Waubakee Formation

Last updated
Waubakee Formation
Stratigraphic range: Late Silurian
Є
O
S
D
C
P
T
J
K
Pg
N
Type Geological formation
UnderliesThiensville Formation
Overlies Racine Formation
Thickness18 to 33 meters (59 to 108 feet)
Lithology
Primary dolomite
Location
RegionEastern Wisconsin, at the boundary of the Wisconsin Arch and the Michigan Basin
CountryUnited States
ExtentMilwaukee, Ozaukee, and Sheboygan Counties, Wisconsin
Type section
Named for Waubeka, Wisconsin
Named byAlden (1906)

The Waubakee Formation (also referred to as the Waubakee Limestone or Waubakee Dolostone) is a unit of marine sedimentary rock found in eastern North America. Named for distinctive outcrops along the banks of the Milwaukee River near the village of Waubeka, Wisconsin, in the United States. [1] [2] The unit is composed primarily of fine-grained dolomicrite that is finely laminated and conspicuously unfossiliferous. Owing to the lack of useful index fossils, its age is not well constrained, though most scientists consider it the youngest Silurian stratigraphic unit in Wisconsin.

Sedimentary rock Rock formed by the deposition and subsequent cementation of material

Sedimentary rocks are types of rock that are formed by the accumulation or deposition of small particles and subsequent cementation of mineral or organic particles on the floor of oceans or other bodies of water at the Earth's surface. Sedimentation is the collective name for processes that cause these particles to settle in place. The particles that form a sedimentary rock are called sediment, and may be composed of geological detritus (minerals) or biological detritus. Before being deposited, the geological detritus was formed by weathering and erosion from the source area, and then transported to the place of deposition by water, wind, ice, mass movement or glaciers, which are called agents of denudation. Biological detritus was formed by bodies and parts of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies. Sedimentation may also occur as dissolved minerals precipitate from water solution.

North America Continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere

North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere; it is also considered by some to be a northern subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea.

Milwaukee River river in the United States of America

The Milwaukee River is a river in the state of Wisconsin. It is about 104 miles (167 km) long. Once a locus of industry, the river is now the center of a housing boom. New condos now crowd the downtown and harbor districts of Milwaukee attracting young professionals to the area. The river is also ribboned with parks as it winds through various neighborhoods. Kayaks and fishing boats share the river with party boats. An extensive Riverwalk featuring art displays, boat launches and restaurants lines its banks in downtown Milwaukee.

Related Research Articles

The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago (Mya), to the beginning of the Devonian Period, 419.2 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 several 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.

Watertown, Wisconsin City in Wisconsin, United States

Watertown is a city in Dodge and Jefferson counties in the U.S. state of Wisconsin. Most of the city's population is in Jefferson County. Division Street, several blocks north of downtown, marks the county line. The population of Watertown was 23,861 at the 2010 census. Of this, 15,402 were in Jefferson County, and 8,459 were in Dodge County.

South Milwaukee, Wisconsin City in Wisconsin, United States

South Milwaukee is a city in Milwaukee County, Wisconsin, United States. The population was 21,156 at the 2010 census.

Niagara Escarpment

The Niagara Escarpment is a long escarpment, or cuesta, in the United States and Canada that runs predominantly east/west from New York, through Ontario, Michigan, Wisconsin, and Illinois. The escarpment is most famous as the cliff over which the Niagara River plunges at Niagara Falls, for which it is named.

<i>Milwaukee Journal Sentinel</i> newspaper based in Milwaukee, Wisconsin

The Milwaukee Journal Sentinel is a daily morning broadsheet printed in Milwaukee, Wisconsin, where it is the primary newspaper. It is also the largest newspaper in the state of Wisconsin, where it is distributed widely. It is currently owned by the Gannett Company.

