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Backbone State Park
Backbone State Park is Iowa's oldest state park, dedicated in 1919. Located in the valley of the Maquoketa River, it is approximately three miles (5 km) south of Strawberry Point in Delaware County. It is named for a narrow and steep ridge of bedrock carved by a loop of the Maquoketa River originally known as the ''Devil's Backbone''. The initial were donated by E.M. Carr of Lamont, Iowa. Backbone Lake Dam, a relatively low dam built by the Civilian Conservation Corps (CCC) in the 1930s, created Backbone Lake. The CCC constructed a majority of trails and buildings which make up the park. History The area of the Devil's Backbone was a favorite of natural scientists such as W.J. McGee, Thomas Macbride, and Samuel Calvin who visited it to study its ancient geologic formations. with Edward M. Carr bought in the 1890s to protect the Backbone Ridge from destruction. MacBride and members of the Iowa Park and Forestry Association thought of it as a prime location for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rustic Architecture
Rustic architecture is a style of architecture in the United States, used in rural government and private structures and their landscape interior design. It was influenced by the American craftsman style. According to the National Park Service, “The style of architecture which has been most widely used in our forested National Parks, and other wilderness parks, is generally referred to as "rustic.” It is, or should be, something more than the worn and misused term implies. It is earnestly hoped that a more apt and expressive designation for the style may evolve, but until it appears, "rustic," in spite of its inaccuracy and inadequacy, must be resorted to...." Rustic Architecture related to national parks is sometimes referred to as Parkitecture. Rustic styles and types * National Park Service Rustic style which applies to U.S. National Park Service designed structures. * WPA Rustic architecture of the U.S. Works Project Administration. * Great Depression era park projects b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sundial
A sundial is a horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the ''dial'') and a gnomon, which casts a shadow onto the dial. As the Sun appears to move through the sky, the shadow aligns with different hour-lines, which are marked on the dial to indicate the time of day. The ''style'' is the time-telling edge of the gnomon, though a single point or ''nodus'' may be used. The gnomon casts a broad shadow; the shadow of the style shows the time. The gnomon may be a rod, wire, or elaborately decorated metal casting. The style must be parallel to the axis of the Earth's rotation for the sundial to be accurate throughout the year. The style's angle from horizontal is equal to the sundial's geographical latitude. The term ''sundial'' can refer to any device that uses the Sun's altitude or azimut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Civilian Conservation Corps Museums
Civilians under international humanitarian law are "persons who are not members of the armed forces" and they are not " combatants if they carry arms openly and respect the laws and customs of war". It is slightly different from a non-combatant, because some non-combatants are not civilians (for example, military chaplains who are attached to the belligerent party or military personnel who are serving with a neutral country). Civilians in the territories of a party to an armed conflict are entitled to certain privileges under the customary laws of war and international treaties such as the Fourth Geneva Convention. The privileges that they enjoy under international law depends on whether the conflict is an internal one (a civil war) or an international one. In some nations, uniformed members of civilian police or fire departments colloquially refer to members of the public as civilians. Etymology The word "civilian" goes back to the late 14th century and is from Old French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Civilian Conservation Corps In Iowa
Civilians under international humanitarian law are "persons who are not members of the armed forces" and they are not " combatants if they carry arms openly and respect the laws and customs of war". It is slightly different from a non-combatant, because some non-combatants are not civilians (for example, military chaplains who are attached to the belligerent party or military personnel who are serving with a neutral country). Civilians in the territories of a party to an armed conflict are entitled to certain privileges under the customary laws of war and international treaties such as the Fourth Geneva Convention. The privileges that they enjoy under international law depends on whether the conflict is an internal one (a civil war) or an international one. In some nations, uniformed members of civilian police or fire departments colloquially refer to members of the public as civilians. Etymology The word "civilian" goes back to the late 14th century and is from Old French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dundee, Iowa
Dundee is a city in Delaware County, Iowa, United States. The population was 198 at the time of the 2020 census. Geography Dundee is located at (42.578842, -91.547116) along the Maquoketa River. Dundee was established in 1887. According to the United States Census Bureau, the city has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 174 people, 79 households, and 40 families living in the city. The population density was . There were 88 housing units at an average density of . The racial makeup of the city was 100.0% White. Hispanic or Latino of any race were 1.7% of the population. There were 79 households, of which 29.1% had children under the age of 18 living with them, 39.2% were married couples living together, 3.8% had a female householder with no husband present, 7.6% had a male householder with no wife present, and 49.4% were non-families. 43.0% of all households were made up of individuals, and 20.3% had someone living alo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. However, in regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst features may occur only at subsurface levels and can be totally missing above ground. The study of ''paleokarst'' (buried karst in the stratigraphic column) is important in petroleum geology because as much as 50% of the world's hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology The English word ''karst'' was borrowed from German in the late 19th century, which entered German much earlier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinkhole
