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Geode from the Warsaw Formation (Warsaw, Hancock County, Illinois) Type: ... Illinois [1] The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri.
Hamilton is a city in Hancock County, Illinois, United States. The population was 2,753 at the 2020 census, [ 3 ] a decline from 2,951 in 2010. [ 4 ] The city is located directly across the Mississippi River from Keokuk, Iowa .
A geode (/ ˈ dʒ iː. oʊ d /; from Ancient Greek γεώδης (geṓdēs) ' earthlike ') is a geological secondary formation within sedimentary and volcanic rocks. Geodes are hollow, vaguely spherical rocks, in which masses of mineral matter (which may include crystals) are secluded.
Hancock County is a county in the U.S. state of Illinois. According to the 2020 census, it has a population of 17,620. [1] Its county seat is Carthage, [2] and its largest city is Hamilton. The county is composed of rural towns with many farmers. Hancock County is part of the Fort Madison-Keokuk, IA-IL-MO Micropolitan Statistical Area.
Hamilton County is a county located in the U.S. state of Illinois. As of the 2020 census , its population was 7,993. [ 1 ] Its county seat is McLeansboro . [ 2 ]
Just across the rivers are the towns of Hamilton and Warsaw, Illinois, and Alexandria, Missouri. Keokuk, along with the city of Fort Madison, is a principal city of the Fort Madison-Keokuk micropolitan area, which includes all of Lee County, Iowa, Hancock County, Illinois and Clark County, Missouri.
Protected areas of Hamilton County, Illinois (2 P) Pages in category "Geography of Hamilton County, Illinois" The following 2 pages are in this category, out of 2 total.
The type locality is the Mazon River (or Mazon Creek), a tributary of the Illinois River near Morris, Grundy County, Illinois. The 25 to 30 meters of shale were formed approximately , during the Pennsylvanian period. The fossiliferous concretions are usually found within the thickest deposits of the Francis Creek Shale.