FM Consolidated line series of American locomotive models

The Consolidated line, or C-line, was a series of diesel-electric railway locomotive designs produced by Fairbanks-Morse and its Canadian licensee, the Canadian Locomotive Company. Individual locomotives in this series were commonly referred to as “C-liners”. A combined total of 165 units were produced by F-M and the CLC between 1950 and 1955.

United States District Court for the Eastern District of Wisconsin federal trial court of limited jurisdiction

The United States District Court for the Eastern District of Wisconsin is a federal trial court of limited jurisdiction. The court is under the auspices of the United States Court of Appeals for the Seventh Circuit, although patent claims and claims against the federal government under the Tucker Act are appealed to the United States Court of Appeals for the Federal Circuit. The Eastern District was established on June 30, 1870.

John W. Reynolds Jr. American judge

John Whitcome Reynolds Jr. was the 36th Governor of Wisconsin and a United States District Judge of the United States District Court for the Eastern District of Wisconsin.

Wisconsin Army National Guard

The Wisconsin Army National Guard (“Guard”) has dual state and federal roles, and is jointly funded and maintained by both governments. Its federal mission is to provide trained units to the United States Army in time of war or national emergency. Its state mission is to help civil authorities protect life and property and preserve peace, order, and public safety in times of natural or human-caused emergencies. The governor, who is the commander in chief of the Guard when it is not activated for federal service, appoints the adjutant general who directs the Wisconsin Department of Military Affairs, of which the Guard is a part. Members of the National Guard are typically part-time soldiers who attend unit drills one weekend per month and serve a two-week annual tour of active duty. All officers and enlisted personnel must meet the same physical, education, and other eligibility requirements as members of the active-duty services.

Wisconsins 4th congressional district

Wisconsin's 4th congressional district is a congressional district of the United States House of Representatives in Wisconsin, encompassing a part of Milwaukee County and including all of the city of Milwaukee and its working-class suburbs of Cudahy, St. Francis, South Milwaukee, and West Milwaukee. Recent redistricting has added the Milwaukee County North Shore communities of Glendale, Shorewood, Whitefish Bay, Fox Point, Bayside, and Brown Deer to the district. It is currently represented by Gwen Moore, a Democrat.

Wisconsins 5th congressional district

Wisconsin's 5th congressional district is a congressional district of the United States House of Representatives in Wisconsin, covering most of Milwaukee's northern and western suburbs. It presently covers all of Washington and Jefferson counties, most of Waukesha County, and portions of Dodge, Milwaukee and Walworth counties. It is currently represented by Republican Jim Sensenbrenner.

Fox Sports Wisconsin is an American regional sports network that is owned by The Walt Disney Company, and operates as an affiliate of Fox Sports Networks. Operating as the "Wisconsin" sub-feed of Fox Sports North until 2007, the channel broadcasts regional coverage of sports events throughout the state of Wisconsin, with a focus on professional sports teams based in Milwaukee. It primarily operates from a studio/office facility in downtown Milwaukee, with secondary offices and production studio/office hub based in downtown Minneapolis, Minnesota.

American System-Built Homes a set of Frank Lloyd Wright-designed homes in Milwaukee, Wisconsin

The American System-Built Homes were modest houses designed by architect Frank Lloyd Wright. They were developed between 1912 and 1916 to fulfill his interest in affordable housing. Wright was devoted to the idea of providing beautiful yet affordable homes to the public. His firm produced over 960 drawings for the project, the largest number of drawings for any project in the Wright archives. The designs were standardized, and customers could choose from seven models. Because of this standardization, the lumber could be precut at the factory, thereby cutting down on both waste and the amount of skilled labor needed for construction. The buildings are often termed prefabricated homes, but they were not, since no parts of the homes were constructed off-site. The lumber was cut at the factory, packaged along with all other components, and delivered to the work site for construction. Some are located in a federal historic district in Milwaukee, Wisconsin, and others have been designated Chicago Landmarks in Chicago, Illinois.

