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Baraboo Hills
The Baraboo Range is a mountain range in Columbia County and Sauk County, Wisconsin. Geologically, it is a syncline fold consisting of highly eroded Precambrian metamorphic rock. It is about long and varies from 5 to in width. The Wisconsin River, previously traveling in a north to south direction, turns to the east just north of the range before making its turn to the west towards the Upper Mississippi River. The eastern end of the range was glaciated during the Wisconsinian glaciation, while the western half was not, and consequently, marks the eastern boundary of Wisconsin's Driftless Area. The city of Baraboo is in the center of the valley. The range was designated a National Natural Landmark in 1980. Geology These hills were formed from deposited sediment in a shallow sea 1.7 billion years ago. This sediment was metamorphized into quartzite, deformed, then uplifted. These outcrops may have been islands when the region was covered by shallow seas in the Cambrian.Hanson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wisconsin Highway 33
State Trunk Highway 33 (often called Highway 33, STH-33 or WIS 33) is a Wisconsin state highway running east–west across central Wisconsin. It is in length. Route description La Crosse to Baraboo WIS 33 begins east of the Mississippi River where it intersects U.S. Highway 14 (US 14) and US 61 just south of downtown La Crosse. Traveling east, it intersects with WIS 35. Leaving La Crosse, WIS 33 meanders eastward. It runs concurrently with WIS 162 from Newberg Corners to Middle Ridge. Further east, WIS 33 intersects WIS 27 in Cashton. Then, it briefly runs concurrently with WIS 131 in Ontario, then briefly meanders south through the Wildcat Mountain State Park, and then meanders back east. Even further east, WIS 33 runs concurrently with WIS 82 west of Hillsboro and then WIS 80 in Hillsboro. Both routes branch off together north from WIS 33 in Union Center. In La Valle, WIS 58 briefly runs concurren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Springs, Wisconsin
Rock Springs is a village in Sauk County, Wisconsin, United States, along the Baraboo River. The population was 327 at the 2020 census. History At the time of its founding, Rock Springs was known as Ableman, after Stephen Van Rensselaer Ableman, who settled there in 1851. The railroad has been a major influence on the village's growth. Surrounded by cliffs of Baraboo Quartzite, the village is two miles south of a notable rock formation located in Ableman Gorge, Van Hise Rock, which was used to explain the processes of structural geology by University of Wisconsin–Madison professor Charles R. Van Hise. Geography Rock Springs is located at (43.477698, −89.917030). According to the United States Census Bureau, the village has a total area of , of which, of it is land and is water. Demographics 2010 census As of the census of 2010, there were 362 people, 137 households, and 99 families living in the village. The population density was . There were 150 housing units at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's surface. Like uncemented sand, sandstone may be imparted any color by impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Because sandstone beds can form highly visible cliffs and other topography, topographic features, certain colors of sandstone have become strongly identified with certain regions, such as the red rock deserts of Arches National Park and other areas of the Southwestern United States, American Southwest. Rock formations composed of sandstone usually allow the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ableman's Gorge State Natural Area
Ableman's Gorge is a Wisconsin State Natural Areas Program, Wisconsin State Natural Area located near Rock Springs, Wisconsin. This 200 to 400-foot wide and 200-foot high gorge is cut by about of the Baraboo River in an "L" shape. The Natural Area is named after Stephen Van Rensselaer Ableman, who settled Rock Springs in 1851 and named the community after the gorge area. Formation The cliffs are composed of Baraboo Quartzite below Cambrian sandstone and conglomerate. The gorge formed along a layer of ancient sea sediment that hardened into sandstone then metamorphosis, metamorphized into harder quartzite rock before being lifted into a vertical layer. The area was later submerged under the sea again, which led to another sandstone layer capping the quartzite. The unique geological features of this gorge make it one of a few places where this type of rock can clearly be seen in the Midwestern United States. The gorge has a cooler climate than the surrounding areas, resulting in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endorheic Lake
An endorheic lake (also called a sink lake or terminal lake) is a collection of water within an endorheic basin, or sink, with no evident outlet. Endorheic lakes are generally Saline water, saline as a result of being unable to get rid of solutes left in the lake by evaporation. These lakes can be used as indicators of Human impact on the environment, anthropogenic change, such as irrigation or climate change, in the areas surrounding them. Lakes with subsurface drainage are called ''cryptorheic''. Components of endorheic lakes The two main ways that endorheic lakes accumulate water are through river flow into the lake (discharge) and precipitation falling into the lake. The collected water of the lake, instead of Discharge (hydrology), discharging, can only be lost due to either evapotranspiration or percolation (water sinking underground, e.g., to become groundwater in an aquifer). Because of this lack of an outlet, endorheic lakes are mostly salt water rather than fresh water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terminal Moraine
A terminal moraine, also called an end moraine, is a type of moraine that forms at the terminal (edge) of a glacier, marking its maximum advance. At this point, debris that has accumulated by plucking and abrasion, has been pushed by the front edge of the ice, is driven no further and instead is deposited in an unsorted pile of sediment. Because the glacier acts very much like a conveyor belt, the longer it stays in one place, the greater the amount of material that will be deposited. The moraine is left as the marking point of the terminal extent of the ice. Formation As a glacier moves along its path, the surrounding area is continuously eroding. Loose rock and pieces of bedrock are constantly being picked up and transported with the glacier. Fine sediment and particles are also incorporated into the glacial ice. The accumulation of these rocks and sediment together form what is called glacial till when deposited. Push moraines are formed when a glacier retreats from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devil's Lake State Park (Wisconsin)
