Dr. Andrew A. Snelling

• Technical Research Paper

  Problems with the U-Pb Radioisotope Dating Methods—2. U and Pb Mobility

  

  June 13, 2018 from Answers Research Journal

  Since the amount of U and Pb mobility in most cases has been small, then the determinations can be used to provide useful relative ages.

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• Technical Research Paper

  Problems with the U-Pb Radioisotope Dating Methods—1. Common Pb

  

  July 26, 2017 from Answers Research Journal

  Problems remain in the interpretation of the measured Pb isotopic ratios to transform them into ages.

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• Technical Research Paper

  Determination of the Decay Constants and Half-Lives of Uranium-238 (²³⁸U) and Uranium-235 (²³⁵U), and the Implications for U-Pb and Pb-Pb Radioisotope Dating Methodologies

  

  Jan. 18, 2017 from Answers Research Journal

  Without accurately known decay half-lives, all radioisotope ages cannot be accurately determined or be considered absolute ages.

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• Technical Research Paper

  Do Varves, Tree-Rings, and Radiocarbon Measurements Prove an Old Earth?

  

  Dec. 7, 2016 from Answers Research Journal

  The BioLogos Foundation published a popular-level article by old-earth geologists Gregg Davidson and Ken Wolgemuth presenting arguments for an old earth.

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• Technical Research Paper

  Determination of the Radioisotope Decay Constants and Half-lives: Potassium-40 (⁴⁰K)

  Aug. 3, 2016 from Answers Research Journal

  Dr. Snelling documents the methodology and history of determining present decay constants and half-lives of parent radioisotopes used for dating methods.

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• Technical In-Depth Article

  Helium Diffusion Rates Support Accelerated Nuclear Decay

  May 4, 2016 from Answers in Depth

  A significant fraction of the earth’s radioactive elements, particularly uranium and thorium, appear to be in the granitic rock of the upper continental crust.

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• Technical Research Paper

  Radioisotope Dating of Meteorites: V. Isochron Ages of Groups of Meteorites

  Dec. 16, 2015 from Answers Research Journal

  This contribution is designed to document the radioisotope dating data for groups of chondrites, stony achondrites, pallasites and mesosiderites, and irons.

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• Technical Research Paper

  Terrestrial Vertebrates Dissolved Near Flood Fountains

  Nov. 18, 2015 from Answers Research Journal

  Terrestrial vertebrates close to the Flood fountains dissolved then precipitated out to form Precambrian-Cambrian sedimentary phosphate deposits.

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• Technical Research Paper

  Determination of the Radioisotope Decay Constants and Half-Lives: Samarium-147 (¹⁴⁷Sm)

  June 10, 2015 from Answers Research Journal

  Over the last 80 years numerous determinations have been made of the ¹⁴⁷Sm half-life.

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• Technical Research Paper

  Radioisotope Dating of Meteorites: IV. The Primitive and Other Achondrites

  May 6, 2015 from Answers Research Journal

  This paper documents radioisotope dating for meteorites, achondrites, angrites, aubrites, mesosiderites, and irons to further discuss significance of the data.

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• Technical In-Depth Article

  Is the Ledi Jaw the Missing Link in Human Evolution?

  March 21, 2015 from Answers in Depth

  Evolutionists say the oldest human fossil, the Ledi jaw (LD 350-1), shows humans had evolved from ancestors like Lucy in East Africa 2.8 million years ago.

• Technical Research Paper

  Determination of the Radioisotope Decay Constants and Half-Lives: Rhenium-187 (¹⁸⁷Re)

  Feb. 25, 2015 from Answers Research Journal

  If the Re-Os dating method is calibrated against an uncertain “gold standard,” then it cannot be absolute and cannot be used to reject a young-earth timescale.

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• Technical In-Depth Article

  More Evidence of Rapid Geomagnetic Reversals Confirms a Young Earth

  Jan. 8, 2015 from Answers in Depth

  Explore stunning evidence consistent with the young-earth model for the earth’s geomagnetic polarity reversal during the Flood and its aftermath.

• Technical Research Paper

  Radioisotope Dating of Meteorites: III. The Eucrites (Basaltic Achondrites)

  Dec. 31, 2014 from Answers Research Journal

  This third paper documents the radioisotope dating data for more meteorites, so as to continue the discussion of the significance of these data.

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• Technical Research Paper

  Determination of the Radioisotope Decay Constants and Half-Lives: Lutetium-176 (¹⁷⁶Lu)

  Dec. 3, 2014 from Answers Research Journal

  If the Lu-Hf dating method has been calibrated against the U-Pb “gold standard” with its own uncertainties, then it cannot be absolute.

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• Technical Research Paper

  Determination of the Radioisotope Decay Constants and Half-Lives: Rubidium-87 (⁸⁷Rb)

  Sept. 3, 2014 from Answers Research Journal

  In spite of numerous attempts for over 60 years to determine the ⁸⁷Rb half-life and decay constant, there is still no consensus.

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• Technical Research Paper

  Radioisotope Dating of Meteorites II: The Ordinary and Enstatite Chondrites

  Aug. 20, 2014 from Answers Research Journal

  This paper documents the radioisotope dating data for more meteorites, so as to continue the discussion of the significance of these data.

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• Technical Research Paper

  Radioisotope Dating of Meteorites: I. The Allende CV3 Carbonaceous Chondrite

  April 16, 2014 from Answers Research Journal

  Meteorites have been used to date the earth with a 4.55 ± 0.07 Ga Pb-Pb isochron called the geochron.

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• Technical Research Paper

  Radiohalos in Multiple, Sequentially Intruded Phases of the Bathurst Batholith, NSW, Australia: Evidence for Rapid Granite Formation during the Flood

  March 5, 2014 from Answers Research Journal

  There is evidence for rapid granite formation during the Flood.

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• Technical In-Depth Article

  Rocks Around the Clock: Do Zircons Contain Reliable Time Stamps and Early Earth’s Secrets?

  Feb. 26, 2014 from Answers in Depth

  Despite debate about the accuracy of the uranium “clocks” they contain, scientists say they’ve found a zircon with a confirmed age of 4.4 billion years.

• Technical In-Depth Article

  Survey of Microbial Composition and Mechanisms of Living Stromatolites of the Bahamas and Australia: Developing Criteria to Determine the Biogenicity of Fossil Stromatolites

  Dec. 18, 2013 from Answers in Depth

  Microbes, fully-functioning stromatolites, and even stromatolite reefs may have been created by God before Day Three of the Creation Week.

• Technical In-Depth Article

  Radioisotopes and the Age of the Earth

  March 9, 2011 from Answers in Depth

  This article summarizes the purpose, history, and intermediate findings of the RATE project five years into an eight-year effort.

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• Technical In-Depth Article

  Measurable ¹⁴C in Fossilized Organic Materials: Confirming the Young Earth Creation-Flood Model

  Feb. 9, 2011 from Answers in Depth

  An astonishing discovery made over the past 20 years is that, almost without exception, organic samples from every portion of the Phanerozoic record show detectable amounts of ¹⁴C!

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• Technical In-Depth Article

  Catastrophic Plate Tectonics: A Global Flood Model of Earth History

  Oct. 27, 2010 from Answers in Depth

  Because of the enormous explanatory and predictive success of the plate tectonics model, we feel that at least some portion of plate tectonics theory should be incorporated into the creation model.

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