The Wikibook Historical Geology has a page on the topic of: Thus, as a melt undergoes fractional crystallization from a mafic to a more felsic composition, the abundance of Sm and Nd changes, as does the ratio between Sm and Nd. From Wikipedia, the free encyclopedia. Radiogenic Isotope Geology2nd ed. Log in. Acta In many cases, Sm-Nd and Rb-Sr isotope data are used together.
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Harley. i have worked as a stripper all around the world and have much to offer in way of conversation also. i have 12 years experience so i can do for you a nice striptease or a lapdance , see the photo shoot of me when i used to do this. it will be a great show as i have also been a gymnast and still keep very fit and flexible as you will see in my photos !