Radiometric dating rock layers

There are three different kinds of rocks that are found in the layers of rocks. There is no specific order of the layers because the layers are always changing but one thing is for sure that the rocks in the bottom layer are the oldest rocks and the rocks at the top are the youngest layers. The reason that the rocks on the bottom of the layers of rocks are the oldest is because rocks will continue to pile on top of each other. If there is one layer of rock on the bottom and another layer piles on top of it, the layer on the bottom is now the oldest and the layer on top is the youngest.
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Radiometric Dating and the Geological Time Scale

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Age Of The Earth

Radiometric dating calculates an age in years for geologic materials by measuring the presence of a short-life radioactive element, e. The term applies to all methods of age determination based on nuclear decay of naturally occurring radioactive isotopes. Bates and Jackson To determine the ages in years of Earth materials and the timing of geologic events such as exhumation and subduction, geologists utilize the process of radiometric decay. Geologists use these dates to further define the boundaries of the geologic periods shown on the geologic time scale. Radiometric decay occurs when the nucleus of a radioactive atom spontaneously transforms into an atomic nucleus of a different, more stable isotope. This transformation happens via the emission of particles such as electrons known as beta decay and alpha particles. For instance, rubidium 87Rb , an unstable element, becomes strontium 87Sr , a stable element, via beta decay.
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Radiometric Age Dating

ANSWER: Sedimentary rocks cannot be dated directly using radiometric dating, which is based on the idea that when rocks are in liquid form, their radiometric clock resets. This technique is generally used to date igneous and metamorphic rock, which are rocks that were once melted due to extreme heat and pressure. Radiometric dating determines how long ago the liquid rock solidified into solid rock. Sedimentary rock on the other hand consists of sedimentary particles which were removed and deposited somewhere else by some sort of fluid generally wind and water. The sedimentary particles predate the rock which they form.
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Radiometric dating of rocks and minerals using naturally occurring, long-lived radioactive isotopes is troublesome for young-earth creationists because the techniques have provided overwhelming evidence of the antiquity of the earth and life. Some so-called creation scientists have attempted to show that radiometric dating does not work on theoretical grounds for example, Arndts and Overn ; Gill but such attempts invariably have fatal flaws see Dalrymple ; York and Dalrymple Other creationists have focused on instances in which radiometric dating seems to yield incorrect results.
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