The Cause of Anomalous Potassium-Argon "Ages" for Recent Andesite Flows at Mt. Ngauruhoe, New Zealand, and the Implications for Potassium-Argon "Dating" | The Institute for Creation Research
 
The Cause of Anomalous Potassium-Argon "Ages" for Recent Andesite Flows at Mt. Ngauruhoe, New Zealand, and the Implications for Potassium-Argon "Dating"

Download PDFDownload The Cause of Anomalous Potassium-Argon "Ages" for Recent Andesite Flows at Mt. Ngauruhoe, New Zealand, and the Implications for Potassium-Argon "Dating" PDF

Presented at the Fourth International Conference on Creationism, Pittsburgh, Pennsylvania, August 3–8, 1998. Published in: Proceedings of the Fourth International Conference on Creationism, R. E. Walsh (editor), pp. 503–525.

© 1998 Creation Science Fellowship, Inc., Pittsburgh, Pennsylvania, USA. All Rights Reserved.

Abstract

New Zealand’s newest and most active volcano, Mt. Ngauruhoe in the Taupo Volcanic Zone, produced andesite flows in 1949 and 1954, and avalanche deposits in 1975. Potassium-argon “dating” of five of these flows and deposits yielded K-Ar model “ages” from <0.27Ma to 3.5±0.2 Ma. “Dates” could not be reproduced, even from splits of the same samples from the same flow, the explanation being variations in excess 40Ar* content. A survey of anomalous K-Ar “dates” indicates they are common, particularly in basalts, xenoliths, and xenocrysts such as diamonds that are regarded as coming from the upper mantle. In fact, it is now well established that there are large quantities of excess 40Ar* in the mantle, which in part represent primordial argon not produced by in situ radioactive decay of 40K and not yet outgassed. And there are mantle-crust domains between, and within, which argon circulates during global tectonic processes, magma genesis, and mixing of crustal materials. This has significant implications for the validity of K-Ar and 40Ar/39Ar “dating.”

Keywords

Andesite, 1949–1975 Flows, Mt. Ngauruhoe, New Zealand, Potassium-Argon Dating, Anomalous Model “Ages,” Excess 40Ar*, Excess 40Ar* in Rocks and Minerals, Upper Mantle, Geochemical Reservoirs, Mantle-Crust Domains, Crustal Mixing, Magma Genesis

For Full Text

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

The Latest
NEWS
Embarrassment Continues over Evolutionary Blunder about “Junk...
Recent research from the Okinawa Institute of Science and Technology Graduate University (OIST) continues to highlight how evolutionary theory influenced...

NEWS
God’s Plan Is Best: Salmon Need Saltwater Acclimation
Once again, results are better when aquaculture imitates the natural life cycle of Atlantic salmon.1,2 In other words, the closer fish farmers...

NEWS
Inside August 2020 Acts & Facts
Have you heard about ICR’s new President and Chief Operating Officer, Dr. Randy Guliuzza? What can we learn from an old prayer? Is creation evidence...

NEWS
After 30 Years, Red Kites Soar in British Skies
Good news is always welcome. So, it’s good to learn of another conservation comeback. This time it’s the red kite happily soaring in Great...

CREATION PODCAST
Meet Dr. G
Hear the history and heart of ICR’s newly appointed President and Chief Operating Officer, Dr. Randy Guliuzza. He has served as ICR’s National...

ACTS & FACTS
'Doing Business' in Good Times and Bad
No doubt many of you, like me, have been earnestly looking for the return of the Lord Jesus Christ. He called all believers to be godly “salt”...

APOLOGETICS
Sentinels Are Needed in Perilous Times
Watch out! Dangers lurk everywhere—these are surely perilous times.1 One of the apologetics-exhorting themes in Jude’s epistle...

ACTS & FACTS
Why Don't Raindrops Bomb Butterfly Wings?
Okay, I admit most folks have probably not thought to ask this creation question. But a bigger question gets answered when we examine the fantastic...

ACTS & FACTS
Believe Anyway
by Scott Arledge and Brian Thomas, Ph.D. Some within the creation community make the claim that they would believe God’s Word about the age...

DISCOVERY CENTER
The ICR Discovery Center for Science & Earth History Updates*
Plan your trip at ICRdiscoverycenter.org, where you’ll find ticket information, discounted rates for nearby hotels, and links to other...