Author: Kendell A. Dickinson
Publisher:
ISBN:
Category : Diagenesis
Languages : en
Pages : 20
Book Description
he Lower Tertiary Kootznahoo Formation, a clastic unit, crops out in scattered areas in the Admiralty Trough, southeastern Alaska. The formation consists mainly of arkosic sandstone, conglomerate, and lesser amounts of coal and shale. Samples were collected and outcrops described from three main outcrop localities in an area beginning in the Kootznahoo Inlet area on the west-central side of Admiralty Island and extending southward to the Keku Strait area between Kuiu and Kupreanof Islands. X-ray diffraction, optical mineralogy, scanning electron micrographs, and stable isotope and other chemical analyses were utilized during sample studies. Three stagtts of diagenesis were recognized. Stage I occurred under the conditions of nonmarine fluvial and paludal deposition and was characterized by development of sideritic concretions and cement. Stage II was characterized by local uplift of the formation and the entrance of oxygenated meteoric ground water, which resulted primarily in kaolinization. Stage Ill was characterized by the deposition of calcite and dolomite apparently in response to subsidence and the invasion of the unit by ground water of marine origin. Uranium mineralization associated with carbonaceous material has been found only where diagenesis to stage II has occurred. Scattered carbonized wood fragments enriched to as much ·as 0.2% uranium were found in a sandstone bed in the Kootznahoo Formation near Kadake Bay on Kuiu Island. The source of the uranium appears to be a heavy-mineral zone within the sandstone. Parts of the Kootznahoo where stage II diagenesis has occurred are favorable uranium exploration targets, but exposures are poor and the probability of finding commercial size deposits is low.
Diagenesis and Uranium Mineralization of the Lower Tertiary Kootznahoo Formation in the Northern Part of Admiralty Trough, Southeastern Alaska
Author: Kendell A. Dickinson
Publisher:
ISBN:
Category : Diagenesis
Languages : en
Pages : 20
Book Description
he Lower Tertiary Kootznahoo Formation, a clastic unit, crops out in scattered areas in the Admiralty Trough, southeastern Alaska. The formation consists mainly of arkosic sandstone, conglomerate, and lesser amounts of coal and shale. Samples were collected and outcrops described from three main outcrop localities in an area beginning in the Kootznahoo Inlet area on the west-central side of Admiralty Island and extending southward to the Keku Strait area between Kuiu and Kupreanof Islands. X-ray diffraction, optical mineralogy, scanning electron micrographs, and stable isotope and other chemical analyses were utilized during sample studies. Three stagtts of diagenesis were recognized. Stage I occurred under the conditions of nonmarine fluvial and paludal deposition and was characterized by development of sideritic concretions and cement. Stage II was characterized by local uplift of the formation and the entrance of oxygenated meteoric ground water, which resulted primarily in kaolinization. Stage Ill was characterized by the deposition of calcite and dolomite apparently in response to subsidence and the invasion of the unit by ground water of marine origin. Uranium mineralization associated with carbonaceous material has been found only where diagenesis to stage II has occurred. Scattered carbonized wood fragments enriched to as much ·as 0.2% uranium were found in a sandstone bed in the Kootznahoo Formation near Kadake Bay on Kuiu Island. The source of the uranium appears to be a heavy-mineral zone within the sandstone. Parts of the Kootznahoo where stage II diagenesis has occurred are favorable uranium exploration targets, but exposures are poor and the probability of finding commercial size deposits is low.
Publisher:
ISBN:
Category : Diagenesis
Languages : en
Pages : 20
Book Description
he Lower Tertiary Kootznahoo Formation, a clastic unit, crops out in scattered areas in the Admiralty Trough, southeastern Alaska. The formation consists mainly of arkosic sandstone, conglomerate, and lesser amounts of coal and shale. Samples were collected and outcrops described from three main outcrop localities in an area beginning in the Kootznahoo Inlet area on the west-central side of Admiralty Island and extending southward to the Keku Strait area between Kuiu and Kupreanof Islands. X-ray diffraction, optical mineralogy, scanning electron micrographs, and stable isotope and other chemical analyses were utilized during sample studies. Three stagtts of diagenesis were recognized. Stage I occurred under the conditions of nonmarine fluvial and paludal deposition and was characterized by development of sideritic concretions and cement. Stage II was characterized by local uplift of the formation and the entrance of oxygenated meteoric ground water, which resulted primarily in kaolinization. Stage Ill was characterized by the deposition of calcite and dolomite apparently in response to subsidence and the invasion of the unit by ground water of marine origin. Uranium mineralization associated with carbonaceous material has been found only where diagenesis to stage II has occurred. Scattered carbonized wood fragments enriched to as much ·as 0.2% uranium were found in a sandstone bed in the Kootznahoo Formation near Kadake Bay on Kuiu Island. The source of the uranium appears to be a heavy-mineral zone within the sandstone. Parts of the Kootznahoo where stage II diagenesis has occurred are favorable uranium exploration targets, but exposures are poor and the probability of finding commercial size deposits is low.
Diagenesis and Uranium Mineralization of the Lower Tertiary Kootznahoo Formation in the Northern Part of Admirality Trough, Southeastern Alaska
Author: Kendell A. Dickinson
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Diagenesis and Uranium Mineralization of the Lower Tertiary Kootznahoo Formation in the Northern Part of Admiralty Trough, Southeastern Alaska
Author: Kendell A. Dickinson
Publisher:
ISBN:
Category : Diagenesis
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category : Diagenesis
Languages : en
Pages : 12
Book Description
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 712
Book Description
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 712
Book Description
Monthly Catalogue, United States Public Documents
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1432
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1432
Book Description
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1224
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1224
Book Description
U.S. Geological Survey Bulletin
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 450
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 450
Book Description
U.S. Geological Survey Bulletin
Author: Bonnie L. Crysdale
Publisher:
ISBN:
Category : Building stones
Languages : en
Pages : 862
Book Description
Publisher:
ISBN:
Category : Building stones
Languages : en
Pages : 862
Book Description
The Potential for Uranium Deposits in the Tertiary Kootznahoo Formation of the Southern Part of the Admiralty Trough, Southeastern Alaska
Author: Kendell A. Dickinson
Publisher:
ISBN:
Category : Uranium ores
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Uranium ores
Languages : en
Pages : 36
Book Description
Bibliography of Agriculture
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1254
Book Description
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1254
Book Description