Devil's Lake State Park is a state park located in the Baraboo Range in eastern Sauk County, Wisconsin, United States. It is just south of the city of Baraboo, around northwest of Madison, and is on the western edge of the last ice-sheet deposited during the Wisconsin glaciation. The state park encompasses , making it the largest in Wisconsin. The state park is known for its quartzite bluffs along the Devil's Lake, which was created by a glacier depositing terminal moraines that plugged the north and south ends of the gap in the bluffs during the last ice age approximately 12,000 years ago. The sand at the bottom of Devil's Lake is thought to be deposited by glaciers. There are many quartzite rock formations, such as Balanced Rock and Devil's Doorway, throughout the park. Effigy mounds are also located throughout the park. The park contains approximately eleven miles of the Ice Age Trail. Its scenery, along with its proximity to the Wisconsin Dells, has made it one of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devil's Lake (Wisconsin)
Devil's Lake is a lake in Sauk County, Wisconsin, United States. It is part of the South Range of the Baraboo Range, about south of the city of Baraboo, Wisconsin. It has no surface outlets, so by some definitions, it is endorheic; however, it possibly drains by underground channels into the Baraboo River, which would make the lake cryptorheic. The lake is one of the primary attractions of Devil's Lake State Park. It is also a popular recreation destination for watercraft, fishing, hiking, and climbing. Name Devil's Lake was so named because it is situated in a deep chasm that was thought to have no visible inlet or outlet. However, the Koshawago Spring, originating from the Koshawago Creek, provides an inlet to the lake on the southwest side. The term ''Devil's Lake'' is a misinterpretation of the Ho-Chunk name Te Wakącąk or Te Wakącągara. Day-wa-kahn-chunk-gera, which better translates to "Sacred Lake" or "Spirit Lake." Spirit Lake is highly significant in Ho-Chunk oral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strata
In geology and related fields, a stratum (: strata) is a layer of Rock (geology), rock or sediment characterized by certain Lithology, lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as either ''Bed (geology), bedding surfaces'' or ''bedding planes''.Salvador, A. ed., 1994. ''International stratigraphic guide: a guide to stratigraphic classification, terminology, and procedure. 2nd ed.'' Boulder, Colorado, The Geological Society of America, Inc., 215 pp. . Prior to the publication of the International Stratigraphic Guide, older publications have defined a stratum as being either equivalent to a single Bed (geology), bed or composed of a number of beds; as a layer greater than 1 cm in thickness and constituting a part of a bed; or a general term that includes both ''bed'' and ''Lamination (geology), lamina''.Neuendorf, K.K.E., Mehl, Jr., J.P., and Jackson, J.A. , eds., 2005. ''Glossary of Geolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentary Rock
Sedimentary rocks are types of rock (geology), rock formed by the cementation (geology), cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or deposited at Earth's surface. Sedimentation is any process that causes these particles to settle in place. Geological detritus originates from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or Mass wasting, mass movement, which are called agents of denudation. Biological detritus is formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies (marine snow). Sedimentation may also occur when dissolved minerals precipitate from aqueous solution, water solution. The sedimentary rock cover of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleozoic
The Paleozoic ( , , ; or Palaeozoic) Era is the first of three Era (geology), geological eras of the Phanerozoic Eon. Beginning 538.8 million years ago (Ma), it succeeds the Neoproterozoic (the last era of the Proterozoic Eon) and ends 251.9 Ma at the start of the Mesozoic Era. The Paleozoic is subdivided into six period (geology), geologic periods (from oldest to youngest), Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian. Some geological timescales divide the Paleozoic informally into early and late sub-eras: the Early Paleozoic consisting of the Cambrian, Ordovician and Silurian; the Late Paleozoic consisting of the Devonian, Carboniferous and Permian. The name ''Paleozoic'' was first used by Adam Sedgwick (1785–1873) in 1838 to describe the Cambrian and Ordovician periods. It was redefined by John Phillips (geologist), John Phillips (1800–1874) in 1840 to cover the Cambrian to Permian periods. It is derived from the Ancient Greek, Greek ''palaiós'' (π� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Topographic Prominence
In topography, prominence or relative height (also referred to as autonomous height, and shoulder drop in US English, and drop in British English) measures the height of a mountain or hill's summit relative to the lowest contour line encircling it but containing no higher summit within it. It is a measure of the independence of a summit. The key col ("saddle") around the peak is a unique point on this contour line and the ''parent peak'' (if any) is some higher mountain, selected according to various criteria. Definitions The prominence of a peak is the least drop in height necessary in order to get from the summit to any higher terrain. This can be calculated for a given peak in the following manner: for every path connecting the peak to higher terrain, find the lowest point on the path; the ''key col'' (or ''highest saddle (landform), saddle'', or ''linking col'', or ''link'') is defined as the highest of these points, along all connecting paths; the prominence is the differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