Soldiers Home Reef

Soldiers' Home Reef, also known as Rocky Point, National Military Asylum Reef, or Veterans' Hill is a fossilized coral reef rock formation in Milwaukee, Wisconsin. The reef formation was discovered by geologist Increase A. Lapham in the 1830s. It and other fossilized coral reefs that he discovered were the first geological reef formations described in North America, and are among the first described in the world. This reef was declared a National Historic Landmark in 1993.

Thomas A. Greene Memorial Museum

The Thomas A. Greene Memorial Museum, also known as Greene Geological Museum or Greene Museum, is a mineral and fossil museum in Milwaukee, Wisconsin administered by the Department of Geosciences at the University of Wisconsin–Milwaukee. The current curator is Dr. Stephen Q. Dornbos, a paleontologist and Associate Professor of Geosciences at UWM.

Clinton Group lithostratigraphic unit

The Clinton Group is a mapped unit of sedimentary rock found throughout eastern North America. The interval was first defined by the geologist Lardner Vanuxem, who derived the name from the village of Clinton in Oneida County, New York where several well exposed outcrops of these strata can be found. The Clinton Group and its lateral equivalents extend throughout much of the Appalachian Foreland Basin, a major structural and depositional province extending from New York to Alabama. The term has been employed in Kentucky, Maryland, Michigan, New York, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia, though in many of these areas the same interval is referred to as the Rose Hill, Rockwood, or Red Mountain Formations. Historically the term "Clinton" has also been assigned to several lower Silurian stratigraphic units in Ohio and Kentucky which are now known to be significantly older than the Clinton Group as it was originally defined. Many parts of this succession are richly fossiliferous, making the Clinton Group an important record of marine life during the early Silurian. Several economically valuable rock-types are found within this interval, though it is perhaps best known as a significant source of iron ore

Tunnel City, Wisconsin Census-designated place in Wisconsin, United States

Tunnel City is an unincorporated census-designated place in the town of Greenfield, in Monroe County, Wisconsin, United States, named after the train tunnel through a hill just to the west of town.

Truax Field Air National Guard Base

Truax Field Air National Guard Base, also known as Truax Field, is a military facility located at Dane County Regional Airport. It is located five miles (8 km) northeast of the center of Madison, a city in Dane County, Wisconsin, United States.

Paleontology in Wisconsin

Paleontology in Wisconsin refers to paleontological research occurring within or conducted by people from the U.S. state of Wisconsin. Wisconsin has a relatively sparse fossil record. Fossils found in Wisconsin are generally very old, most ranging from 500 to 300 million years in age. During the early part of the Paleozoic era, Wisconsin was covered by a warm, shallow sea that would be home to creatures like brachiopods, bryozoans, cephalopods, corals, crinoids, and trilobites. During the Silurian, Wisconsin was home to massive reef system that formed one of the most biodiverse habitats in all of North America at the time. The interval spanning the Permian, Mesozoic, Paleogene and Neogene are missing from the local rock record. During the Ice Age the local climate became cold. Seals, walruses, and whales left behind fossil remains in the state near the Great Lakes. On land, hemlock and spruce trees formed forests inhabited by creatures like giant beavers, horses, and woolly mammoths. The first fossil reef systems ever scientifically documented in North America were discovered in the area around Milwaukee. The Silurian reefs of the Milwaukee area were also the first known fossil reefs from the Paleozoic era. Their associated fauna is one of the most diverse from the period ever documented in North America. The Ordovician to Silurian trilobite Calymene celebra is the Wisconsin state fossil.

The Byron Formation is a geologic formation in Michigan and Wisconsin. It preserves fossils dating back to the Silurian period.

References

  1. Alden, W. C. (1906). "Description of the Milwaukee Quadrangle, Wisconsin". U. S. Geological Survey Atlas, Milwaukee Folio. 140: 1–12.
  2. Rovey, C. W. (1997). "Proposed Reference Sections and Correlation of Upper Silurian and Devonian Strata, Eastern Wisconsin" (PDF). Geoscience Wisconsin. 16: 37–46.