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James Hein

zation

Geologist Emeritus with the USGS Pacific Coastal and Marine Science Center

Science and Products

Collage of black nodules or rocks of varying sizes and shapes, each 1-7 inches wide, broken in half to show their cores.

Global Seabed Mineral Resources

The Global Marine Mineral Resources project studies deep ocean minerals that occur within the U.S. Exclusive Economic Zone and areas beyond national jurisdictions. Our research concerns the setting, genesis, and metal enrichment processes of mineral occurrences, the relationship between marine minerals and deep-sea biota, and the potential geochemical footprint of any seafloor mining. We aim to...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, Deep Sea Exploration, Mapping and Characterization
Global Seabed Mineral Resources

Global Seabed Mineral Resources

The Global Marine Mineral Resources project studies deep ocean minerals that occur within the U.S. Exclusive Economic Zone and areas beyond national jurisdictions. Our research concerns the setting, genesis, and metal enrichment processes of mineral occurrences, the relationship between marine minerals and deep-sea biota, and the potential geochemical footprint of any seafloor mining. We aim to...
Learn More

Geochemistry and x-ray diffraction data for hydrothermal manganese oxide rocks from the Samoa hotspot region in the South Pacific Ocean collected during research expedition KM0506 Geochemistry and x-ray diffraction data for hydrothermal manganese oxide rocks from the Samoa hotspot region in the South Pacific Ocean collected during research expedition KM0506

Hydrothermal manganese oxide rocks were collected via dredge from the Tulaga Seamount, the flank of Ofu Island, and from Soso seamount in the Samoa hotspot region offshore American Samoa during the KM0506 cruise aboard the R/V Kilo Moana in April of 2005. Rocks were subsampled at USGS and analyzed for mineralogy by x-ray diffraction as well as sent to SGS laboratories, Canada for major...
By
Pacific Coastal and Marine Science Center

Global ferromanganese crust and abyssal ferromanganese nodule prospective occurrence regions Global ferromanganese crust and abyssal ferromanganese nodule prospective occurrence regions

This data release is a polygon shapefile representing prospective occurrence regions of ferromanganese crusts and abyssal ferromanganese nodules on the seafloor throughout the global oceans. Polygons represent areas where oceanographic criteria, such as low sedimentation rate and moderate primary productivity, overlap with geologic criteria, including regions with appropriate seafloor...
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center

Geochemistry of ferromanganese crusts, nodules, and hydrothermally altered rocks from the Arctic Ocean Geochemistry of ferromanganese crusts, nodules, and hydrothermally altered rocks from the Arctic Ocean

Ferromanganese crusts, nodules, and hydrothermally altered rocks were collected via dredge within the Amerasia Basin in the Arctic Ocean during USCGC icebreaker Healy cruises HLY0805, HLY0905, and HLY1202 in 2008, 2009, and 2012 respectively. Dredged samples were donated and sent to USGS for subsampling and major and trace element geochemical analyses. Major and trace element data as...
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center

Measurements of zinc, oxygen, and pH, from sphalerite and ZnS oxidation in seawater Measurements of zinc, oxygen, and pH, from sphalerite and ZnS oxidation in seawater

This data release presents the concentration of zinc, oxygen, pH, temperature, and the time point at which measurements were taken for experimental oxidation work regarding zinc and copper sulfide minerals. These data accompany the following publication: Gartman, A., Whisman, S.P., and Hein, J.R., 2020, Interactive oxidation of sphalerite and covellite in seawater: implications for...
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center

Sorbed-water (H2O-) corrected chemistry for ferromanganese crust samples from the western equatorial Pacific Ocean Sorbed-water (H2O-) corrected chemistry for ferromanganese crust samples from the western equatorial Pacific Ocean

Ferromanganese crust samples were collected via dredge during four oceanographic research cruises to the western equatorial Pacific Ocean. The location (latitude, longitude, depth) and concentrations of 27 major and trace elements in the most recent growth layers of ferromanganese crusts from 57 dredge sites are presented here, as well as select seawater chemistry at each location. These...
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center
No results found.
Filter Total Items: 168

Climate and ocean dynamics and the lead isotopic records in Pacific ferromanganese crusts Climate and ocean dynamics and the lead isotopic records in Pacific ferromanganese crusts

