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Global distribution of major outcrops of carbonate rocks (mainly limestone, except evaporites). The English word karst was borrowed from German Karst in the late 19th century, [6] which entered German usage much earlier, [7] to describe a number of geological, geomorphological, and hydrological features found within the range of the Dinaric Alps, stretching from the northeastern corner of ...
Karst topography is a geological formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but also in gypsum. [1] It has also been documented for weathering -resistant rocks, such as quartzite , given the right conditions. [ 2 ]
The earliest Carboniferous rocks sit conformably on top of the youngest Devonian in Illinois; Carboniferous rocks in the state are areally extensive, regionally very well-exposed, and form a large percentage of the state's bedrock. Illinois remained marine for much of the Carboniferous, with limestones making up most of the rock deposited ...
The Illinois River (Miami-Illinois: Inoka Siipiiwi [4]) is a principal tributary of the Mississippi River at approximately 273 miles (439 km) in length. Located in the U.S. state of Illinois , [ 5 ] the river has a drainage basin of 28,756.6 square miles (74,479 km 2 ). [ 6 ]
In Illinois: the Apple River and the Galena River (a.k.a. the Fever River) Although lying just to the north of the Driftless Area, the Saint Croix in Wisconsin and Minnesota is another important river that affected the area, as it was the outlet for Glacial Lake Duluth , forerunner to Lake Superior , when the eastern outlet was blocked by the ...
The Indiana Karst Conservancy is working to raise more awareness of the state’s unique karst landscapes. Trash and other materials get dumped into sinkholes and pits, leading to pollution ...
A Laodracon carsticola, or Khammouan karst dragon, perched on a rock. The new species has so far only been found in one karst formation in Khammouane Province, the study said.
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.