Electronic Data Submission for Paper 2002GC000323 PetroPlot: A plotting and data management tool set for Microsoft Excel Yongjun Su and Charles H. Langmuir (Department of Earth and Environmental Sciences, Columbia University, Palisades, New York, 10964, USA), Paul D. Asimow (Division of Geological and Planetary Sciences, California Institute of Technology, M/C 170-25, Pasadena, California, 91125, USA), Geochemistry, Geophysics, Geosystems, Volume 4, Number 1. doi: 10.1029/2002GC000323. Introduction This e-supplement provides the PetroPlot source files as well as a detailed tutorial explaining how to install the PetroPlot package and how to use the PetroPlot package for plotting and manipulation of geochemical data in the Microsoft Excel environment. It consists of a single PDF file that uses the hyperlinking function of Adobe Acrobat or Acrobat Reader to allow easy navigation through the tutorial. Files 1. 2002GC000323_PetroPlot_Tutorial.pdf This file is best viewed with Adobe Acrobat or Acrobat Reader. MacOS X's Preview application does not have active hyperlinks, which are used for cross-references within the tutorial. The tutorial covers the following subjects: FAQ, PetroPlotfiles, PetroPlot installation and startup, PetroPlot functions and utilities, Known problems, PetroPlot conventions, and Using the Visual Basic editor to view PetroPlot source code. 2. PetroPlot.xla As the core Excel add-in library file, "PetroPlot.xla" is required for all PetroPlot functions. Similar to other Excel add-in libraries, this file runs in the background in Excel. The source codes can be viewed in Visual Basic Editor. The tutorial explains how to choose whether to set the add-in to load whenever Excel is launched or to manually load the add-in when needed. 3. PetroPlotSpider.xls (Note: the name of this file should not be modified.) This is an Excel spreadsheet containing contains normalization standard values for spider diagrams. Required for the PetroPlot Spider Diagram function. 4. PetroPlotExampleData.xls An Excel file with petrology data for the demonstration purpose ONLY. Data source is Niu and Batiza (1997). In general, ordinary files to be processed with PetroPlot should be in similar format. 5. spline example.xls An Excel file for the demonstration of the spline functions. URL When updated, the revised PetroPlot package will be linked to the paper at the Geochemistry, Geophsyics, Geosystems website and also available for download from the PETDB website at Lamont-Doherty Earth Observatory. The most current version will always be found at: http://petdb.ldeo.columbia.edu/documentation/petroplot/PetroPlot.zip