Geologic formation of the Williston Basin and Western Canada Sedimentary Basin
Deadwood Formation
Stratigraphic range: Late Cambrian-Early Ordovician ~510–470 Ma
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The Deadwood Formation at Fallingrock cliff in Dark Canyon in the Black Hills, South Dakota.
Type
Formation
Underlies
Red River, Winnipeg & Englewood Formations & Elk Point Group
Overlies
Precambrian rocks, or Lebold Formations Earlie and Pika Formations
Lithology
Primary
Sandstone
Other
Conglomerate, shale, limestone
Location
Region
Williston Basin and Western Canada Sedimentary Basin
Country
United States Canada
Type section
Named for
Deadwood, South Dakota
Named by
Darton, N.H. and Paige, S. (1925)[1]
The Deadwood Formation is a geologic formation of the Williston Basin and Western Canada Sedimentary Basin. It is present in parts of North and South Dakota and Montana in the United States, and in parts of Alberta, Saskatchewan, and southwestern corner of Manitoba in Canada. It is of Late Cambrian to Early Ordovician age and was named for exposures in Whitewood Creek near Deadwood, South Dakota.[2] It is a significant aquifer in some areas, and its conglomerates yielded significant quantities of gold in the Black Hills of South Dakota.[3]
It preserves trace fossils such as Skolithos, and remains of Late Cambrian trilobites and brachiopods,[4] as well as Ordovician fossils.
A 20 MW geothermal power plant is under construction, drilling 3.5 kilometers down.[5]
^Darton, N.H. and Paige, S. (1925). Description of the central Black Hills. U.S. Geological Survey, Professional Paper 65.
^Glass, D.J. (editor) 1997. Lexicon of Canadian Stratigraphy, vol. 4, Western Canada including eastern British Columbia, Alberta, Saskatchewan and southern Manitoba. Canadian Society of Petroleum Geologists, Calgary, 1423 p. on CD-ROM. ISBN 0-920230-23-7.
^Irving, J.D., Emmons, S.F. and Jaggar, T.A. (1904). Ore deposits in Cambrian rocks: Gold-bearing conglomerates. Part 2, Chapter 2, p. 98-11, in U.S. Geological Survey, Professional Paper 26. Retrieved 2014-10-04.{{cite book}}: CS1 maint: multiple names: authors list (link)
^J. Foster, 2014. Cambrian ocean world: Ancient sea life of North America. Indiana University Press, 432 p., ISBN 0253011884, 9780253011886
^"First DEEP Geothermal Well In Saskatchewan Exceeds Expectations". CleanTechnica. 19 September 2020.
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The DeadwoodFormation is a geologic formation of the Williston Basin and Western Canada Sedimentary Basin. It is present in parts of North and South Dakota...
rock called the DeadwoodFormation is mostly sandstone and was the source of gold found in the Deadwood area. Above the DeadwoodFormation lies the Englewood...
Eolorica is a fossilized loriciferan from the mid-Cambrian DeadwoodFormation of Saskatchewan, Canada, preserved as a Small Carbonaceous Fossil. Harvey...
shales. The Upper Cambrian DeadwoodFormation was transgressively deposited on the low-relief Precambrian surface. The Deadwood is characterized by shallow...
River Formation is slightly unconformably overlain by the Stony Mountain Formation and sharply overlays the Winnipeg Formation in Manitoba, the Deadwood Formation...
that area. It is overlain by the Pika Formation or, in areas where the Pika is not present, by the DeadwoodFormation. It thickens to the west where it grades...
unconformably overlain by the Sullivan Formation or, farther east, by the DeadwoodFormation. Glass, D.J. (editor) 1997. Lexicon of Canadian Stratigraphy, vol...
Rabbitkettle Formation, southern Mackenzie Mountains, northwest Canada) and the United States (Dresbachian, Crepicephalus trilobite zone, DeadwoodFormation, Whitewood...
Group/Niobrara Formation Cretaceous DeadwoodFormation Cambrian Fort Randall Formation Neogene Fort Union Formation Paleogene Fox Hills Formation Cretaceous...
the Sauk Sequence. The sequence contains only one major unit—the DeadwoodFormation. The area of the Nesson Anticline and some hills eroded out of the...
The Bakken Formation (/ˈbɑːkən/ BAH-kən) is a rock unit from the Late Devonian to Early Mississippian age occupying about 200,000 square miles (520,000 km2)...
Coosella zone, Riley Formation, Central Texas, 30.3° N, 97.7° W; and Crepicephalus trilobite zone, lower Member of the DeadwoodFormation, Whitewood Creek...
often considered for deadwood removal. Another reason for deadwooding is amenity value, i.e. a tree with a large amount of deadwood throughout the crown...
Forsaken (2001). Miko has also had recurring roles on the television series Deadwood, The Cape, and Chicago Fire, in addition to roles in dance films such as...
been subdivided into numerous formations, number of which host major petroleum and natural gas reservoirs. The formations of the Elk Point Group are composed...
17 December 2021. Alberta Geological Survey, 2015. "Alberta Table of Formations; Alberta Energy Regulator". Retrieved 26 June 2014.{{cite web}}: CS1 maint:...
phosphatic tubes of Sphenothallus from the Early Ordovician Fenxiang Formation (China), as well as the Silurian and Early Devonian of Podolia (Ukraine)...
marine and transitional environment. Oil is produced from the Sawtooth Formation in southeastern Alberta. The Ellis Group laterally occurs in the subsurface...
(520 m), the group is subdivided into the Mission Canyon Formation and Lodgepole Formation. Equivalents of the Madison are named the Pahasapa Limestone...
from the McMurray Formation at the Athabasca Oil Sands. Heavy Oil is produced from the Wabiskaw Member of the Clearwater Formation in the Wabasca oil...
The Bearpaw Formation, also called the Bearpaw Shale, is a geologic formation of Late Cretaceous (Campanian) age. It outcrops in the U.S. state of Montana...
far apart. Deadwood Fallen pins lying in the gutter, or on the lane either touching, or to the bowler's side of the Deadwood Line. Deadwood on the lane...
top to base: Heath Formation: black shale with sandstone lenses. Otter Formation: limestone and grey to green shale Kibbey Formation: shaly sandstone The...
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