The instructions for this exercise have 5 main parts. Click each part name to see the steps in that part.
Use the NAVDAT database to download and save isotopic data from young mafic volcanic rocks from the western United States.
Test the assumption that age-correcting the 87
Sr data is not necessary for young volcanic rocks.
Use the plotting and mapping tools on the NAVDAT website to analyze the data downloaded from NAVDAT.
Interpret the spatial and isotopic variations on your maps and graphs.
Summarize what you have discovered about mantle sources of mafic magmas in the western U.S.