I'd add Fortress to your list in Lower Geyser Basin. Also Monument Geyser Basin. At West Thumb, isn't Fishing Cone a geyser? It most definitely has a cone, as does Big Cone, and Lakeshore Geyser. I guess partially it may be in how one defines substantial, as well as freestanding. Is Mortar not on your list because it isn't quite freestanding? Karen Low --- On Wed, 1/14/09, Jeff Cross <Jeff.Cross at wallawalla.edu> wrote: From: Jeff Cross <Jeff.Cross at wallawalla.edu> Subject: [Geysers] Cones To: "geysers at lists.wallawalla.edu" <geysers at lists.wallawalla.edu> Date: Wednesday, January 14, 2009, 9:27 PM How many substantial free-standing geyserite cones exist in Yellowstone? Upper Geyser Basin: Old Faithful Beehive Lion Castle Giant Grotto Rocket Mortar Lower Geyser Basin: White Dome Pink Cone Jet Clepsydra Lone Star Geyser Basin: Lone Star Geyser Shoshone Geyser Basin: Union Geyser Minute Man Geyser Heart Lake Geyser Basin: Puffing Spring Are there really none at Midway, Norris, Gibbon or West Thumb? It is interesting to note that of the cones I have listed (16), 8 of them (50%) are in the Upper Geyser Basin. One might also ask how to define a "cone." I am listing only those cones that have an arresting appearance. Low, mound-shaped masses of sinter, like those around Bulger Geyser, seem very different, almost as if they formed through a different process. Therefore I did not include them in the list. It would appear that cones are fairly rare. Any thoughts? Jeff Cross jeff.cross at wallawalla.edu_______________________________________________ Geysers mailing list Geysers at lists.wallawalla.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: </geyser-list/attachments/20090115/b9f0bdf4/attachment.html>