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In other words, they only represent a 'snapshot' look using the latest data from 2010.Nonetheless, it is important to recognize that such marriage patterns have evolved and changed over time. The higher the uranium-to-lead ratio of a rock, the more the Pb-206/Pb-204 and Pb-207/Pb-204 values will change with time.
This value is derived from several different lines of evidence.A plot is constructed of Pb-206/Pb-204 versus Pb-207/Pb-204.If the solar system formed from a common pool of matter, which was uniformly distributed in terms of Pb isotope ratios, then the initial plots for all objects from that pool of matter would fall on a single point.Further, the processes of erosion and crustal recycling have apparently destroyed all of the earliest surface.The oldest rocks which have been found so far (on the Earth) date to about 3.8 to 3.9 billion years ago (by several radiometric dating methods).
These laws actually made the situation worse because Asian men were no longer able to bring their wives over to the U. So in a way, those who wanted to become married had no other choice but to socialize with non-Asians. servicemen who fought and were stationed overseas in Asian countries began coming home with Asian "war brides." Data show that from 1945 into the 1970s, thousands of young women from China, Japan, South Korea, the Philippines, and later Viet Nam came to the U. One of the best research articles on this topic is a study conducted by Shinagawa and Pang entitled "Asian American Panethnicity and Intermarriage," reprinted in the highly recommended . The other major component of the table is that it presents different numbers depending on which statistical model is used.