Interactive Phase Diagrams
Phase diagrams may include large amounts of information, and can be difficult to understand without serious study. The use of interactive web technologies can be very useful as an aid in comprehension. Several types of interactive phase diagrams have already been published in GMR and this page highlights some of these implementations.
Spear (1999; GMR, v1n3) used an image map to illustrate how an interactive petrogenetic grid would behave. The user clicks on a P-T region of the grid and the appropriate AFM diagram is displayed. An image map is used to supply links for user-clicks on various parts of a web image. In this example, the viewer clicks on a part of the petrogenetic grid and the appropriate AFM diagram appears in a new window. To see how it works, click on the following image and then click on the enlarged P-T grid that will open in a new window.
Also used in Spear (1999; GMR, v1n3) were quicktime movies showing the evolution of AFM assemblages along various P-T paths. To watch the movie, click on the image. This is a fairly large file (1.3 Mb), so it may take a while to download if your internet connection is slow.
Tinkham et al. (2001; GMR v3n1) used overlays in the pdf document to allow the viewer to readily compare stability fields of different assemblages on a P-T pseudosection. Click on the phase diagram to see the interactive pdf image. Drag your mouse across the index mineral boxes on the bottom of the figure to see different parts of the phase diagram highlighted.
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