Revisiting the Isochron Age Model, Part 1 | The Institute for Creation Research
Revisiting the Isochron Age Model, Part 1

Radioactive dating is based on the decay rate of a starting radioactive isotope (the parent) into its stable counterpart (the daughter). An age is assigned to an object by measuring the quantity of each isotope and calculating how long it would take for the parent to decay into the daughter. Since the mid-20th century, the isochron age model has been the standard for dating rocks, minerals, and crystals via the decay of certain radioisotopes they contain.

This model had its origins in a rather obtuse paper published in 1960. Ironically, even the authors of this paper admitted that the potassium feldspars from the granitic rocks they analyzed gave a wide range of supposed ages. It’s widely claimed that this model eliminates the need for any assumptions about the initial amount of the daughter isotopes when dating an object using the decay of specific isotopes within that object. But does it?

In the next two articles we’ll take a closer look at the isochron age model and evaluate its ability to accurately assess the absolute historical age of an object. We will use the Rb-Sr (rubidium-strontium) decay pair for demonstration since it employs the least number of secondary assumptions among the various decay pairs used in radioisotope dating.

Click here to read the full article.

Click here for Revisiting the Isochron Age Model, Part 2.

Cite this article: Vernon R. Cupps, Ph.D. 2020. Revisiting the Isochron Age Model, Part 1. Acts & Facts. 49 (6).

The Latest
NEWS
Ireland’s First Dinosaur Bones Found in Flood Rocks
Ireland finally has some dinosaur fossils of its own.1 The ground-breaking discovery came as a bit of a surprise, however, as the bones were...

NEWS
Control Loops in Humans and Nature
Ever had a blood test? Along with a value measured, there are also the normal max/min limits for that value. This implies that the body normally controls...

NEWS
Creation and Climate Science with Dr. Jake Hebert
ICR physicist Dr. Jake Hebert* recently made a guest appearance on Good Heavens! A Podcast About the Universe with Wayne and Dan. Dr. Hebert presented...

NEWS
Inside May 2021 Acts & Facts
How should Christians respond when authorities are in conflict with God’s Word? Can we trust scientific measurements and reports about fossil...

ACTS & FACTS
Creation Kids: Volcanoes
Christy Hardy and Susan Windsor* You’re never too young to be a creation scientist! Kids, discover fun facts about God’s creation with...

ACTS & FACTS
Tributes of Honor and Remembrance
At the end of a long day, a boss I had early in my career would often tell me, “No more today, Henry. My brain is full.” I found his comments...

APOLOGETICS
Guided by Lynx to Appreciate Christ
Not all tour guides in Alaska are human. Amazing animals of Alaska can guide us into learning creation truth. In fact, such animals should direct us—like...

ACTS & FACTS
Zion National Park: Evidence of Deep Water Sand Waves
Brian Thomas, Ph.D., and Tim Clarey, Ph.D.* It was like driving into another world when we emerged from Zion-Mount Carmel Tunnel right at dawn....

ACTS & FACTS
Is the Bible Evidence for Creation?
Have you ever had a skeptic tell you to keep the Bible out of it when discussing origins? Skeptics claim we Christians argue in a circle, that we are...

ACTS & FACTS
Vertebrate Origins on the Ropes…Again
In 1859, the Western world was turned upside down by the publication of Charles Darwin’s The Origin of Species by Means of Natural Selection or...