The Failure of U-Th-Pb "Dating"; at Koongarra, Australia | The Institute for Creation Research
 
The Failure of U-Th-Pb "Dating"; at Koongarra, Australia

Download PDFDownload The Failure of U-Th-Pb "Dating"; at Koongarra, Australia PDF

Published in: CEN Technical Journal, volume 9, number 1, pp. 71–92, 1995.

© 1995 Answers in Genesis A. C. N. 010 120 304. All Rights Reserved.

Abstract

As with other radiometric “dating” methods, the U-Pb and Pb-Pb isochron methods have been questioned in the open literature, because often an excellent line of best fit between ratios obtained from a set of good cogenetic samples gives a resultant “isochron” and yields a derived “age” that has no geological meaning. At the Koongarra uranium deposit, Australia, there is ample evidence of open system behavior, or repeated migration, of U and Pb—ore textures, mineral chemistry, supergene alteration, uranium/daughter disequilibrium, and groundwater and soil geochemistry. Yet U-Th-Pb isotopic studies of the uranium ore, host rocks, and soils have produced an array of false “isochrons” that yield “ages” which are geologically meaningless. Even a claimed near-concordant U-Pb “age” of 862 Ma (million years) on one uraninite grain is identical to a false Pb-Pb isochron “age,” but neither can be connected to any geological event. The open system behavior of the U-Th-Pb system is clearly the norm, as is the resultant mixing of radiogenic Pb with “common” or background Pb, even in soils in the surrounding region, apparently even up to 17 km away! Because no geologically meaningful results can be interpreted from the U-Th-Pb data at Koongarra (three uraninite grains even yield a 232Th/208Pb “age” of 0 Ma), serious questions must be asked about the validity of the fundamental/foundational basis of the U-Th-Pb “dating” method. This makes the task of creationists building their model for the geological record much easier, since claims of U-Th-Pb radiometric “dating” having “proven” the claimed great antiquity of the earth, its strata and fossils can be justifiably ignored.

Keywords

Radiometric Dating, U-Pb and Pb-Pb Isochron Methods, Koongarra, Uranium Deposit, Open-System Behavior, Ore Textures, Mineral Chemistry, Supergene Alteration, Uranium-Daughter Disequilibrium, Groundwater and Soil Geochemistry, Uraninites, Galenas, False Isochrons, Mixing, Zero “Ages”

For Full Text

Please see the Download PDF link above for the entire article.

The Latest
CREATION PODCAST
What About Transitional Fossils? | The Creation Podcast: Episode...
Transitional fossils supposedly contain evidence of one kind of creature morphing into another, and purportedly provide proof for evolution. But is...

NEWS
Did Our Middle Ear Evolve from Fish Gills?
A recent SciTechDaily article begins by saying, “Embryonic and fossil evidence proves that the human middle ear evolved from the spiracle of fishes”1...

CREATION.LIVE PODCAST
Can Scripture Be Trusted? | Creation.Live Podcast: Episode 8
Both believers and skeptics can find themselves asking if Scripture can be taken at its word. Is it scientifically accurate? Can its history be trusted?...

NEWS
Cambrian Soft Tissue Defies Evolution
Paleontologists have discovered “early fossils [of] simple hollow tubes ranging from a few millimetres to many centimetres in length.”1...

NEWS
Fruit Fly Jitters
Researchers working with fruit flies–the ubiquitous lab animal–have discovered the flies are able to undergo an amazing ocular process called...

CREATION PODCAST
Can Radioisotope Dating Be Trusted? | The Creation Podcast: Episode...
Carbon dating is a common method used to determine the ages of fossils and other materials, but carbon14 deteriorates quite quickly. How can it still...

NEWS
Prepare for the Big Non-Event!
In 1950 the famed Italian physicist Enrico Fermi asked his coworkers at the lunch table the simple metaphysical question in regard to possible aliens...

NEWS
Move Toward the Enemy: Fighting for Truth in Science
Honor to the soldier and sailor everywhere, who bravely bears his country’s cause. Honor, also, to the citizen who cares for his brother in the...

NEWS
Evolving Mammals?
The evolution of mammals from non-mammals, like the evolution of all other animal groups, has been, and will always be, problematic. English paleontologist...

NEWS
Butterfly Variation
Butterflies have made science news again, this time in regard to a master gene called WntA: “a combined team of researchers from Cornell University...