Show 40 cate pattern of bays estuaries and peninsulas Most of the islands of the present lake were completely submerged and many of the present mountains were surrounded by water of this great lake occupied the present site of Great Salt Lake Salt Lake Desert Tooele and Rush The main body Talleys Salt Lake valley (where Salt Lake City now stands) and almost all of Davis Weber and Boxelder Counties It had a mean depth of about 800 feet® This body was dotted with islands large and small Promontory Mountain was cut off from the mainland at the pass used by the Central Pacific Railroad Pilot Peak was also cut off Fremont Island hardly broke the surface while later Stansbury and Antelope were islands with much smaller dimensions than they have today Desert ranges of the present Salt Lake Desert such as Silver Islet Terrace Mountain and possibly covered with a fine Carrington Gunnison and other Lakeside Mountain were islands covering of vegetation smaller islands of the present lake were completely submerged Estuaries extended up Emigration Little "Weber Ogden in the last three stretched Utah 6 Water reached nearly to and extended almost to Mantua and Boxelder canyons covered Huntsville Morgan Cottonwood Bay See Map IX canyons respectively To the south which covered most of Utah p 41 valley the |