Author: Keith Brindley Ketner
Publisher:
ISBN:
Category : Formations (Geology)
Languages : en
Pages : 32
Book Description
Mid-Permian Phosphoria Sea in Nevada and the Upwelling Model
Author: Keith Brindley Ketner
Publisher:
ISBN:
Category : Formations (Geology)
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Formations (Geology)
Languages : en
Pages : 32
Book Description
Mid-Permian Phosphoria Sea in Nevada and the Upwelling Model
Author: Keith Brindley Ketner
Publisher:
ISBN:
Category : Formations (Geology)
Languages : en
Pages : 21
Book Description
"The Phosphoria Sea extended at least 500 km westward and at least 700 km southwestward from its core area centered in southeastern Idaho. Throughout that extent it displayed many characteristic features of the core: the same fauna, the same unique sedimentary assemblage including phosphate in mostly pelletal form, chert composed mainly of sponge spicules, and an association with dolomite. Phosphoria-age sediments in Nevada display ample evidence of deposition in shallow water. The chief difference between the sediments in Nevada and those of the core area is the greater admixture of sandstone and conglomerate in Nevada. Evidence of the western margin of the Phosphoria Sea where the water deepened and began to lose its essential characteristics is located in the uppermost part of the Upper Devonian to Permian Havallah sequence, which has been displaced tectonically eastward an unknown distance. The relatively deep water in which the mid-Permian part of the Havallah was deposited was a sea of probably restricted east-west width and was floored by a very thick sequence of mainly terrigenous sedimentary rocks. The phosphate content of mid-Permian strata in western exposures tends to be relatively low as a percentage, but the thickness of those strata tends to be high. The core area in and near southeastern Idaho where the concentration of phosphate is highest was separated from any possible site of upwelling oceanic waters by a great expanse of shallow sea."--Publisher's website.
Publisher:
ISBN:
Category : Formations (Geology)
Languages : en
Pages : 21
Book Description
"The Phosphoria Sea extended at least 500 km westward and at least 700 km southwestward from its core area centered in southeastern Idaho. Throughout that extent it displayed many characteristic features of the core: the same fauna, the same unique sedimentary assemblage including phosphate in mostly pelletal form, chert composed mainly of sponge spicules, and an association with dolomite. Phosphoria-age sediments in Nevada display ample evidence of deposition in shallow water. The chief difference between the sediments in Nevada and those of the core area is the greater admixture of sandstone and conglomerate in Nevada. Evidence of the western margin of the Phosphoria Sea where the water deepened and began to lose its essential characteristics is located in the uppermost part of the Upper Devonian to Permian Havallah sequence, which has been displaced tectonically eastward an unknown distance. The relatively deep water in which the mid-Permian part of the Havallah was deposited was a sea of probably restricted east-west width and was floored by a very thick sequence of mainly terrigenous sedimentary rocks. The phosphate content of mid-Permian strata in western exposures tends to be relatively low as a percentage, but the thickness of those strata tends to be high. The core area in and near southeastern Idaho where the concentration of phosphate is highest was separated from any possible site of upwelling oceanic waters by a great expanse of shallow sea."--Publisher's website.
U.S. Geological Survey Professional Paper
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 740
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 740
Book Description
Studies of the Permian Phosphoria formation and related rocks, Great Basin-Rocky Mountain region
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 42
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 42
Book Description
Life Cycle of the Phosphoria Formation
Author: J.R. Hein
Publisher: Elsevier
ISBN: 0080535488
Category : Science
Languages : en
Pages : 663
Book Description
Geological, geoenvironmental, and resource studies were completed to study a world-class phosphate ore in the Western US Phosphate Field. This integrated, multi-agency, multidisciplinary research emphasized: (1) Geological and geochemical baseline characterization of the deposit and associated rocks, (2) Delineation, assessment, and spatial analysis of phosphate resources and lands disturbed by mining, (3) Contaminant residence, reaction pathways, and environmental fate associated with the occurrence, development, and use of phosphate rock, and (4) Depositional origin and evolution of the Phosphoria Formation and deposit and geoenvironmental modeling.
Publisher: Elsevier
ISBN: 0080535488
Category : Science
Languages : en
Pages : 663
Book Description
Geological, geoenvironmental, and resource studies were completed to study a world-class phosphate ore in the Western US Phosphate Field. This integrated, multi-agency, multidisciplinary research emphasized: (1) Geological and geochemical baseline characterization of the deposit and associated rocks, (2) Delineation, assessment, and spatial analysis of phosphate resources and lands disturbed by mining, (3) Contaminant residence, reaction pathways, and environmental fate associated with the occurrence, development, and use of phosphate rock, and (4) Depositional origin and evolution of the Phosphoria Formation and deposit and geoenvironmental modeling.
Geochemistry of the Phosphoria Formation at Montpelier Canyon, Idaho
Author: David Z. Piper
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 36
Book Description
Studies of the Permian Phosphoria Formation and Related Rocks, Great Basin-Rocky Mountain Region
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 22
Book Description
Studies of the Permian Phosphoria Formation and Related Rocks, Great Basin-Rocky Mountain Region
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Studies of the Permian Phosphoria Formation and Related Rocks, Great Basin-Rocky Mountain Region
Author: Bruce R. Wardlaw
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 22
Book Description
A Mineralogical Investigation of the Permian Phosphoria Formation, Southeastern Idaho
Author: Andrew C. Knudsen
Publisher:
ISBN:
Category : Mineralogy
Languages : en
Pages : 360
Book Description
Publisher:
ISBN:
Category : Mineralogy
Languages : en
Pages : 360
Book Description