Presentation on theme: "Creation-Evolution-Science and the Bible"— Presentation transcript:
1 Creation-Evolution-Science and the Bible Christian Worldview DevelopmentSeries onCreation-Evolution-Science and the BibleDating methodsPrepared by Ed van Ouwerkerkcampus staff at Iowa State University campus
2 The Bible says that the creation of the earth was completed in six days: “Thus the heavens and the earth were completed in all their vast array“ (Genesis 2:1)When we sum 76 generations (according to Luke) from Adam to Jesusand add 2012 years since the birth of Jesus, the earth is approx. 6,000 years old (not billions), if we believe that - Genesis 1 is history and no poetry and that - between Genesis 1, verses 2 and 3 is no time span.
3 We will discuss two articles, written by Mike Riddle: Does radiometric dating prove the earth is old? 11 The New Answers Book by Ken Ham, Volume 1, Chapter 9.Doesn’t carbon-14 dating disprove the Bible? 22 The New Answers Book by Ken Ham, Volume 1, Chapter 7.
4 Uranium-238 Thorium-234 Protactinium-234 Uranium-234 Thorium-230 Radium-226Radon-222Polonium-218Lead-214 Bismuth-214Polonium-214Lead-210Bismuth-210Polonium-210Lead-206 (stable)Uranium radioactively decays through a series of steps until it becomes the stable element lead.Uranium to lead decay sequence. The number represents the number of protons and neutrons in the nucleus of the atom.There are certain kinds of atoms (radioisotopes) in nature that are unstable and spontaneously change (decay) in other kinds of atoms.Potassium decays to argon. Uranium and Potassium are called the parent element and Lead and Argon are called the daughter element.
5 Radioisotope dating is used to date igneous rocks Radioisotope dating is used to date igneous rocks. That are rocks which form when hot, molten material cools and solidifies; rocks like granite and basalt.granitebasalt
6 Sedimentary rocks (like sandstone, shale, and limestone), that hold most of the world’s fossils, cannot be dated with radioisotopedating techniques, because they are comprised of particles frompreexisting rocks , which were transported by water andredeposited somewhere else.sandstoneshalelimestone
7 The radioisotope dating clock starts when a rock cools. Assumptions During the molten state it is assumed that the intense heat will force any gaseous daughter elements like argon escape. Once the rock cools it is assumed that no more atoms can escape and any daughter element found in a rock will be the result of radioactive decay.The dating process then requires measuring how much daughter element is in a rock sample and knowing the decay rate (expressed in half-life), to be assumed to have been constant for millions of years.
8 The following half-life times have been measured in labs during the last few decades (present observable decay rates):ParentDaughterHalf-lifePolonium-218Lead-2143 minutesThorium-234Protactinium-23424 daysCarbon-14Nitrogen-145,730 yearsPotassium-40Argon-401.25 billion yearsUranium-238Lead-2064.47 billion yearsRubidium-87Strontium-8748.8 billion yearsInitial conditions at time of formation can never be observed.
9 Therefore three critical assumptions must be made that affect the results of radioisotope dating: 1. Initial conditions, unknown environmental conditions2. The amount of parent and daughter elements in a sample that has not been altered by processes other than radioactive decay.3. The decay rate (in half-life) of the parent isotope has been constant since the rock was formedLet’s watch a 1 minute video about a radiometric dating technique.Let’s now watch a 9-minute video by Mike Riddle about radiometric dating and its assumptions.
10 RATE Group, by Creation Research Institute In 1997 an eight-year research project was started to investigate the age of the earth. The group was called the RATE Group = Radioisotopes and the Age of The Earth.The team of scientists included: Larry Vardiman, PhD Atmospheric Science Russell Humphreys, PhD Physics Eugene Chaffin, PhD PhysicsDonald DeYoung, PhD Physics John Baumgartner, PhD Geophysics,Steven Austin, PhD Geology Andrew Snelling, PhD Geology Stephen Boyd, PhD Hebraic and Cognate StudiesThe objective of the research was to gather data commonly ignored or censored by evolutionary standards of dating. The scientists reviewed the assumptions and procedures used in estimating the ages of rocks and fossils.
