Results 61 to 70 of about 2,801 (218)

Equilibrium Fractionation of Stable Strontium Isotopes During Adsorption to Mn Oxides

Geochemistry, Geophysics, Geosystems
Understanding the stable strontium isotope fractionation between seawater and ferromanganese crusts/nodules is crucial for reconstructing seawater Sr isotopic history.
Ben Liu, Guanhong Zhu, Jinlong Ma, Le Zhang, Gangjian Wei   +4 more
doaj   +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

On the possibility of reducing man-made burden on benthic biotic communities when mining solid minerals using technical means of various designs

Записки Горного института, 2022
The paper analyses features of the species composition and diversity of biotic communities living within the ferromanganese nodule fields (the Clarion-Clipperton field), cobalt-manganese crusts (the Magellan Seamounts) and deep-sea polymetallic sulphides
Sergei M. Sudarikov, Dmitrii A. Yungmeister, Roman I. Korolev, Vladimir A. Petrov   +3 more
doaj   +1 more source

Thorium and uranium isotopes in a manganese nodule from the Peru basin determined by alpha spectrometry and thermal ionization mass spectrometry (TIMS): Are manganese supply and growth related to climate? [PDF]

, 1996
Thorium- and uranium isotopes were measured in a diagenetic manganese nodule from the Peru basin applying alpha- and thermal ionization mass spectrometry (TIMS).
Bollhöfer, A., Eisenhauer, Anton, Frank, N., Mangini, A., Pech, D.   +4 more
core   +1 more source

The Stability of Manganese Oxides Under Laser Irradiation During Raman Analyses: II. Layer Structures

Journal of Raman Spectroscopy, Volume 56, Issue 10, Page 1072-1088, October 2025.
Manganese oxides are important geomaterials with diverse technological applications. Here, we investigate the behaviour of the most common Mn oxides with layer structures under irradiation by a 532‐nm laser, with intensity ranging from 23 µW/µm2 to 36.8 mW/µm2.
Simone Bernardini, Giancarlo Della Ventura, Luigi Jovane, Armida Sodo, Boriana Mihailova   +4 more
wiley   +1 more source

Role of polymetallic-nodule dependent fauna on carbon cycling in the eastern Clarion-Clipperton Fracture Zone (Pacific)

Frontiers in Marine Science, 2023
The abyssal seafloor in the Clarion-Clipperton Fracture Zone (CCZ) in the central Pacific is covered with large densities of polymetallic nodules, i.e., metal concretions containing iron, manganese, nickel, cobalt, and copper.
Tanja Stratmann, Tanja Stratmann
doaj   +1 more source

Constructing a cave sediment stratigraphy for the Dachstein Massif sheds light on landscape evolution (Eastern Alps)

The Depositional Record, Volume 11, Issue 4, Page 1166-1195, September 2025.
Five large Alpine cave systems on the Dachstein (Austria) were investigated and 35 sediment profiles or outcrops between 860 m a.s.l. and 1945 m a.s.l. were analysed. An altitude‐dependent overall stratigraphy is established and depositional conditions and palaeo‐environments are reconstructed.
Franziska Holzer, Lukas Plan, Susanne Gier   +2 more
wiley   +1 more source

Investigation of the Sorption Properties of Ore Materials for the Removal of Sulfur Dioxide from Exhaust Flue Gases of Power Plants

Eurasian Chemico-Technological Journal, 2015
The prospects of using a natural material – ferromanganese nodules (FMN) from the Gulf of Finland – as the SO2 adsorbent are discussed. The starting material was studied as pellets and powder using X-ray fluorescence spectroscopy, XRD, BET, and ...
N. V. Shikina, S. R. Khairulin, N. A. Rudina, T. N. Teryaeva, E. S. Mikhaylova, Z. R. Ismagilov   +5 more
doaj   +1 more source

Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions

Journal of Marine Science and Engineering, 2022
The geochemistry and mineralogy of sediments provide relevant information for the understanding of the origin and metallogenic mechanism of ferromanganese nodules and crusts.
Zhongrong Qiu, Chunhui Tao, Weilin Ma, Ágata Alveirinho Dias, Siyi Hu, Yuexiao Shao, Kehong Yang, Weiyan Zhang   +7 more
doaj   +1 more source

Internal features, mineralogy and geochemistry of ferromanganese nodules from the Gulf of Cadiz: the role of the Mediterranean Outflow Water undercurrent [PDF]

, 2010
A large suite of Fe–Mn nodules (561 samples) were recovered during the Anastasya 2001 cruise (TASYO project) along the continental margin of the Gulf of Cadiz (Eastern Central Atlantic), at the confluence of the Mediterranean Sea with the Atlantic ...
Torres Pérez-Hidalgo, Trinidad José
core   +1 more source