As hydrogenous iron-manganese crusts grow, at rates of millimeters per million years, they record changes in the lead isotopic composition of ambient seawater. Time-resolved lead isotopic data for cut slabs of two central Pacific iron-manganese crusts that have been growing since about 50 million years ago were measured in situ by laser ablation, multiple-collector, inductively coupled...
Authors
John N. Christensen, Alex N. Halliday, Linda V. Godfrey, James R. Hein, David K. Rea
By
Pacific Coastal and Marine Science Center

The Hf isotopic composition of ferromanganese nodules and crusts and hydrothermal manganese deposits: Implications for seawater Hf The Hf isotopic composition of ferromanganese nodules and crusts and hydrothermal manganese deposits: Implications for seawater Hf

We present Hf and Pb isotopic data, and chemical compositions of the outermost layers of marine ferromanganese deposits of different types (hydrogenous and hydrothermal) with a worldwide distribution. The Hf isotopic compositions display a broad range and refine previously reported regional differences as follows: Atlantic Ocean ɛHf = −4to+2, Indian Ocean ɛHf = +2to+4, Pacific Ocean ɛHf...
Authors
L. V. Godfrey, D.-C. Lee, W. F. Sangrey, A. N. Halliday, V. J. M. Salters, James R. Hein, W. M. White

Mineralogy and stable isotopes of black shale-hosted manganese ores, Southwestern Taurides, Turkey Mineralogy and stable isotopes of black shale-hosted manganese ores, Southwestern Taurides, Turkey

No abstract available.
Authors
H. Ozturk, J.R. Hein

Iron and manganese oxide mineralization in the Pacific Iron and manganese oxide mineralization in the Pacific

Iron, manganese, and iron-manganese deposits occur in nearly all geomorphologic and tectonic environments in the ocean basins and form by one or more of four processes: (1) hydrogenetic precipitation from cold ambient seawater, (2) precipitation from hydrothermal fluids, (3) precipitation from sediment pore waters that have been modified from bottom water compositions by diagenetic...
Authors
J.R. Hein, A. Koschinsky, P. Halbach, F.T. Manheim, M. Bau, J.-K. Kang, N. Lubick
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

238U-234U-230Th disequilibrium in hydrogenous oceanic Fe-Mn crusts: Palaeoceanographic record or diagenetic alteration? 238U-234U-230Th disequilibrium in hydrogenous oceanic Fe-Mn crusts: Palaeoceanographic record or diagenetic alteration?

A detailed TIMS study of (234Uexc/238U), (230Th/232Th), and Th/U ratios have been performed on the outermost margin of ten hydrogenous FeMn crusts from the equatorial Pacific Ocean and west-central Indian Ocean.Th/U concentration ratios generally decrease from the crust's surface down to 0.5-1 mm depth and growth rates estimated by uranium and thorium isotope ratios are significantly...
Authors
F. Chabaux, R. K. O’Nions, A.S. Cohen, J.R. Hein

Evolution of Nd and Pb isotopes in Central Pacific seawater from ferromanganese crusts Evolution of Nd and Pb isotopes in Central Pacific seawater from ferromanganese crusts

Hydrogenetic ferromanganese crusts incorporate elements from ambient seawater during their growth on seamounts. By analysing Nd, Pb and Be isotope profiles within crusts it is possible to reconstruct seawater tracer histories. Depth profiles of 10Be/9Be ratios in three Pacific ferromanganese crusts have been used to obtain growth rates which are between 1.4 and 3.8 mm/Ma. Nd and Pb...
Authors
H.F. Ling, K.W. Burton, R. K. O’Nions, B.S. Kamber, F. Von Blanckenburg, A.J. Gibb, J.R. Hein

Composition of Co-rich ferromanganese crusts and substrate rocks from the NW Marshall Islands and international waters to the north, Tunes 6 cruise Composition of Co-rich ferromanganese crusts and substrate rocks from the NW Marshall Islands and international waters to the north, Tunes 6 cruise

No abstract available.
Authors
James R. Hein, S.E. Zielinski, Hubert Staudigel, Se-Won Chang, Michelle Greene, M. S. Pringle

Precambrian to modern manganese mineralization: Changes in ore type and depositional environment Precambrian to modern manganese mineralization: Changes in ore type and depositional environment

No abstract available.
Authors
Keith Nicholson, James R. Hein, Bernhard Buhn, Somnath Dasgupta
By
Pacific Coastal and Marine Science Center

