Radiometric dating problem set

Posted by / 17-Feb-2020 10:46

Radiometric dating problem set

I did not discuss this technique because it seems a pretty straightforward combination of various parent-daughter relationships.

Uniformitarians assume magmas crystallized slowly over millions of years under conditions of thermodynamic equilibrium.If there is more than one metamorphic event, and for almost every situation there would be many, the intersection of the line with the Concordia is meaningless.” I note that in the Wikipedia article that you identify, in the 0.1–1 percent range” (my emphasis) for this technique, confirming the point I made in my article that the uncertainties quoted for radiometric ages (and indeed all other quantities) are a measure of precision (or repeatability) of the .I also note that the last sentence in the lead-in section identifies someone as “having used it [this technique] to obtain one of the earliest accurate estimates of the age of the Earth.” However, I would question how it is known that the age estimate is accurate.I would note, however, that the efficiency of the exclusion was not mentioned (i.e.is 100% of any lead excluded from the crystal or, perhaps, less than 100%).

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However, the biblical scenario suggests magmas crystallized quickly, and anticipates non-equilibrium conditions, and this would affect the way lead would have been incorporated in the zircon crystals.

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