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are locally also known as ''vrtače'' and shakeholes, and to openings where surface water enters into underground passages known as ''ponor'', swallow hole or swallet. A ''cenote'' is a type of sinkhole that exposes groundwater underneath. A ''sink'' or ''stream sink'' are more general terms for sites that drain surface water, possibly by infiltration into sediment or crumbled rock. Most sinkholes are caused by karst processes – the chemical dissolution of carbonate rocks, collapse or suffosion processes. Sinkholes are usually circular and vary in size from tens to hundreds of meters both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide. Formation Natural processes Sinkholes may capture surf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurian
The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozoic Era. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out. One important event in this period was the initial establishment of terrestrial life in what is known as the Silurian-Devonian Terrestrial Revolution: vascular plants emerged from more primitive land plants, dikaryan fungi started expanding and diversifying along with glomeromycotan fungi, and three groups of arthropods (myriapods, arachnids and hexapods) became fully terrestrialized. A significant evolutionary milestone during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolomite (rock)
Dolomite (also known as dolomite rock, dolostone or dolomitic rock) is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite, CaMg(CO3)2. It occurs widely, often in association with limestone and evaporites, though it is less abundant than limestone and rare in Cenozoic rock beds (beds less than about 66 million years in age). The first geologist to distinguish dolomite rock from limestone was Belsazar Hacquet in 1778. Most dolomite was formed as a magnesium replacement of limestone or of lime mud before lithification. The geological process of conversion of calcite to dolomite is known as dolomitization and any intermediate product is known as dolomitic limestone. The "dolomite problem" refers to the vast worldwide depositions of dolomite in the past geologic record in contrast to the limited amounts of dolomite formed in modern times. Recent research has revealed sulfate-reducing bacteria living in anoxic conditions precipitate dolomite which ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wisconsinian Glaciation
The Wisconsin Glacial Episode, also called the Wisconsin glaciation, was the most recent glacial period of the North American ice sheet complex. This advance included the Cordilleran Ice Sheet, which nucleated in the northern North American Cordillera; the Innuitian ice sheet, which extended across the Canadian Arctic Archipelago; the Greenland ice sheet; and the massive Laurentide Ice Sheet, which covered the high latitudes of central and eastern North America. This advance was synchronous with global glaciation during the last glacial period, including the North American alpine glacier advance, known as the Pinedale glaciation. The Wisconsin glaciation extended from approximately 75,000 to 11,000 years ago, between the Sangamonian Stage and the current interglacial, the Holocene. The maximum ice extent occurred approximately 25,000–21,000 years ago during the last glacial maximum, also known as the ''Late Wisconsin'' in North America. This glaciation radically altered the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Driftless Area
The Driftless Area, a topographical and cultural region in the American Midwest, comprises southwestern Wisconsin, southeastern Minnesota, northeastern Iowa, and the extreme northwestern corner of Illinois. Never covered by ice during the last ice age, the area lacks the characteristic glacial deposits known as drift. Its landscape is characterized by steep hills, forested ridges, deeply carved river valleys, and karst geology with spring-fed waterfalls and cold-water trout streams. Ecologically, the Driftless Area's flora and fauna are more closely related to those of the Great Lakes region and New England than those of the broader Midwest and central Plains regions. The steep riverine landscape of both the Driftless Area proper and the surrounding Driftless-like region are the result of early glacial advances that forced preglacial rivers that flowed into the Great Lakes southward, causing them to carve a gorge across bedrock cuestas, thereby forming the modern incised upper Mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FI0005353
FI or fi may refer to: Places *Falkland Islands, a British Overseas Territory *Finland (ISO country code FI) **Finnish language (ISO 639 alpha-2 code "fi") ** .fi, top-level domain of Finland * Province of Firenze, Italy Arts, entertainment, and media * ''fi'' (album), a 2005 album by Bibio * ''Fi'' (TV series), a 2017 Turkish Internet TV series * Fi ''(The Legend of Zelda)'', a character in the 2011 video game ''The Legend of Zelda: Skyward Sword'' * Fi, the pitch equivalent to the fourth scale degree raised a half step, in the Solfège music education method * Films Incorporated a defunct educational movie company abbreviated to FI Businesses and organizations *Feminist Initiative (Sweden), a political party *''Finansinspektionen'', the Financial Supervisory Authority in Sweden *Forza Italia, an Italian political party *Fourth International, an international communist organisation * Franciscans International, an NGO at the United Nations * Freudenthal Institute, a research i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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