The zeolite deposits of Greece The zeolite deposits of Greece

Zeolites are present in altered pyroclastic rocks at many localities in Greece, and large deposits of potential economic interest are present in three areas: (1) the Evros region of the province of Thrace in the north-eastern part of the Greek mainland; (2) the islands of Kimolos and Poliegos in the western Aegean; and (3) the island of Samos in the eastern Aegean Sea. The deposits in...
Authors
M.G. Stamatakis, A. Hall, J.R. Hein

Global distribution of beryllium isotopes in deep ocean water as derived from Fe-Mn crusts Global distribution of beryllium isotopes in deep ocean water as derived from Fe-Mn crusts

The direct measurement of the ratio of cosmogenic 10Be (T12= 1.5 Ma) to stable terrigenously sourced 9Be in deep seawater or marine deposits can be used to trace water mass movements and to quantify the incorporation of trace metals into the deep sea. In this study a SIMS-based technique has been used to determine the 10Be9Be ratios of the outermost millimetre of hydrogenetic...
Authors
F. Von Blanckenburg, R. K. O’Nions, N.S. Belshaw, A. Gibb, J.R. Hein

Distribution and sources of pre-anthropogenic lead isotopes in deep ocean water from Fe-Mn crusts Distribution and sources of pre-anthropogenic lead isotopes in deep ocean water from Fe-Mn crusts

The lead isotope composition of ocean water is not well constrained due to contamination by anthropogenic lead. Here the global distribution of lead isotopes in deep ocean water is presented as derived from dated (ca. 100 ka) surface layers of hydrogenetic Fe-Mn crusts. The results indicate that the radiogenic lead in North Atlantic deep water is probably supplied from the continents by...
Authors
F. Von Blanckenburg, R. K. O’Nions, J.R. Hein

Hydrothermal mineralization along submarine rift zones, Hawaii Hydrothermal mineralization along submarine rift zones, Hawaii

This is the first article to describe mineralization of midplate submarine rift zones and hydrothermal manganese oxide mineralization of midplate volcanic edifices. Hydrothermal Mn oxides were recovered from submarine extensions of two Hawaiian rift zones, along Haleakala and Puna Ridges. These Mn oxides form two types of deposits, metallic stratiform layers in volcaniclastic rocks and...
Authors
J.R. Hein, A. E. Gibbs, D.A. Clague, M. Torresan

Science and Products

Collage of black nodules or rocks of varying sizes and shapes, each 1-7 inches wide, broken in half to show their cores.

Global Seabed Mineral Resources

The Global Marine Mineral Resources project studies deep ocean minerals that occur within the U.S. Exclusive Economic Zone and areas beyond national jurisdictions. Our research concerns the setting, genesis, and metal enrichment processes of mineral occurrences, the relationship between marine minerals and deep-sea biota, and the potential geochemical footprint of any seafloor mining. We aim to...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, Deep Sea Exploration, Mapping and Characterization
Global Seabed Mineral Resources

Global Seabed Mineral Resources

The Global Marine Mineral Resources project studies deep ocean minerals that occur within the U.S. Exclusive Economic Zone and areas beyond national jurisdictions. Our research concerns the setting, genesis, and metal enrichment processes of mineral occurrences, the relationship between marine minerals and deep-sea biota, and the potential geochemical footprint of any seafloor mining. We aim to...
Learn More

Geochemistry and x-ray diffraction data for hydrothermal manganese oxide rocks from the Samoa hotspot region in the South Pacific Ocean collected during research expedition KM0506 Geochemistry and x-ray diffraction data for hydrothermal manganese oxide rocks from the Samoa hotspot region in the South Pacific Ocean collected during research expedition KM0506

Hydrothermal manganese oxide rocks were collected via dredge from the Tulaga Seamount, the flank of Ofu Island, and from Soso seamount in the Samoa hotspot region offshore American Samoa during the KM0506 cruise aboard the R/V Kilo Moana in April of 2005. Rocks were subsampled at USGS and analyzed for mineralogy by x-ray diffraction as well as sent to SGS laboratories, Canada for major...
By
Pacific Coastal and Marine Science Center

Global ferromanganese crust and abyssal ferromanganese nodule prospective occurrence regions Global ferromanganese crust and abyssal ferromanganese nodule prospective occurrence regions

This data release is a polygon shapefile representing prospective occurrence regions of ferromanganese crusts and abyssal ferromanganese nodules on the seafloor throughout the global oceans. Polygons represent areas where oceanographic criteria, such as low sedimentation rate and moderate primary productivity, overlap with geologic criteria, including regions with appropriate seafloor...
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center

