Results 41 to 50 of about 58,716 (144)

(Table 1) Contents of chemical elements and some relationships between them in the surface layer (<2 mm) of a ferromanganese nodule from Station DM41-3911-76

, 2006
(Table 1) Contents of chemical elements and some relationships between them in the surface layer (
Uspenskaya, Tatyana Y, Dubinin, Alexander V, Alexander V Dubinin (6966845), Tatyana Y Uspenskaya (6964079)   +3 more
core   +1 more source

Different Ferromanganese Concretion Morphologies Host Distinct Microbial Communities and Metal Accumulation Patterns in the Baltic Sea

Environmental Microbiology, Volume 28, Issue 7, July 2026.
We investigated how microbes influence the metal accumulation and release in Fe‐Mn concretions from the Gulf of Finland using microcosm incubation experiments. We studied three main concretion morphotypes: crust, discoidal, and spheroidal. Microbes enhanced metal accumulation in discoidal and spheroidal morphotypes.
Renata Majamäki, Joonas Wasiljeff, Lotta Purkamo, Jenni Hultman, Lukas Kohl, Eero Asmala, Pirjo Yli‐Hemminki, Kirsten S. Jørgensen, Johanna Muurinen, Joonas J. Virtasalo   +9 more
wiley   +1 more source

Heterogeneous marine environments diversify microbial-driven polymetallic nodule formation in the South China Sea

Frontiers in Marine Science
Most studies on the genesis of polymetallic nodules suggested that nodules in the South China Sea (SCS) are hydrogenetic; however, the complexity and the heterogeneity in hydrology and geochemistry of the SCS might cause different processes of nodule ...
Mingyan Lai, Qian Liu, Qian Liu, Qian Liu, Xiaogu Wang, Dong Sun, Lihua Ran, Xiaohu Li, Xiaohu Li, Xiaohu Li, Chenghao Yang, Bo Lu, Xue-Wei Xu, Chun-Sheng Wang, Chun-Sheng Wang, Chun-Sheng Wang   +15 more
doaj   +1 more source

Fe–Mn Crust δ98Mo Decline Records Tectonic Forcing on Marine Oxide Sink Reduction During the Early Eocene–Early Oligocene

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract S, Tl, and W isotope records document pronounced early Eocene shifts in marine redox, yet the absence of a Mo isotope record obscures its progression. Here, we present ∼80 Myr Mo–Os–Be–Nd isotope profiles from a Northwest Pacific hydrogenetic Fe–Mn crust, revealing a systematic δ98Mo decline from −0.24‰ (early Eocene) to −0.83‰ (early ...
Limin Zhang, Jiangbo Ren, Hongjin Chen, Haozhe Wang, Zhen Sun, Yong Yang, Huodai Zhang, Zhenquan Wei, Lixue Zhang, Yingzhi Ren, Gaowen He   +10 more
wiley   +1 more source

Ferromanganese crusts and nodules chemical analyses from the USGS Woods Hole analytical laboratories

, 2023
Beginning in 1983 the USGS searched major oceanographic institution dredge archives for samples and data relevant to the USGS Woods-Hole Ferromanganese Crust Data Base.
Manheim, Frank T, Ling, T H, Commeau, J A   +2 more
core   +1 more source

Petrography and stratigraphic Os isotopic ages of ferromanganese nodules from the Northwest Pacific east of Minamitorishima Island

Journal of Asian Earth Sciences: X
The area offshore of Minamitorishima Island, Northwestern Pacific Ocean, contains large amounts of seafloor mineral resources such as ferromanganese (Fe–Mn) nodules, Fe–Mn crusts, and rare-earth element and yttrium (REY)-rich muds.
Tatsuo Nozaki, Kosuke T. Goto, Yutaro Takaya, Kazuhiko Shimada, Akira Owada, Gen Shimoda, Jun-Ichi Kimura, Qing Chang, Tetsuji Onoue, Shiki Machida, Teruaki Ishii, Kenji Shimizu, Naoto Hirano, Kazuhide Mimura, Moei Yano, Junichiro Ohta, Yasuhiro Kato   +16 more
doaj   +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

Preliminary Economic Feasibility Study of Ferromanganese Nodule Mining by Mechanical Lifting and Small-Scale Collectors

, 2021
Ferromanganese nodules have been recognized as a potential future metal source for over 50 years. Many research and development efforts have been conducted by many organizations.
Hyung-Woo Kim, Tae-Kyung Yeu, Rei Arai, Tetsuo Yamazaki, Sup Hong   +4 more
core   +1 more source

Silicate and Carbonate Weathering Perturbation at the Eocene‐Oligocene Transition Recorded by Mg Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract During the Eocene‐Oligocene Transition (ca. 34 Ma), the Earth underwent a dramatic decline in atmospheric CO2, global cooling, a deepening of the carbonate compensation depth (CCD), and the formation of a permanent ice sheet on Antarctica. The expansion of Antarctic glaciers eroded the underlying bedrock and increased the weathering flux to ...
Adam D. Sproson, Toshihiro Yoshimura, Shigeyuki Wakaki, Takahiro Aze, Yusuke Yokoyama, Tsuyoshi Ishikawa, Naohiko Ohkouchi   +6 more
wiley   +1 more source

Ferromanganese nodules and crusts chemical analyses from SIO outside of the International Decade of Ocean Exploration (IDOE) program

, 2023
The data encoded in the Scripps Institute of Oceanography Nodule Data Bank (SNDB) was used as a model for the publication of USGS Ferromanganese Crusts Data Bank.
Frazer, Jane Z, Fisk, Mary B
core   +1 more source