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Kuna Formation

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Journal Article
Journal: Economic Geology
Published: 01 August 2015
Economic Geology (2015) 110 (5): 1143–1156.
...Craig A. Johnson; Julie A. Dumoulin; Robert A. Burruss; John F. Slack Abstract Water column redox conditions, degree of restriction of the depositional basin, and other paleoenvironmental parameters have been determined for the Mississippian Kuna Formation of northwestern Alaska from stratigraphic...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1385–1414.
... Lisburne Group (Kuna Formation, unnamed drowned shelf facies), and the Pennsylvanian-Permian Siksikpuk Formation. Major base metal sulfide deposits of the region are present only in the Kuna Formation, which in the Red Dog district comprises siliceous black shale and black chert, minor limestone...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1355–1384.
...Julie A. Dumoulin; Anita G. Harris; Charles D. Blome; Lorne E. Young Abstract The Kuna Formation (Lisburne Group) in northwest Alaska hosts the Red Dog and other Zn-Pb-Ag massive sulfide deposits in the Red Dog district. New studies of the sedimentology and paleontology of the Lisburne Group...
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Image
—<b>Kuna</b> <b>Formation</b> and Etivluk Group in fenster at headwaters of <b>Kuna</b> River. K...
Published: 01 March 1982
FIG. 3 —Kuna Formation and Etivluk Group in fenster at headwaters of Kuna River. Kuna Formation (ℙMk) is depositionally overlain by Siksikpuk Formation ( R ¯ Ps ) , Otuk Formation ( J R ¯ 0 ) , and undifferentiated Cretaceous rocks (Ku). High ridges are formed
Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1533–1553.
... sulfide and barite deposits in the western and central Brooks Range. The Red Dog deposits and other shale-hosted Zn-Pb-Ag deposits near Red Dog are hosted in the Mississippian Kuna Formation, which is underlain by a sequence of marine-deltaic clastic rocks of the Upper Devonian to Lower Mississippian...
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Image
—Diagrammatic columnar section of <b>Kuna</b> <b>Formation</b> at its type locality. Alth...
Published: 01 March 1982
FIG. 4 —Diagrammatic columnar section of Kuna Formation at its type locality. Although incomplete, this section contains all major sedimentary facies recognized regionally in Kuna. In this area, formation is underlain by Kayak Shale and intervening 10-m unit of light-gray limestone of Lisburne
Image
—Typical outcrop of <b>Kuna</b> <b>Formation</b>. Resistant light-gray-weathering beds ar...
Published: 01 March 1982
FIG. 5 —Typical outcrop of Kuna Formation. Resistant light-gray-weathering beds are black bedded chert overlying black carbonaceous shale.
Image
—Eastward view of north-dipping Kayak Shale (Mk), <b>Kuna</b> <b>Formation</b> (PAAk), Si...
Published: 01 March 1982
FIG. 6 —Eastward view of north-dipping Kayak Shale (Mk), Kuna Formation (PAAk), Siksikpuk Formation ( R ¯ Ps ) , and Otuk Formation ( J R ¯ 0 ) along upper Otuk Creek at Endicott Mountain front. Late Devonian Kanayut Conglomerate (Dk) forms Endicott Mountains
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1982
AAPG Bulletin (1982) 66 (3): 348–362.
...FIG. 3 —Kuna Formation and Etivluk Group in fenster at headwaters of Kuna River. Kuna Formation (ℙMk) is depositionally overlain by Siksikpuk Formation ( R ¯ Ps ) , Otuk Formation ( J R ¯ 0 ) , and undifferentiated Cretaceous rocks (Ku). High ridges are formed...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1481–1508.
...-Pb-Ag sulfide intervals at Anarraaq but are not as widely dispersed. Net chemical changes for altered wall rocks in the district, on the basis of average Al-normalized data relative to unaltered black shales of the host Kuna Formation, include large enrichments (>50%) of Fe, Ba, Eu, V, S, Co, Zn...
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Journal Article
Journal: Economic Geology
Published: 01 November 1986
Economic Geology (1986) 81 (7): 1696–1727.
... of coeval units distinguish the allochthons. The two uppermost allochthons contain Jurassic or older mafic and ultramafic igneous sequences.The Red Dog deposit occurs in the second lowest allochthon, in black siliceous shale and chert of the Mississippian to Pennsylvanian Kuna Formation. A distinctive...
Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1323–1343.
..., and lesser chert and carbonate turbidites of the Kuna Formation (e.g., Red Dog, Anarraaq, Lik (Su), and Drenchwater). The vein-breccia occurrences (e.g., Husky, Story Creek, West Kivliktort Mountain, Vidlee, and Kady) are hosted by a deformed but only weakly metamorphosed package of Upper Devonian to Lower...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1449–1480.
..., and carbonate rocks of the Carboniferous Kuna Formation. The giant Red Dog shale-hosted deposits consist of a cluster of four orebodies (Main, Qanaiyaq, Aqqaluk, and Paalaaq) that lie within distinct thrust panels that offset a single ore deposit during the Mesozoic Brookian orogeny. These Zn-Pb-Ag-barite...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1281–1306.
... commonly is present in black shale and carbonate turbidites of the Mississippian Kuna Formation. The reconstructed Kuna basin is a 200 by +600 km feature that represents the culmination of a remarkable chain of events that includes three fluvial-deltaic and two or more orogenic cycles, Middle Devonian...
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Journal Article
Journal: Economic Geology
Published: 01 May 2015
Economic Geology (2015) 110 (3): 653–675.
... values of 0.24 to 0.88 for four samples of metalliferous black shale. A proxy for the ratio of coeval early Chesterian seawater is provided by initial ( 187 Os/ 188 Os) 335 Ma ratios of four unaltered black shales of the coeval Kuna Formation that average 1.08, nearly identical to the initial ratio...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1509–1532.
...K. D. Kelley; D. L. Leach; C. A. Johnson; J. L. Clark; M. Fayek; J. F. Slack; V. M. Anderson; R. A. Ayuso; W. I. Ridley Abstract The Red Dog Zn-Pb deposits are hosted in organic-rich mudstone and shale of the Mississippian Kuna Formation. A complex mineralization history is defined by four...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1435–1448.
... that are widespread in black chert at the top of the Kuna Formation may represent seeps that supported neither authigenic mineral formation nor chemosynthetic megafauna. Samples were obtained from drill core and surface or open pit exposures. Some were coarse enough that barite could be separated to> 98...
FIGURES
Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1307–1322.
.... This compilation is supplemented by new 40 Ar/ 39 Ar dates of white mica from the Anarraaq and Red Dog Zn-Pb-Ag (+ barite) deposits from the western Brooks Range. The deposits are hosted in black shale and carbonate rocks of the Late Mississippian-Early Pennsylvanian Kuna Formation. Quartz-pyrite-white mica grains...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1577–1591.
... Ag. The barite and sulfide minerals are hosted by the uppermost part of the Mississippian Kuna Formation (Ikalukrok unit) that consists of carbonaceous and siliceous mudstone or shale interbedded with carbonate. The amount of interbedded carbonate in the Anarraaq deposit is atypical of the district...
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Journal Article
Published: 03 April 2000
Canadian Journal of Earth Sciences (2000) 37 (4): 549–567.
...? harbledownense Assemblage (upper Sinemurian), 191.5 ± 0.8 Ma from the Plesechioceras? harbledownense Assemblage (upper Sinemurian) to the Whiteavesi Zone (lower Pliensbachian), Ma from the Freboldi Zone (lower Pliensbachian), 184.7 ± 0.9 Ma from the Kunae Zone (upper Pliensbachian), Ma from the Kanense...
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