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I also cannot think of a single geological process that is inconsistent with an Earth that is many millions of years old.
ICR’s Radioisotopes and the Age of The Earth (RATE) program studied zircon mineral grains from a geothermal well in New Mexico.
It is true that any traces of original carbon-14 in a sample should be gone after 100,000 years.
This was long before the discovery of radioactivity in the 1890s or the development of radiometric dating techniques in the 1900s.If radiometric dating works—and I believe it reveals accurate dates most of the time—Christians should not be intimidated.Geologists have known for a long time that the isotope geochemistry of Earth is complex, and that radiometric dating does not always return what is considered to be a geologically-valid result, but there is no reason for old-Earth Christians to be intimidated by discrepant dates.One of these was the study done in the 1990s by Steven Austin of the Institute for Creation Research, in which ICR submitted samples from the 1986 dacite lava dome eruption of Mt. The YEC reasoning on this is that if radiometric dating cannot yield a “common sense” date on a sample of known age, how can scientists trust it for dating any rocks?There are several good critiques available of this YEC argument about the 1986 Mt St Helens samples (such as this article by Kevin Henke) , so I will only summarize: Dr.
To summarize, the YEC team used the present high rate of heat flow in this geothermal field and applied this to the entire thermal history of the area, rather than a thermal history model that takes into account the fact that these rocks have been much cooler for most of their history.