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fDesc[0] = "ISOPLOT is a flexible software tool for the analysis and interpretation of radiogenic-isotope data. It is developed by Dr Ken Ludwig of the Berkeley Geochronology Center.<br /> <br /> Isoplot can:<br /> <br /> -Construct U-Pb concordia plots and calculate ages using conventional concordia intercepts, the &ldquo;Concordia Age&rdquo; algorithm, 3-D planar concordia intercepts, or 3-D linear (&ldquo;Total U/Pb&rdquo;) isochrons;<br /> -Calculate uranium-series isochron ages using 3-D or 2-D isochrons and construct 230Th/238U-234U/238U evolution curves and isochrons;<br /> -Construct single-stage growth-curves for plots of common-Pb data;<br /> -Construct cumulative-probability histogram plots and linearized-probability diagrams;<br /> -Calculate and construct";

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