The Wasatch Formation is a sedimentary formation that dates back to the Tertiary Period, about 40 million years ago. This layer consists of sandstone, limestone and shale, all of which have been heavily eroded by wind, water and other geological processes over time. It can be seen in several locations around the park, including near the causeway and on the south end of the island. The Wasatch Formation is home to a variety of fossils, including leaves, petrified wood and shells. It also contains several unique minerals such as quartz, pyrite and selenite. This formation is an important part of the island's geologic history, providing evidence into how the area has changed over time.
The highest point on Antelope Island State Park is Frary Peak, at an elevation of 6,596 feet. It's a popular destination among hikers and outdoor enthusiasts due to its stunning views of the Great Salt Lake and the surrounding area. From the summit, visitors can see the Wasatch Mountains to the east and Stansbury Island to the west. Geologically speaking, Frary Peak is composed of pre-Cambrian quartzite and other rock types that have been heavily eroded over time by wind and water. The peak is named after a local Mormon pioneer who settled in the area in the late 1800s. Visitors to the peak can enjoy stunning views of the Great Salt Lake and its surrounding landscapes, leaving them with an appreciation for Antelope Island State Park's geologic wonders.
The Great Salt Lake
The Great Salt Lake is the largest natural lake in the western United States, covering an area of more than 1,700 square miles. It's known for its unique saline composition, which can range from 6 to 26 parts per thousand (ppt) depending on the time of year. This salt-dense water body is believed to have been formed during the Miocene era when tectonic plates shifted and created a depression in the middle of what is now Utah. The lake is an important habitat for a variety of waterfowl, fish and other wildlife species. It's also home to numerous recreational activities such as sailing, swimming, kayaking and fishing. Its high salinity has made it one of the most unusual bodies of water in the world.