James Hein
zation
Geologist Emeritus with the USGS Pacific Coastal and Marine Science Center
Science and Products
Filter Total Items: 167
Low sulfur content in submarine lavas: An unreliable indicator of subaerial eruption Low sulfur content in submarine lavas: An unreliable indicator of subaerial eruption
Low S content (
Authors
A. S. Davis, D.A. Clague, M. S. Schulz, J.R. Hein
Petrography and chemistry of hydrothermal manganese oxyhydroxides from the Mariana and Izu-Bonin Volcanic Arcs, West Pacific Petrography and chemistry of hydrothermal manganese oxyhydroxides from the Mariana and Izu-Bonin Volcanic Arcs, West Pacific
No abstract available.
Authors
Marjorie S. Schulz, James R. Hein
Age determinations and growth rates of Pacific ferromanganese deposits using strontium isotopes Age determinations and growth rates of Pacific ferromanganese deposits using strontium isotopes
87Sr86Sr ratios, trace element and REE compositions, and textural characteristics were determined for three hydrogenetic Fe-Mn crusts, one hydrothermal deposit, and two mixed hydrothermalhydrogenetic crusts from the Pacific. The Sr isotope data are compared to the Sr seawater curve for the Cenozoic to determine the ages and growth rates of the crusts. The 87Sr86Sr in the crusts does not...
Authors
B.L. Ingram, J.R. Hein, G. L. Farmer
Eocene diatom chert from Adak Island, Alaska Eocene diatom chert from Adak Island, Alaska
Bedded quartz cherts that contain recognizable diatoms are rare in the geologic record and are described here for the first time. The Eocene Andrew Lake Formation on Adak Island, Alaska consists of about 800 m of sedimentary and volcanogenic rocks. Quartz cherts containing diatoms occur in the upper part of the Andrew Lake Formation and crop out on the northern part of the island. The...
Authors
James R. Hein, Hseuh-Wen Yeh, John A. Barron
Mineralogy and geochemistry of Co-rich ferromanganese crusts and substrate rocks from Karin Ridge and Johnston Island, Farnella Cruise F7-86-HW Mineralogy and geochemistry of Co-rich ferromanganese crusts and substrate rocks from Karin Ridge and Johnston Island, Farnella Cruise F7-86-HW
No abstract available.
Authors
J.R. Hein, Herbert Kirschenbaum, W. C. Schwab, Akira Taggart Usui, K.L. Olson, L. G. Pickthorn, M. S. Schulz, C.L. Morgan
Geological, geochemical, geophysical, and oceanographic data and interpretations of seamounts and co-rich ferromanganese crusts from the Marshall Islands, KORDI-USGS R.V. Farnella cruise F10-89-CP Geological, geochemical, geophysical, and oceanographic data and interpretations of seamounts and co-rich ferromanganese crusts from the Marshall Islands, KORDI-USGS R.V. Farnella cruise F10-89-CP
No abstract available.
Authors
J.R. Hein, Jung-Keuk Kang, M. S. Schulz, Byong-Kwon Park, Herbert Kirschenbaum, Suk-Hoon Yoon, R. L. Olson, V. K. Smith, Dong-Won Park, G. O. Riddle, P. J. Quinterno, Yoon-Oh Lee, A. S. Davis, R. S. Kim, M. S. Pringle, Dong-Lim Choi, L. G. Pickthorn, S.O. Schlanger, F. K. Duennebier, D. D. Bergersen, J. M. Lincoln
Science and Products
Filter Total Items: 167
Low sulfur content in submarine lavas: An unreliable indicator of subaerial eruption Low sulfur content in submarine lavas: An unreliable indicator of subaerial eruption
Low S content (
Authors
A. S. Davis, D.A. Clague, M. S. Schulz, J.R. Hein
Petrography and chemistry of hydrothermal manganese oxyhydroxides from the Mariana and Izu-Bonin Volcanic Arcs, West Pacific Petrography and chemistry of hydrothermal manganese oxyhydroxides from the Mariana and Izu-Bonin Volcanic Arcs, West Pacific
No abstract available.
Authors
Marjorie S. Schulz, James R. Hein
Age determinations and growth rates of Pacific ferromanganese deposits using strontium isotopes Age determinations and growth rates of Pacific ferromanganese deposits using strontium isotopes
87Sr86Sr ratios, trace element and REE compositions, and textural characteristics were determined for three hydrogenetic Fe-Mn crusts, one hydrothermal deposit, and two mixed hydrothermalhydrogenetic crusts from the Pacific. The Sr isotope data are compared to the Sr seawater curve for the Cenozoic to determine the ages and growth rates of the crusts. The 87Sr86Sr in the crusts does not...
Authors
B.L. Ingram, J.R. Hein, G. L. Farmer
Eocene diatom chert from Adak Island, Alaska Eocene diatom chert from Adak Island, Alaska
Bedded quartz cherts that contain recognizable diatoms are rare in the geologic record and are described here for the first time. The Eocene Andrew Lake Formation on Adak Island, Alaska consists of about 800 m of sedimentary and volcanogenic rocks. Quartz cherts containing diatoms occur in the upper part of the Andrew Lake Formation and crop out on the northern part of the island. The...
Authors
James R. Hein, Hseuh-Wen Yeh, John A. Barron
Mineralogy and geochemistry of Co-rich ferromanganese crusts and substrate rocks from Karin Ridge and Johnston Island, Farnella Cruise F7-86-HW Mineralogy and geochemistry of Co-rich ferromanganese crusts and substrate rocks from Karin Ridge and Johnston Island, Farnella Cruise F7-86-HW
No abstract available.
Authors
J.R. Hein, Herbert Kirschenbaum, W. C. Schwab, Akira Taggart Usui, K.L. Olson, L. G. Pickthorn, M. S. Schulz, C.L. Morgan
Geological, geochemical, geophysical, and oceanographic data and interpretations of seamounts and co-rich ferromanganese crusts from the Marshall Islands, KORDI-USGS R.V. Farnella cruise F10-89-CP Geological, geochemical, geophysical, and oceanographic data and interpretations of seamounts and co-rich ferromanganese crusts from the Marshall Islands, KORDI-USGS R.V. Farnella cruise F10-89-CP
No abstract available.
Authors
J.R. Hein, Jung-Keuk Kang, M. S. Schulz, Byong-Kwon Park, Herbert Kirschenbaum, Suk-Hoon Yoon, R. L. Olson, V. K. Smith, Dong-Won Park, G. O. Riddle, P. J. Quinterno, Yoon-Oh Lee, A. S. Davis, R. S. Kim, M. S. Pringle, Dong-Lim Choi, L. G. Pickthorn, S.O. Schlanger, F. K. Duennebier, D. D. Bergersen, J. M. Lincoln