Jeff Tepper

Application of Sr Isotopic Data to Tuolumne Intrusive Series, Sierra Nevada, CA part of Petrology:Teaching Examples
In this problem set students are given Rb/Sr and 87Sr/86Sr data for whole rock and mineral samples from three granitic intrusions in the Sierra Nevada. They use these data (in EXCEL) to calculate isochron ages and ...

Variation Diagrams and the Evolution of Thingmuli Lavas, Iceland part of Petrology:Teaching Examples
In this problem set students are provided with an EXCEL spreadsheet containing major element analyses of lavas frm Thingmuli Volcano in Iceland. They are asked to construct variation diagrams (Harker plots) and ...