Geochemistry of ferromanganese crusts, nodules, and hydrothermally altered rocks from the Arctic Ocean Geochemistry of ferromanganese crusts, nodules, and hydrothermally altered rocks from the Arctic Ocean

Ferromanganese crusts, nodules, and hydrothermally altered rocks were collected via dredge within the Amerasia Basin in the Arctic Ocean during USCGC icebreaker Healy cruises HLY0805, HLY0905, and HLY1202 in 2008, 2009, and 2012 respectively. Dredged samples were donated and sent to USGS for subsampling and major and trace element geochemical analyses. Major and trace element data as...
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center

Measurements of zinc, oxygen, and pH, from sphalerite and ZnS oxidation in seawater Measurements of zinc, oxygen, and pH, from sphalerite and ZnS oxidation in seawater

This data release presents the concentration of zinc, oxygen, pH, temperature, and the time point at which measurements were taken for experimental oxidation work regarding zinc and copper sulfide minerals. These data accompany the following publication: Gartman, A., Whisman, S.P., and Hein, J.R., 2020, Interactive oxidation of sphalerite and covellite in seawater: implications for...
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center

Sorbed-water (H2O-) corrected chemistry for ferromanganese crust samples from the western equatorial Pacific Ocean Sorbed-water (H2O-) corrected chemistry for ferromanganese crust samples from the western equatorial Pacific Ocean

Ferromanganese crust samples were collected via dredge during four oceanographic research cruises to the western equatorial Pacific Ocean. The location (latitude, longitude, depth) and concentrations of 27 major and trace elements in the most recent growth layers of ferromanganese crusts from 57 dredge sites are presented here, as well as select seawater chemistry at each location. These...
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center
No results found.
Filter Total Items: 168

Climate and ocean dynamics and the lead isotopic records in Pacific ferromanganese crusts Climate and ocean dynamics and the lead isotopic records in Pacific ferromanganese crusts

As hydrogenous iron-manganese crusts grow, at rates of millimeters per million years, they record changes in the lead isotopic composition of ambient seawater. Time-resolved lead isotopic data for cut slabs of two central Pacific iron-manganese crusts that have been growing since about 50 million years ago were measured in situ by laser ablation, multiple-collector, inductively coupled...
Authors
John N. Christensen, Alex N. Halliday, Linda V. Godfrey, James R. Hein, David K. Rea
By
Pacific Coastal and Marine Science Center

The Hf isotopic composition of ferromanganese nodules and crusts and hydrothermal manganese deposits: Implications for seawater Hf The Hf isotopic composition of ferromanganese nodules and crusts and hydrothermal manganese deposits: Implications for seawater Hf

We present Hf and Pb isotopic data, and chemical compositions of the outermost layers of marine ferromanganese deposits of different types (hydrogenous and hydrothermal) with a worldwide distribution. The Hf isotopic compositions display a broad range and refine previously reported regional differences as follows: Atlantic Ocean ɛHf = −4to+2, Indian Ocean ɛHf = +2to+4, Pacific Ocean ɛHf...
Authors
L. V. Godfrey, D.-C. Lee, W. F. Sangrey, A. N. Halliday, V. J. M. Salters, James R. Hein, W. M. White

Mineralogy and stable isotopes of black shale-hosted manganese ores, Southwestern Taurides, Turkey Mineralogy and stable isotopes of black shale-hosted manganese ores, Southwestern Taurides, Turkey

No abstract available.
Authors
H. Ozturk, J.R. Hein

Iron and manganese oxide mineralization in the Pacific Iron and manganese oxide mineralization in the Pacific

Iron, manganese, and iron-manganese deposits occur in nearly all geomorphologic and tectonic environments in the ocean basins and form by one or more of four processes: (1) hydrogenetic precipitation from cold ambient seawater, (2) precipitation from hydrothermal fluids, (3) precipitation from sediment pore waters that have been modified from bottom water compositions by diagenetic...
Authors
J.R. Hein, A. Koschinsky, P. Halbach, F.T. Manheim, M. Bau, J.-K. Kang, N. Lubick
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

238U-234U-230Th disequilibrium in hydrogenous oceanic Fe-Mn crusts: Palaeoceanographic record or diagenetic alteration? 238U-234U-230Th disequilibrium in hydrogenous oceanic Fe-Mn crusts: Palaeoceanographic record or diagenetic alteration?

