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ⓘ Platteville Limestone is the Ordovician limestone formation in the sedimentary sequence characteristic of the upper Midwestern United States. It is characterize ..



Platteville Limestone
                                     

ⓘ Platteville Limestone

Platteville Limestone is the Ordovician limestone formation in the sedimentary sequence characteristic of the upper Midwestern United States. It is characterized by its gray color, rough texture, and numerous fossils. Its type locality is Platteville, Wisconsin. It was heavily used in the early decades of the building of Minneapolis–Saint Paul and Faribault, Minnesota.

                                     

1. Formation

Like almost all limestones, the Platteville variety is a marine creation. Platteville Limestone formed between 488 and 436 million years ago, when what became southeastern Minnesota and southwestern Wisconsin lay beneath an ancient sea. This sea was heavily populated by shellfish and other invertebrates. As they died, their shells and other hard parts, made of calcium carbonate, fell to the ocean floor. Over the centuries, the weight of these deposits crushed the shell fragments and compressed them into stone.

It overlies the thin Glenwood Shale, which overlies the thick St. Peter Sandstone. It is shot through with dolomitic mottles in an anastomose pattern; this dolotimization occurred after deposition but prior to the development of joints in the rock.

About 100 million years later, geologic forces raised southeastern Minnesota above the ocean surface. In the area that became Twin Cities metropolitan region, the limestone was covered by thin deposits of shale and soil. Glaciers covered this region from 75.000 to about 12.000 years ago. When they finally melted, between 14.000 and 12.000 years ago, the released water carved the channels of the Mississippi, Minnesota, and smaller rivers through the layers of limestone, exposing some of it.

This difficult-to-erode unit forms the cap of Saint Anthony Falls, Minnehaha Falls, and the Mississippi River bluffs in most of the Twin Cities area. Sea life was abundant during the Ordovician Period and a large number of marine fossils including corals, bryozoans, brachiopods, clams, snails, cephalopods, and trilobites can be found in the limestone sediments at several areas along the Mississippi River in the Twin Cities.

                                     

2. Use

When the United States Army began work on Fort Snelling in 1820, Platteville Limestone was abundant and nearby. The fort site lay atop a great deposit of the material. It is an easy stone to quarry, as it breaks readily. Soldiers built almost the entire original fort, from foundations to the round tower, out of Platteville stone. It remains the largest complex of Platteville structures ever made.

Like Fort Snelling, downtown Saint Paul was built atop a Platteville shelf. Once the city moved beyond its early stage of flimsy and flammable wooden buildings, the local limestone came into heavy use. The first quarry went into operation in 1856. The Original Coney Island 1858, the Alexander Ramsey House 1868, and Church of the Assumption 1874 were all built partly or entirely from the local stone. Several fine examples of Platteville limestones use in private houses can be found in Saint Pauls Summit Hill district, including the Burbank–Livingston–Griggs House 1862.

The Platteville stone was quarried and used also in Minneapolis, though less of it survived there into the 21st century. Quarrying began in 1864 and builders used it for the original Customs House and City Hall both 1873 and the original Central High School 1878. The most conspicuous survivor is the ruin of the Pillsbury A-Mill, built in 1881; its walls all Platteville stone quarried on site.

Outside of the Twin Cities, Carleton Colleges first permanent building, Willis Hall 1872, was built of Platteville stone quarried at Dundas, Minnesota. In Faribault, the Cathedral of Our Merciful Saviour and Bethlehem Academy and the most of the main buildings of Shattuck-Saint Marys were also made of Platteville. The stone in this area tends to be a paler gray, often stained with light brown patches.

As a building stone, Plattevilles chief attraction was its availability; in Saint Paul and Minneapolis it was often simply quarried on site. But it had limits. Coarse and crumbly, it could not be carved or polished to a smooth finish, and its gray color had limited appeal. With the spread of railroads in the 1870s, other, finer materials became available and affordable, including the red Lake Superior Sandstone and the buff-colored Kasota limestone that were more attractive and easier to work with. Builders rarely used Platteville for major projects after the 1880s.

                                     
  • Decorah, and Platteville formations. The platteville limestone is one of the formations of the Sinnipee Group. It is primarily made of limestone It lies
  • Wisconsin Platteville It is the principal city of the Platteville Micropolitan Statistical area, which has an estimated population of 49, 681. Platteville was
  • characteristic of the upper Midwestern United States. It lies under the Platteville Limestone and above the Saint Peter Sandstone. Together, these three units
  • lowermost formation in the Galena Group. The Decorah lies above the Platteville Limestone and below the Cummingsville Formation in the sedimentary sequence
  • the plans, while Lester Bancroft did the masonry. The stone was Platteville Limestone quarried from a farm north of Cannon Falls. Bishop Henry Benjamin
  • feet 5.5 m and a width of 40.4 feet 12.3 m It is faced with Platteville limestone The area was originally part of the George W. Baird farm, but in
  • 5 m thick layer of shale, under a 35 foot 11 m thick layer of Platteville limestone These layers were the result of an Ordovician Period sea which
  • The Galena Group or Galena Limestone refers to a sedimentary sequence of Ordovician limestone that was deposited atop the Decorah Shale. It is part of
  • layer of Glenwood Shale, which lies below a much thicker layer of Platteville limestone Examples can be seen at Minnehaha Falls in Minneapolis, the bluffs
  • written using whitewashed stones on Platte Mound about four miles east of Platteville Wisconsin. It is the largest hillside letter M in the world. The letter
  • 5 m thick layer of shale, under a 35 foot 11 m thick layer of Platteville limestone These layers were the result of an Ordovician Period sea which
  • quoins decorate the exterior corners. The quoins are large blocks of Platteville limestone The house is on a foundation of Galena Dolomite. Chimneys are found
  • Historic stone bridge and wall structures Natural wading pool area Platteville Limestone bluffs Sandy beachhead Wildlife The hiking loop trail is entirely


