Sr isotope dating


14-Jul-2017 04:30

sr isotope dating-59

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Rocks derived from recycling of crustal material are derived from sources that have had time to accumulate radiogenic Sr-87, and can have initial ratios of 0.710 or greater.

Rubidium is directly below potassium in the periodic table, while strontium is directly below calcium.

Early attempts at Rubidium-Strontium dating made use of the fact that the Sr-87/Sr-86 ratio in rubidium-poor samples was about 0.7.

So it is possible for rubidium to diffuse out of place.Measured foraminifera of this study, having a size between 250 µm and 400 µm, were sampled from the carbonate basement of a ferromanganese crust in western Pacific.



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