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Mapping and Radiocarbon Dating Archaic Period Monuments: La Alberca Structure Complex, Highland Michoacán, Mexico by Mark F.Steinkraus June 2016 Ongoing collaborations with the Comunidad Indígena de Nuevo San Juan Parangaricutiro hold great potential for exploring the origins of sedentary ranked communities that predate others in Mesoamerica by as much as one thousand years.The prefix identifies the laboratory that processed the sample.The 'Wk' prefix shown here indicates that these samples were processed at the University of Waikato Radiocarbon Dating Laboratory.C ka BP) presented new challenges to scientists working on marine and terrestrial sequences from this important time interval.In particular, there is now an overriding imperative to increase the levels of precision by which events during this period can be dated and correlated.To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies.
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Site numbers in the United States are based on the "Smithsonian Trinomial System" where each State has its own number (e.g., WA=45), the County within the state has a two letter abbreviation (e.g., Crook County = CR), and sites within the county are given numbers consecutively as they are found and recorded (i.e., 45xxnnn).
So, a site labelled as "45CR121" would be the 121st site recorded in Crook County, Washington.
Although more weathered, this tephra is similar to the oldest tephra in the bottom of La Alberca Rockshelter.
The tephra is at least 7000 to 8000 years old (calibrated).
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