11 There is another form of dating called isochron dating, which involves analyzing four or more samples from the same rock unit. This method attempts to eliminate one of the assumptions (starting conditions). However, it includes another assumption which can introduce errors.Tests carried out by the RATE group Rocks from volcanoes with known ages were sent to a lab for radioisotope dating.Here are the results:Rock locationRock formation inRocks dated to beMount St. Helens, USA19860.5 – 2.8 million years oldMount Ngauruhoe, NZ0.27 – 3.5 million years old
12 More recent research by the RATE group (2005) indicates that the very slow decay of Uranium-238 to Lead-206 of today, in the past must have been accelerated to helium escape from zircon crystals in granite. The RATE group suggests that this accelerated decay took place early during the Creation Week and again during the Flood.Based on the measured helium retention, a statistical analysis gives an estimated age for zircons of 6,000 ± 2,000 years, which is250,000 times shorter than the conventional age of 1,5 billion years,and which is closely according to the biblical creation account.
13 It must be concluded that because nuclear decay has been shown to have occurred at grossly accelerated rates when molten rocks were forming, crystallizing and cooling, the radiometric methods cannot possibly date these rocks accurately based on false assumption of constant decay through earth history at today’s slow rates.Thus the radiometric dating methods are highly unreliable and don’t prove the earth is old.“By wisdom the LORD laid the earth’s foundations, byunderstanding he set the heavens in place” Proverbs 3:19
14 Carbon-14 dating for fossils This method can be used for determining the age of once-living things (organic materials: plants, animals), up to 50,000 years.In nature we find Carbon-12, a stable atom holding 6 protons and 6 neutrons in its nucleus.There is also the radioactive unstable carbon isotope Carbon-14 (having 8 instead of 6 neutrons). Carbon-14 is constantly decaying, but is also constantly added to the atmosphere by cosmic radiation from outer space.These cosmic rays collide with atoms in the atmosphere and can cause them to come apart. Neutrons that come from these fragmented atoms collide with 14N atoms and convert them into 14C atoms.
15 Once 14C is produced, it combines with oxygen in the atmosphere to form CO2, which is incorporated into plants/food. So we all eat food that contains 12C and 14C , in the same ratio as the air we breath.When living organisms die, the intake of 14C stops and the decay of 14C starts. By measuring the ratio of 14C to 12C with an Accelerator Mass Spectrometer we can determine the age of the dead organism.In order to interpret the results correctly we need to know: 1. How fast is the 14C decay, and has it always been so? (The half-life of 14C is today 5,730 years)2. What was the starting amount of 14C in the creature when it died. (today there is one 14C atom in one trillion 12C atoms in the atmosphere)
16 Willard Libby, evolutionist and the founder of the carbon-14 dating method in 1949, assumed the ratio 14C to 12C to be constant over time.If that is true, production of 14C (by cosmic rays) and removal of 14C (by decay) must be the same and in equilibrium.However, Libby stated that the earth (that is billions of years old) started without 14C in its atmosphere and it would take 30,000 years to reach 14C production and removal equilibrium. He also stated that equilibrium still hasn’t been reached today. Doesn’t he say then that the earth must be younger than 30,000 years? He actually says that the 14C/12C ratio is not constant.The Specific Production Rate (SPR) of 14C is known to be 18.8 atomsper gram of total carbon per minute. The Specific Decay Rate (SDR) isknown to be only / disintegrations per gram per minute.The difference between these two numbers shows that the buildupin the biosphere hasn't had time to catch up with production in thestratosphere. In other words, the earth's atmosphere must be lessthan some fifty thousand years old! (ref)
17 One of the reasons that the production of 14C in our stratosphere isn’t constant is the decay of the magnetic field of the earth.Read about the effects of the fading magnetic field and the effects of the Genesis flood in this article by Larry Humphreys.Also it is assumed that the amount of vegetation to decay into thebiosphere has been about 500 times higher prior to the Genesis flood than after the flood. That subject will be discussed in other part of this series.
18 ConclusionAll radiometric dating methods are based on, mostly evolutionary, assumptions about events that happened in the past.In the reported ages given in textbooks and journals, these evolutionary assumptions have not been questioned, while results inconsistent with long ages have been censored.When assumptions are evaluated and shown to be faulty, the thereafter adjusted results mostly support the biblical account of a global flood and a young earth.