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The Illinois Basin is a Paleozoic depositional and structural basin in the United States, centered in and underlying most of the state of Illinois, and extending into southwestern Indiana and western Kentucky. The basin is elongate, extending approximately 400 miles (640 km) northwest-southeast, and 200 miles (320 km) southwest-northeast.
Adamite is a zinc arsenate hydroxide mineral, Zn 2 As O 4 OH. It is a mineral that typically occurs in the oxidized or weathered zone above zinc ore occurrences. Pure adamite is colorless, but usually it possess yellow color due to Fe compounds admixture. Tints of green also occur and are connected with copper substitutions in the mineral ...
The Illinois Basin is a northwest–southeast asymmetrical structural basin that is filled with more than 4000 meters of Paleozoic sedimentary rocks. The basin covers most of Illinois, and extends into western Indiana and western Kentucky.
The Shawnee Hills are a region within the larger Interior Low Plateaus physiographic province located in southern Illinois, southern Indiana, and western Kentucky. [1] In Illinois it rests mainly in an east–west arc roughly following the outline of the southern end of the Illinois Basin. Whereas Mississippian and Pennsylvanian Age rock layers ...
The Pope Mega Group is a geologic unit found in the Illinois Basin of southern Illinois, southwestern Indiana, and western Kentucky. [1] [2] In Indiana and Kentucky its equitant is the Buffalo Wallow Group. This unit grades from sandstones at its base into mix of limestones and sandstone and then a shale at its top. [3]
In the lower Ohio River valley in Illinois, Kentucky, and Indiana, the Mississippian-culture towns of Kincaid, Wickliffe, Tolu, and Angel Mounds have been more closely grouped together into a "Kincaid focus" archeological set, due to similarities in pottery assemblages and site plans. Most striking are the comparisons between the Kincaid and ...
Map of the Trace. The Trace was created by millions of migrating bison that were numerous in the region from the Great Lakes to the Piedmont of North Carolina. [2] It was part of a greater buffalo migration route that extended from present-day Big Bone Lick State Park in Kentucky, through Bullitt's Lick, south of present-day Louisville, and across the Falls of the Ohio River to Indiana, then ...
Kentucky's Green River runs through a broad alluvial plain, from which outcroppings of bedrock project. The plain is an area that was inundated during the Pleistocene by a water body dubbed Lake Green, which resulted in the deposition of large amounts of silt. The middens of this district are typically located along the prehistoric routes of ...