                                     
  • The Platteville Limestone formation, deposited almost 500 million years ago during the Ordovician Period, forms the bedrock of the park. The limestone is
  • Scientific and Natural Area. Along with Kasota limestone St. Cloud granite, and Platteville Limestone Morton Gneiss is one of Minnesota s chief contributions
  • however standing at the upper falls, one is standing directly on the Platteville Limestone Formation laid down during the Ordovician Period of the Paleozoic
  • The Mitchell - Rountree House is located in Platteville Wisconsin. It is an early 1.5 - story cottage built of carefully fit dolomite for Rev. Samuel Mitchell
  • mining boomtowns sprang up in the region, including Galena, Illinois Platteville Wisconsin and Mineral Point, the location of Pendarvis. During the
  • measuring 175 feet 53 m by 115 feet 35 m The foundations are of Platteville limestone The exterior wall thickness varies from 8 - 0 2.4 m thick at
  • Grant County. The largest communities within the combined watersheds are Platteville Dickeyville, Potosi, Montfort, and Livingston. Dickeyville sits on the
  • formation of the area consisted of a hard, thin layer of Platteville Formation, a limestone overlaying the soft St. Peter Sandstone sub - surface. These
  • be viewed by clicking the number. Agriculture and Manual Arts Bldg Platteville St. Normal Sch Wisconsin Historical Society. Retrieved 2016 - 05 - 14.
  • In 1975 - 1976, he was a visiting artist at the University of Wisconsin - Platteville It was during this time, in early 1976, that the University of Iowa
                                     
  • quarry operations have extracted the upper Ordovician carbonates of the Platteville and Galena Prairie due Chien groups along the northern edge since 1906
  • Formation Period Notes Black River Group Platteville Formation Ordovician Black River Group Platteville Limestone Ordovician Brandon Bridge Formation Silurian
  • Atkinson Formation, which has been informally called the Middle or Divine Limestone by drillers. The Fort Atkinson is a dominantly a red, gray, and white
  • facilities in Illinois. The park had nine extant wells tapping the Galena Platteville Aquifer when the state purchased the property. By 1973 a modern well
  • Buildings and with the preservation of the Mitchell - Rountree House in Platteville Wisconsin in 1959. Perrin published a guide book in 1960 titled Historic
  • back to the Devonian period. The formation is composed of dolomite and limestone with many fossils and vugs in the lower part, while the upper part contains
  • Formation Period Notes Altamont Formation Carboniferous Platteville Limestone Ordovician St. Louis Limestone Carboniferous Brainard Formation Ordovician Carbondale

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Geology of the Gorge Friends of the Mississippi River.

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The Development of a Diplograptid from the Platteville Limestone. Walker, Margaret. Abstract. Publication: Geological Magazine. Pub Date: February 1953 DOI:. Platteville Limestone Concrete Wall Stamps Small. People also search for. Historic Stone Company Minnesota Historical Society. Platteville. Limestone, 454 455. Million Years Old. Glenwood Shale, 455. Million Years Old. St. Peter Sandstone. 455 458 Million. Years Old. Category:Platteville Limestone media Commons. Henderson, D.M. and Rhodes, F.H.T. Dolomitization of the Platteville Limestone 048 26 print. Posted in 1955, Transactions Tagged Dolomitization of the.


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The Development of a Diplograptid from the Platteville Limestone.

The Platteville Limestone is massive and blocky. It tends to crack along bedding planes as well as fracture perpenicular to the bedding planes. Cracking along. Stratigraphy of the Decorah Formation The University of Chicago. Blocks of Platteville limestone on eroded surface of St. Peter sandstone left in this position at foot of receding falls of river Warren. Exposed in railroad cut west of. 7. Mississippi River Gorge Landslides Hennepin County. Current inventory: Platteville limestone, Lake Superior sandstone aka Bayfield brownstone, Kettle River sandstone,Indiana limestone ornately carved.





Well and boring record 203187 Minnesota Well Index.

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The Platteville Limestone is the Ordovician limestone formation in the sedimentary sequence characteristic of the upper Midwestern United States. It is characterized by its gray color, rough texture, and numerous fossils. Its type locality is. Geology of quarry products. The foundation of the structure was constructed on the lowermost Platteville limestone and Glenwood shale and is tile drained to the nearby river gorge. Most of. Dolomitic Mottling in the Platteville Limestone AAPG Datapages. Platteville limestone is a distinctive building stone of southeastern Minnesota and southwestern Wisconsin characterized by its gray color,. English Country in Northome Murphy & Co Design. Reclaimed Stone as well as Platteville Limestone was used to create these spectacular drystone retaining walls. Drystone requires no mortar therefore the.


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