A detailed TIMS study of (234Uexc/238U), (230Th/232Th), and Th/U ratios have been performed on the outermost margin of ten hydrogenous FeMn crusts from the equatorial Pacific Ocean and west-central Indian Ocean.Th/U concentration ratios generally decrease from the crust's surface down to 0.5-1 mm depth and growth rates estimated by uranium and thorium isotope ratios are significantly...
Authors
F. Chabaux, R. K. O’Nions, A.S. Cohen, J.R. Hein

Evolution of Nd and Pb isotopes in Central Pacific seawater from ferromanganese crusts Evolution of Nd and Pb isotopes in Central Pacific seawater from ferromanganese crusts

Hydrogenetic ferromanganese crusts incorporate elements from ambient seawater during their growth on seamounts. By analysing Nd, Pb and Be isotope profiles within crusts it is possible to reconstruct seawater tracer histories. Depth profiles of 10Be/9Be ratios in three Pacific ferromanganese crusts have been used to obtain growth rates which are between 1.4 and 3.8 mm/Ma. Nd and Pb...
Authors
H.F. Ling, K.W. Burton, R. K. O’Nions, B.S. Kamber, F. Von Blanckenburg, A.J. Gibb, J.R. Hein

Composition of Co-rich ferromanganese crusts and substrate rocks from the NW Marshall Islands and international waters to the north, Tunes 6 cruise Composition of Co-rich ferromanganese crusts and substrate rocks from the NW Marshall Islands and international waters to the north, Tunes 6 cruise

No abstract available.
Authors
James R. Hein, S.E. Zielinski, Hubert Staudigel, Se-Won Chang, Michelle Greene, M. S. Pringle

Precambrian to modern manganese mineralization: Changes in ore type and depositional environment Precambrian to modern manganese mineralization: Changes in ore type and depositional environment

No abstract available.
Authors
Keith Nicholson, James R. Hein, Bernhard Buhn, Somnath Dasgupta
By
Pacific Coastal and Marine Science Center

The zeolite deposits of Greece The zeolite deposits of Greece

Zeolites are present in altered pyroclastic rocks at many localities in Greece, and large deposits of potential economic interest are present in three areas: (1) the Evros region of the province of Thrace in the north-eastern part of the Greek mainland; (2) the islands of Kimolos and Poliegos in the western Aegean; and (3) the island of Samos in the eastern Aegean Sea. The deposits in...
Authors
M.G. Stamatakis, A. Hall, J.R. Hein

Global distribution of beryllium isotopes in deep ocean water as derived from Fe-Mn crusts Global distribution of beryllium isotopes in deep ocean water as derived from Fe-Mn crusts

The direct measurement of the ratio of cosmogenic 10Be (T12= 1.5 Ma) to stable terrigenously sourced 9Be in deep seawater or marine deposits can be used to trace water mass movements and to quantify the incorporation of trace metals into the deep sea. In this study a SIMS-based technique has been used to determine the 10Be9Be ratios of the outermost millimetre of hydrogenetic...
Authors
F. Von Blanckenburg, R. K. O’Nions, N.S. Belshaw, A. Gibb, J.R. Hein

Distribution and sources of pre-anthropogenic lead isotopes in deep ocean water from Fe-Mn crusts Distribution and sources of pre-anthropogenic lead isotopes in deep ocean water from Fe-Mn crusts

The lead isotope composition of ocean water is not well constrained due to contamination by anthropogenic lead. Here the global distribution of lead isotopes in deep ocean water is presented as derived from dated (ca. 100 ka) surface layers of hydrogenetic Fe-Mn crusts. The results indicate that the radiogenic lead in North Atlantic deep water is probably supplied from the continents by...
Authors
F. Von Blanckenburg, R. K. O’Nions, J.R. Hein

Hydrothermal mineralization along submarine rift zones, Hawaii Hydrothermal mineralization along submarine rift zones, Hawaii

This is the first article to describe mineralization of midplate submarine rift zones and hydrothermal manganese oxide mineralization of midplate volcanic edifices. Hydrothermal Mn oxides were recovered from submarine extensions of two Hawaiian rift zones, along Haleakala and Puna Ridges. These Mn oxides form two types of deposits, metallic stratiform layers in volcaniclastic rocks and...
Authors
J.R. Hein, A. E. Gibbs, D.A. Clague, M. Torresan
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