Results 71 to 80 of about 102,399 (167)

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

Composition of ferromanganese nodules from the Pacific

, 1977
Bulk composition of ferromanganese nodules from the pelagic environment of the Pacific Ocean is apparently related to nodule-growth rate, sediment-accumulation rate, and biologic productivity in the overlying seawater. Nodules with a high Mn/Fe ratio and
David Z Piper (6959162), M E Williamson (6959663), Piper, David Z, Williamson, M E   +3 more
core   +1 more source

Open‐Source Marine Biodiversity Data Quality in the Norwegian Sea Spanning 149 Years: Knowledge Gaps in the Deep‐Sea Mining Opening Area

Ecology and Evolution, Volume 15, Issue 8, August 2025.
To identify spatial–temporal patterns of marine species biodiversity and to provide specific information in Norway for Environmental Impact Assessments and Statements, we present biodiversity patterns for marine occurrences from 1876 to 2025 (149 years).
Laura C. Paiba‐García, Geir Johnsen, Sam Wenaas Perrin, Torkild Bakken   +3 more
wiley   +1 more source

(Table 1, page 146) Iron, manganese and nickel contents of 21 ferromanganese nodules from Combe D'Izame and Mont Peyroux, Montagne Noire

, 1973
Ferromanganese nodules (equivalent to Recent manganese nodules) are described from the Upper Devonian griotte (red pelagic limestone) of the Montagne Noire (S. France) and the Cephalopodenkalk of the Rheinisches Schiefergebirge, West Germany.
Maurice E Tucker (6971051), Tucker, Maurice E   +1 more
core   +1 more source

Minor element geochemistry of Lake Michigan ferromanganese nodules [PDF]

, 1970
Samples of ferromanganese nodules from several localities in Lake Michigan have been analyzed for their minor element content utilizing neutron activation techniques.
Edward Callender (6959552), Callender, Edward, Edgington, David N., Edgington, David N, David N Edgington (6966488), David N. Edgington, Edward Callender   +6 more
core   +1 more source

Molybdenum isotope fractionations between ferromanganese oxides and seawater influenced ancient sedimentary isotopic signatures

Communications Earth & Environment
The use of molybdenum isotopes (δ98Mo) as a paleo-redox proxy requires quantifications of fluxes and isotopic fractionations in each molybdenum sink.
Mengchun Cao, Guang-Yi Wei, Feifei Zhang, Xiangwen Ren, Xuefa Shi, Yi-Bo Lin, Tao Li, Sihui Chen, Hong-Fei Ling, Jian Cao   +9 more
doaj   +1 more source

Chemical composition of manganese nodules and crusts from the Central Pacific

, 2023
Of the 26 samples collected during VA-05/1 cruise of R V Valdivia during 1972, 19 were nodules of different forms, 4 ferromanganese crusts and 3 cylindral nodules. Nodules and crusts were air dried and pulverised.
Friedrich, Günther H W, Roonwal, G S
core   +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

The Formation of Ferromanganese Crusts From the Western Mariana Ridge and Implications for Deep‐Water Environment Since the Late Pliocene

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 5, May 2025.
Abstract Pacific Deep Water (PDW) plays a crucial role in the dynamics of the global thermohaline circulation. Understanding the evolution of the PDW is significant to reveal the global carbon cycle and its climatic responses. We present a comprehensive study of ferromanganese crusts from the Western Mariana Ridge (WMR), which includes mineralogical ...
Linzhang Wang, Zhigang Zeng
wiley   +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