On the other hand, numerous lunar rocks contain such big amounts of what exactly is regarded as extra argon that dating by K/Ar just isn’t also reported. (77, p. 200)
The citation because of this declaration is always to a study by Turner (128). Turner, nevertheless, made no comment that is such excess argon in lunar rocks, and there are not any information in the report on which this type of conclusion could possibly be based. The declaration by Rofahl and Segraves (77) is actually unjustifiable.
Volcanic stones made by lava flows which took place Hawaii into the years 1800-1801 were dated by the potassium-argon technique.
Extra argon produced ages that are apparent from 160 million to 2.96 billion years. (77, p. 200)
Similar rocks that are modern in 1801 near Hualalai, Hawaii, had been discovered to offer potassium-argon many years which range from 160 million years to 3 billion years. (92, p. 147)
Kofahl and Segraves (77) and Morris (92) cite a scholarly research by Funkhouser and Naughton (51) on xenolithic inclusions when you look at the 1801 movement from Hualalai Volcano in the Island of Hawaii.
The 1801 movement is uncommon as it holds extremely abundant inclusions of stones international towards the lava. These inclusions, called xenoliths (meaning international rocks), comprise mainly of olivine, a pale-green iron-magnesium mineral that is silicate. (mais…)