Here are teaching slides for Dates & Fakes: Geochronology of Snowball Earth. You can see a full-size version by clicking on the thumbnail. You can then download that slide individually by right mouse clicking on it; using the "Save As" command in the File menu; or in most cases, by simply dragging it to your desktop.

6.2: Here is the symbology used for subsequent geochronological slides.

6.3: U-Pb zircon age constraints on the Sturtian glaciation.

6.4: U-Pb zircon age constraints on the Marinoan glaciation.

6.5:U-Pb zircon age constraints on the Gaskiers glaciation