James Hein
zation
Geologist Emeritus with the USGS Pacific Coastal and Marine Science Center
Science and Products
Filter Total Items: 167
Comparison of multiple-year analyses of clay mineralogy of the Copper River system and the Gulf of Alaska Comparison of multiple-year analyses of clay mineralogy of the Copper River system and the Gulf of Alaska
No abstract available.
Authors
Gretchen Luepke, B. F. Molnia, James R. Hein
Cobalt-rich ferromanganese crusts from the Central Pacific Cobalt-rich ferromanganese crusts from the Central Pacific
Ferromanganese crusts coat most hard substrates on seamounts, ridges, and plateaus in the centralPacific basin. Crusts from less than 2500 m water depth are rich in Mn, Co, Ni, Pb, and Pt. Samples we collected from the EEl of the Hawaiian, Johnston, Palmyra, and Marshall Islands are discussed. Necker Ridge in the Hawaiian EEl has the greatest average crust thickness of 4 em. The dominant...
Authors
James R. Hein, Frank T. Manheim, William C. Schwab
Ferromanganese crusts Ferromanganese crusts
No abstract available.
Authors
Frank T. Manheim, James R. Hein
Geological and geochemical data for seamounts and associated ferromanganese crusts in the Ratak Chain, Marshall Islands Geological and geochemical data for seamounts and associated ferromanganese crusts in the Ratak Chain, Marshall Islands
In 1984, the U.S. Geological Survey (USGS) conducted a reconnaissance cruise L9-84-CP aboard the R/V S.P. LEE along the northern Ratak Ridge, Marshall Islands (Fig. 1). Preliminary geochemical results from the cruise show that ferromanganese crusts (Mn crusts) on the submarine slopes of seamounts, and islands may have potential for commercial exploitation (Schwab and others, 1985). In...
Authors
W. C. Schwab, J.R. Hein, A. S. Davis, L.A. Morgenson, C.L. Daniel, J.A. Haggerty
Ferromanganese crusts from Necker Ridge, Horizon Guyot and S.P. Lee Guyot: Geological considerations Ferromanganese crusts from Necker Ridge, Horizon Guyot and S.P. Lee Guyot: Geological considerations
Necker Ridge, Horizon Guyot and S.P. Lee Guyot in the Central Pacific were sampled, seismically surveyed, and photographed by bottom cameras in order to better understand the distribution, origin, and evolution of ferromanganese crusts. Necker Ridge is over 600 km long with a rugged crest, pods of sediment to 146 m thick, slopes that average 12° to 20°, and debris aprons that cover some...
Authors
James R. Hein, Frank T. Manheim, William C. Schwab, Alice S. Davis
Stable-isotope study of volcanogenic- and sedimentary-manganese deposits Stable-isotope study of volcanogenic- and sedimentary-manganese deposits
No abstract available.
Authors
Hsueh-Wen Yeh, J.R. Hein, R.A. Koski
Science and Products
Filter Total Items: 167
Comparison of multiple-year analyses of clay mineralogy of the Copper River system and the Gulf of Alaska Comparison of multiple-year analyses of clay mineralogy of the Copper River system and the Gulf of Alaska
No abstract available.
Authors
Gretchen Luepke, B. F. Molnia, James R. Hein
Cobalt-rich ferromanganese crusts from the Central Pacific Cobalt-rich ferromanganese crusts from the Central Pacific
Ferromanganese crusts coat most hard substrates on seamounts, ridges, and plateaus in the centralPacific basin. Crusts from less than 2500 m water depth are rich in Mn, Co, Ni, Pb, and Pt. Samples we collected from the EEl of the Hawaiian, Johnston, Palmyra, and Marshall Islands are discussed. Necker Ridge in the Hawaiian EEl has the greatest average crust thickness of 4 em. The dominant...
Authors
James R. Hein, Frank T. Manheim, William C. Schwab
Ferromanganese crusts Ferromanganese crusts
No abstract available.
Authors
Frank T. Manheim, James R. Hein
Geological and geochemical data for seamounts and associated ferromanganese crusts in the Ratak Chain, Marshall Islands Geological and geochemical data for seamounts and associated ferromanganese crusts in the Ratak Chain, Marshall Islands
In 1984, the U.S. Geological Survey (USGS) conducted a reconnaissance cruise L9-84-CP aboard the R/V S.P. LEE along the northern Ratak Ridge, Marshall Islands (Fig. 1). Preliminary geochemical results from the cruise show that ferromanganese crusts (Mn crusts) on the submarine slopes of seamounts, and islands may have potential for commercial exploitation (Schwab and others, 1985). In...
Authors
W. C. Schwab, J.R. Hein, A. S. Davis, L.A. Morgenson, C.L. Daniel, J.A. Haggerty
Ferromanganese crusts from Necker Ridge, Horizon Guyot and S.P. Lee Guyot: Geological considerations Ferromanganese crusts from Necker Ridge, Horizon Guyot and S.P. Lee Guyot: Geological considerations
Necker Ridge, Horizon Guyot and S.P. Lee Guyot in the Central Pacific were sampled, seismically surveyed, and photographed by bottom cameras in order to better understand the distribution, origin, and evolution of ferromanganese crusts. Necker Ridge is over 600 km long with a rugged crest, pods of sediment to 146 m thick, slopes that average 12° to 20°, and debris aprons that cover some...
Authors
James R. Hein, Frank T. Manheim, William C. Schwab, Alice S. Davis
Stable-isotope study of volcanogenic- and sedimentary-manganese deposits Stable-isotope study of volcanogenic- and sedimentary-manganese deposits
No abstract available.
Authors
Hsueh-Wen Yeh, J.R. Hein, R.A. Koski