Results 41 to 50 of about 2,801 (218)

Direct Catalytic Reduction of SO2 by CH4 over Fe-Mn Catalysts Prepared by Granulation of Ferromanganese Nodules

Eurasian Chemico-Technological Journal, 2015
The chemical, textural, structural and strength properties of ferromanganese nodules and granulated Fe-Mn catalysts containing such nodules were studied.
N. K. Shikina, S. R. Khairulin, S. A. Yashnik, T. N. Teryaeva, Z. R. Ismagilov   +4 more
doaj   +1 more source

Copper-nickel-rich, amalgamated ferromanganese crust-nodule deposits from Shatsky Rise, NW Pacific [PDF]

, 2012
A unique set of ferromanganese crusts and nodules collected from Shatsky Rise (SR), NW Pacific, were analyzed for mineralogical and chemical compositions, and dated using Be isotopes and cobalt chronometry.
Andel, Anders, Beaman, Bidoglio, Boström, Burton, Chan, Chmeleff, Cook, Cortese, Cronan, Cronan, Delaney, Dymond, Frank, Frank, Garbe-Schönberg, Halbach, Hein, Hein, Hein, Hein, Hein, Hein, Hein, Hsieh, Hunter, J. R. Hein, Kawabe, Keigwin, Kennett, Klovan, Knauss, Korschinek, Koschinsky, Koschinsky, Kubik, Lao, Leinen, Leinen, M. Christl, M. Frank, Mahoney, Manheim, Mantyla, Martin, McLennan, Miller, Monteiro, Moran, Murray, Müller, Nakanishi, Nozaki, Okubo, Rea, Rogers, Roy-Barman, Saager, Sager, Sager, Sager, Sager, T. A. Conrad, Tatsumi, Verlaan, W. W. Sager   +66 more
core   +1 more source

Ecological functions of uncultured microorganisms in the cobalt-rich ferromanganese crust of a seamount in the central Pacific are elucidated by fosmid sequencing [PDF]

, 2014
Author Posting. © The Author(s), 2014. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution.
Cheng, Hong, Huo, Yingyi, Jiang, Xiawei, Pan, Jie, Post, Anton F., Wang, Chunsheng, Wu, Min, Xu, Xuewei   +7 more
core   +1 more source

On the discovery of ferromanganese nodules in the World Ocean

Deep Sea Research Part I: Oceanographic Research Papers, 2021
Abstract For a century, the discovery of ferromanganese (Fe–Mn) nodules in the World Ocean was universally and indisputably credited to the Challenger circum-global oceanographic expedition of 1872–1876, during which the first manganese nodules and crusts were dredged up from the sea floor in February–March 1873.
Igor M. Belkin, Per S. Andersson, Jörgen Langhof   +2 more
openaire   +2 more sources

Geochemical Behaviors of Heavy Metal(loid)s in Soil Ferromanganese Nodules in Typical Karst Areas in Southwest China

Agronomy, 2023
The ferromanganese nodules (FMNs) developing in soils of karst regions are naturally characterized by high heavy metal(loid)s contents due to several geological factors.
Wenbing Ji, Zhixiang Luo, Jianyu Huang, Xu Liu, Haiyun He, Yang Gong, Meng Chen, Yubo Wen, Rongrong Ying   +8 more
doaj   +1 more source

Ultrafine-scale magnetostratigraphy of marine ferromanganese crust [PDF]

, 2011
http://geology.geoscienceworld.org/content/39/3/227.full.pdf+htmlHydrogenetic ferromanganese crusts are iron-manganese oxide chemical precipitates on the seafloor that grow over periods of tens of millions of years.
Baudenbacher, Franz J., Fong, Luis E., Harder, Rene, Joshima, Masato, McBride, Krista K., Miyagi, Isoji, Oda, Hirokuni, Shantz, Chris, Usui, Akira, Weiss, Benjamin P.   +9 more
core   +1 more source

Rethinking Seawater Mo Isotope Mass‐Balance and the Sedimentary Mo Record

Paleoceanography and Paleoclimatology, Volume 41, Issue 3, March 2026.
Abstract A lingering misconception is that seawater 98Mo/95Mo ratios should have increased more or less linearly with the oxygenation of Earth's oceans. At the root of this hypothesis is the generalization that oxidizing marine sediments have a stronger affinity for lighter‐mass Mo isotopes than their reducing counterparts.
C. M. Ostrander, O. Dellwig
wiley   +1 more source

Long term records of erosional change from marine ferromanganese crusts [PDF]

, 2000
Ferromanganese crusts from the Atlantic, Indian and Pacific Oceans record the Nd and Pb isotope compositions of the water masses from which they form as hydrogenous precipitates.
A Bollhöfer, A Eisenhauer, A G Kaneps, A Michard, B K Schaule, B Winter, C Jeandel, C N Wold, D A Hodell, D J DePaolo, D J Piepgras, D J Piepgras, D J Piepgras, D J Piepgras, D Puteanus, E Meier-Reimer, F Albarède, F Albarède, F Blanckenburg von, F Blanckenburg von, F Chabaux, F Chabaux, F T Manheim, F Woodruff, G H Haug, G Keller, G M McMurtry, H Duque-Caro, H-F Ling, J Hess, J N Christensen, K Billups, K W Burton, L A Derry, L G Marshall, M C Stordal, M E Raymo, M E Raymo, M L Delaney, M Segl, M. Frank, Martin Frank, N J Shackleton, N S Belshaw, N W Driscoll, P F Barker, P Halbach, R B Koepnick, R K O’Nions, R. Keith O’Nions, S L Goldstein, S Levitus, U Neff, V K Banakar, W Abouchami, W Abouchami   +55 more
core   +1 more source

Gold Mineralizing Potential of the Late Triassic Calcareous, Carbonaceous and Sulfide‐Rich Sedimentary Rocks of the Isatomae Formation in the South Kitakami Belt, Japan

Resource Geology, Volume 76, Issue 1, January/December 2026.
Isatomae Formation illustrating mineralogical and geochemical characteristics. (a) Overview of the Isatomae Formation, showing the marine anoxic environment and related biogenic processes. (b) Deposition of metal‐rich Fe oxyhydroxides were transformed into sulfides through diagenesis and low grade metamorphism.
June Born Born, Yasushi Watanabe, Takuya Echigo, Yoshiaki Kon, Takumi Mimura   +4 more
wiley   +1 more source

Bacterial mats of the oxide ores in the world ocean

Известия высших учебных заведений: Геология и разведка, 2017
Bacterial mats, formed by successively accumulating biofilms, are the main constructive component of the oxide ferromanganese ores on the oceanic floor.
V. V. Avdonin, E. A. Zhegallo, N. E. Sergeeva   +2 more
doaj   +1 more source