principle of uniformity is a philosophy and an assumption that the slow geologic processes going on today must explain the deposits of the past. As any judge in court will attest, eyewitness records record the past more accurately.
Also, keen observations in the field testify that the sediments comprising the ancient rock layers were laid down catastrophicallynot slowly over millions of years. Today, the geologic time scale shows ages based on radiometric age dating.
Many textbook authors consider radiometric ages as absolute ages. However, as you will soon learn, these techniques stray far from absolute dates, though they may reveal relative ages of some rocks.
They assign 4. But they cannot directly date the earth using selected isotopes because they believe all rocks have cycled over imagined eons, leaving no original rocks to test. They assume meteorites formed when earth did. Researchers age-dated a meteorite to sometime around the age they would accept. Thus, the earth itself has no direct evidence for its vast evolutionary age assignment.
The various rock layers are given names with assigned ages Figure 1. To understand exactly why, we must first learn the basics of radioactive elements and of the techniques used when treating these systems of elements as clocks. Many elements on the periodic table have radioactive forms. Stable atoms have a set number of protons, neutrons, and orbital electrons. Isotopes are atoms of the same elements with the same number of protons but different numbers of neutrons. Some isotopes are radioactive and others are stable.
A radioactive nucleus is not stable. Figure 1. The assumption of slow geologic processes and radiometric age dating has drastically inflated the age of the Earth and its strata. A basic way to express the rate of radioactive decay is called the half-life. Unstable radioactive isotopes called parent elements become stable elements called daughter elements.
Each radioactive element has its own specific half-life see Table 1.
Note: Carbon is not used to date minerals or rocks, but is used for organic remains that contain carbon, such as wood, bone, or shells. To estimate a radioisotope age of a crystalline rock, geologists measure the ratio between radioactive parent and stable daughter products in the rock. They can even isolate isotopes from specific, crystallized minerals within a rock.
They then use a model to convert the measured ratio into an age estimate. The models incorporate key assumptions, like the ratio of parent to daughter isotopes in the originally formed rock. How can anyone know this information? We must assume some starting condition. Evolutionists assume that as soon as a crystalline rock cooled from melt, it inherited no daughter product from the melt.
This way, they can have their clock start at zero. However, when they find isotope ratios that contradict other measurements or evolution, they often invoke inherited daughter product. This saves the desired age assignments.
Igneous crystalline rocks-those that have formed from molten magma or lava-are the primary rock types analyzed to determine radiometric ages. After one half-life of 1. This is a or parentdaughter ratio, which reduces to a ratio. If the sample contained this ratio, then the rock would be declared 1. If the ratio is greater thanthen not even one half-life has expired, so the rock would be younger. However, if the ratio is less thanthen the rock is considered older than the half-life for that system.
Six Thousand Years with Ken Ham
Decay of Radioactive potassium to argon After three half-lives of this system, totaling 3. Assumption 1: Laboratory measurements that have no human error or misjudgments. Measuring the radioactive parent and stable daughter elements to obtain the ratio between them must be accurate, and it usually is. Keep in mind that most laboratory technicians believe in deep time.
This sets the time periods they expect.
They all memorized the geologic time scale long before they approached their research, and thus may not even consider that processes other than radioisotope decay may have produced the accurately measured isotope ratios. Next, this technician assumes that all the radioactive parent isotopes began decaying right when the mineral crystallized from a melt. He also assumes none of the stable daughter element was present at this time. What if some stable daughter element was already present when the rock formed?
After all, these experts often explain away unexpected radioisotope age results using the excuse that daughter or parent isotopes must have been present when the rock formed.
How Old Is Earth?
Without knowledge of the starting condition, the use of isotopes as clocks means nothing. Have you ever seen an atom? Of course not.
Age of the Earth - Radiometric Dating Radiometric dating is the primary dating scheme employed by scientists to determine the age of the earth. In a nutshell, this is how it works: atoms are generally regarded as the smallest unit of matter; everything is made of . By dating the rocks in Earth's ever-changing crust, as well as the rocks in Earth's neighbors, such as the moon and visiting meteorites, scientists have calculated that Earth is billion years. The Age of the Earth. Today's evolutionists base their age of the Earth on their interpretation of radioactive elements. They assign billion years to earth based on the belief that earth itself evolved, so to speak, from a molten mass.
It is too small, but we must think about this on an atomic level. Decay byproducts like argon and helium are both gases.
Neither gas tends to attach to any other atom, meaning they rarely do chemistry.
Instead of reacting with atoms in rock crystals, they build up in rock systems and can move in and out of the rocks. One leading expert in isotope geology states that most minerals do not even form in closed systems.
A closed system would retain all the argon that radioactive potassium produces. He emphasizes that for a radioactive-determined date to be true, the mineral must be in a closed system.
The constant-decay rate assumption assumes the decay rate remained the same throughout the history of the rock. Scientists generally agree that the answer to the riddle of the age of the earth is carefully concealed within the earth's crust.
Thus, the geologic timescale and radiometric dating have been developed in an effort to determine the age of the earth. The older of the two dating methods, the geologic timescale, is actually a circular argument and is therefore considered by many scholars to be weak.
Nevertheless, the geologic timescale was thought to have been redeemed and refined with the advent of radiometric dating.
Dating the age of earth
Radiometric dating is more objective, and thus, more substantial. However, there are some underlying assumptions to consider. Age of the Earth - The Geologic Column The geologic column is the older of the two dating methods employed by scientists to determine the age of the earth. Basically, this is how it works: earth's many rock layers contain billions of fossils. Certain fossils are unique to certain layers of rock. Some of these fossils have been chosen to be what are called "index fossils".
Scientists assume the age of an index fossil by the stage of evolutionary history the fossil is assumed to be in. That age is then transferred to the rock layer in which the index fossil was found.
Then, to determine the age of all the other fossils in the same rock layer, we look at the age of the rock layer in which they are contained. Thus, we determine the age of the rock by the fossils it contains, and we determine the age of the fossils by the rock in which they are found. Many consider this circular reasoning.
To learn more about this circular argument, explore our geologic time scale site. Age of the Earth - Radiometric Dating Radiometric dating is the primary dating scheme employed by scientists to determine the age of the earth. In a nutshell, this is how it works: atoms are generally regarded as the smallest unit of matter; everything is made of atoms.
I congratulate, you were visited with a remarkable idea05.02.2020|Reply