QTVR Visit to Parfreys Glen
This 6-node QTVR movie is a walking tour of Parfreys Glen, a beautiful natural area 45 minutes north of Madison on the south side of the Baraboo Hills. I compiled this movie as an example of how useful QTVR technology can be to geology. This virtual field trip will also be available as a small stand-alone application which will link to text and close up views of the walls of this small canyon.
Geologically, the resistant pink quartzite Baraboo Hills were an island in the Paleozoic (Middle to Late Cambrian) sea. The sea cliffs which lay less than a mile north of Parfreys Glen were buffeted by storm waves and broke up, shedding coarse conglomerates in layers interfingered with the beach and near shore sands deposited during normal weather. As you walk into the Glen, the cliffs rise up to meet you and the sandstone begins to show increasing amounts of coarse cobbles and boulders. These cobbles are concentrated in the storm deposit layers.
For those of you with slower connections to this site, here is a single node from the tour to give you an idea of what the Glen looks like. If your browser is not capable of (or not configured for) the display of embeded QuickTime movies you will have a blank space below with a "broken image" icon in it. In this case click on Stop 5 320x200 (276K).
These pictures were taken with the Apple QuickTake 150 and thus suffer from not having been made with a wide angle lens. They also lack the resolution of PhotoCD files made from a 35mm camera. On the other hand they were taken in about 2 hours and were immediately available for processing. The pictures were downloaded in the field to a Powerbook 540c (thanks Randy). These pictures were taken on Nov. 25th 1995 between 1 and 3 p.m.; the low sun angle provided a wide range of contrast and brightness situations which were beyond the ability of the QuickTake to compensate. The built-in flash was a great help, those walls which were in range of the flash are clearly identifiable in the movie. I have done some rudimentary image enhancement using Photoshop.
Thanks to Bob Boyle of Apple Computer for the loan of the equipment and software to complete this experiment and Dave Rasmussen also of Apple for some advice and sample templates. Thanks also to the New Media Center in DoIT for allowing me to do some stitching and dicing. You REALLY want a PowerPC to do this kind of work.