Can carbon 14 dating lava flows
;) Where did these samples come from, and why were they sent to labs for radiometric dating?
In 1993, several samples of charred and petrified wood were collected during construction of a mining ventilation shaft in central Queensland.
If any argon was trapped in the mineral structure, however, then the rock will appear far older than it actually is.
We have known for half a century that excess argon may be trapped in lava flows (especially underwater flows under high pressure), so much research in geochronology is devoted to improving the models.
In 2013 the K–Ar method was used by the Mars Curiosity rover to date a rock on the Martian surface, the first time a rock has been dated from its mineral ingredients while situated on another planet.
One point lost by Bill Nye in the recent debate with Ken Ham was the repeated assertion that YEC researchers had dated fossil wood ~1,000 times younger than the basalt in which it was encased.
These factors introduce error limits on the upper and lower bounds of dating, so that final determination of age is reliant on the environmental factors during formation, melting, and exposure to decreased pressure and/or open-air.The wood samples were seemingly well preserved inside the lava flow that encased them. The 24-page publication is rather verbose, reading more like a drawn-out lab report than a scientific study, but it contains all the details necessary to assess the feasibility of Dr. Wait, if the fossil wood and basalt are both older than 6,000 years, doesn't Ken Ham undermine his own position by citing this study?Since the layers of basalt overlay early Cenozoic sediments, the expected age of the lava flow might be a few tens of millions of years. I've described at length how apologists at Answers in Genesis use the radiocarbon and Potassium-Argon (K-Ar) methods to argue for a young Earth.To obtain the content ratio of isotopes K in a rock or mineral, the amount of Ar is measured by mass spectrometry of the gases released when a rock sample is melted in vacuum.The potassium is quantified by flame photometry or atomic absorption spectroscopy.