Results 11 to 20 of about 102,399 (167)

Local distribution of cobalt and selective enrichment of platinum in oceanic ferromanganese nodules [PDF]

E3S Web of Conferences, 2019
The distribution of cobalt in the structure of ferromanganese nodules (FMN) was studied using beta-autoradiography. In some cases, the content of element increased in the outer part of the nodules, or in thin layers within the nodules.
Belyanin Dmitriy, Zhmodik Sergey, Airiyants Evgeniya, Kirichenko Ivan   +3 more
doaj   +2 more sources

A New Method for Calculating Growth Rates of Ferromanganese Nodules From Marginal Seas: Implications for Terrigenous Input in the South China Sea

Geophysical Research Letters
Accurate age determination of marine ferromanganese (Fe‐Mn) nodules is crucial for interpreting their geochemical compositions as paleoceanographic tracers and for understanding critical metal (e.g., Co, Ni) enrichment. Previous empirical dating methods,
Zimeng Xue, Shihua Zhong, Zhiqing Lai, Sanzhong Li, Jing Li, Jun Sun   +5 more
doaj   +2 more sources

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

Geochemistry, Geophysics, Geosystems
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.
Adam D. Sproson, Toshihiro Yoshimura, Shigeyuki Wakaki, Takahiro Aze, Yusuke Yokoyama, Tsuyoshi Ishikawa, Naohiko Ohkouchi   +6 more
doaj   +2 more sources

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

Environ Microbiol
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.
Majamäki R, Wasiljeff J, Purkamo L, Hultman J, Kohl L, Asmala E, Yli-Hemminki P, Jørgensen KS, Muurinen J, Virtasalo JJ.   +9 more
europepmc   +2 more sources

Review and Integrated Framework for Deep-Sea Mineral Resources, Ecological Influence, and Future Development. [PDF]

Int J Microbiol
As global industrialization advances and land‐based resources decline, deep‐sea resource development is becoming increasingly vital. The deep sea is rich in minerals such as polymetallic nodules, polymetallic sulfides, and cobalt‐rich crust. However, deep‐sea ecosystems and geochemical cycles can be severely impacted by extensive mineral mining.
Liu J, Wang C, Etim IN, Zhang R, Sand W, Wang X, Yang L, Ge Y, Liu J.   +8 more
europepmc   +2 more sources

Investigation of strength and deformability of the deep-water clay base of the ferromanganese nodules collection unit [PDF]

E3S Web of Conferences, 2022
The article considers methods, instruments and equipment for laboratory and field studies of bottom soils of the Clarion-Clipperton region of the Pacific Ocean.
Ananiev Andrey
doaj   +1 more source

The Engineering and geological substantiation of the resource potential of the bed of the South China

Горные науки и технологии, 2023
The program for the development of the national economy based on own mineral raw materials as adopted in the Socialist Republic of Vietnam requires an increase the volumes of minerals.
Yu. V. Kirichenko, Tran Thien Quy Ngo, M. V. Shchyokina   +2 more
doaj   +1 more source

The Geochemical Features and Genesis of Ferromanganese Deposits from Caiwei Guyot, Northwestern Pacific Ocean

Journal of Marine Science and Engineering, 2022
The ferromanganese deposit is a type of marine mineral resource rich in Mn, Fe, Co, Ni, and Cu. Its growth process is generally multi-stage, and the guyot environment and seawater geochemical characteristics have a great impact on the growth process ...
Linzhang Wang, Zhigang Zeng
doaj   +1 more source

Geochemistry of ferromanganese nodules in the soil of Okinawa Island, Japan: Paleoclimatic implications and discrimination scheme of the nodule origins

Journal of Asian Earth Sciences: X, 2022
Shimajiri–Mahji refers to dark-red soil covering Ryukyu limestone that is characterized by buried ferromanganese (Fe–Mn) nodules, and it is widely distributed in Okinawa Island, southwestern Japan.
Keishiro Azami, Kazutaka Yasukawa, Yasuhiro Kato   +2 more
doaj   +1 more source

Ferromanganese nodules and micro-hardgrounds associated with the Cadiz Contourite Channel (NE Atlantic): Palaeoenvironmental records of fluid venting and bottom currents [PDF]

, 2012
Ferromanganese nodule fields and hardgrounds have recently been discovered in the Cadiz Contourite Channel in the Gulf of Cadiz (850–1000 m). This channel is part of a large contourite depositional system generated by the Mediterranean Outflow Water ...
Medialdea, Teresa, González, Francisco Javier, Ortiz, José E., Medialdea Cela, Teresa, Merinero, Raúl, Torres Pérez-Hidalgo, Trinidad José, León, Ricardo, Somoza, Luis, Merinero Palomares, Raúl, Martinez Frias, Jesus, González Sanz, Francisco Javier, Lunar Hernández, María Del Rosario, Ortiz Menéndez, José Eugenio, León Buendía, Ricardo, Lunar, Rosario, Somoza Losada, Luis, Torres, Trinidad de   +16 more
core   +1 more source