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Salt found within the formation. Named by. James Dwight Dana. The Salina Group or Salina Formation is a Late Silurian -age, Stratigraphic unit of sedimentary rock that is found in Northeastern and Midwestern North America. Named for its Halite beds, the phrase "Salina Group" was first used as a descriptive term by James D. Dana in 1863.
In these cases, halite is said to be behaving like a rheid. Unusual, purple, fibrous vein-filling halite is found in France and a few other localities. Halite crystals termed hopper crystals appear to be "skeletons" of the typical cubes, with the edges present and stairstep depressions on, or rather in, each crystal face. In a rapidly ...
40°28′27″N 89°50′48″W / 40.47417°N 89.84667°W / 40.47417; -89.84667. Area. 2,032 acres (822 ha) Established. 1950. Governing body. Illinois Department of Natural Resources. Spring Lake State Fish and Wildlife Area is an Illinois state park on 2,032 acres (822 ha) in Tazewell County, Illinois, United States.
Starved Rock State Park is a state park in the U.S. state of Illinois, characterized by the many canyons within its 2,630 acres (1,064 ha).Located just southeast of the village of Utica, in Deer Park Township, LaSalle County, Illinois, along the south bank of the Illinois River, the park hosts over two million visitors annually, the most for any Illinois state park.
Horseshoe Lake, a National Natural Landmark, is located in the American Bottom of Illinois within the greater St. Louis metropolitan area, is 2,400 acres (10 km 2) in size, and is the second-largest natural lake in Illinois after Lake Michigan. An oxbow lake which is a remnant of a Mississippi River meander, the lake's elevation is 403 feet ...
9.1 ft (2.8 m) [1] Max. depth. 25 ft (7.6 m) Crab Orchard Lake is a 6,965-acre (28.2 km²) reservoir in Williamson County, Illinois. It is the centerpiece of the Crab Orchard National Wildlife Refuge. It is fed by Devils Kitchen Lake and Little Grassy Lake, which are also within the National Wildlife Refuge. [2]
Horseshoe Lake is a 2,007 acres (812 ha) natural oxbow lake in Alexander County, Illinois. [1] It is the site of Illinois's Horseshoe Lake State Fish and Wildlife Area, a state park 10,645 acres (43 km 2) in size. It has a 20 miles (32 km) shoreline and a depth of 4 ft (1.2 m), with a maximum depth of 5–6 feet (1.5–1.8 m).
52 Driftless Area (far northwestern Illinois) 52a - Savanna Section. 52b - Paleozoic Plateau/Coulee Section. 53 Southeastern Wisconsin Till Plains (northern Illinois) 53a - Rock River Drift Plain. 53b - Kettle Moraines. 54 Central Corn Belt Plains (northern and central Illinois) 54a - Illinois/Indiana Prairies. 54b - Chicago Lake Plain.