Results 61 to 70 of about 58,716 (144)

In-situ analysis of polymetallic nodules from the clarion-Clipperton zone, Pacific Ocean: implication for controlling on chemical composition variability

Frontiers in Marine Science
Polymetallic ferromanganese nodules (PMNs) in the Clarion-Clipperton Zone (CCZ) exhibit significant spatial variability in chemical composition, which complicates exploration efforts and increases associated costs.
Jie Li, Yinjia Jin, Hao Wang, Kehong Yang, Zhimin Zhu, Xingwei Meng, Xiaohu Li   +6 more
doaj   +1 more source

Integrated geochemical and biomarker signature of fast-growing Fe-Mn nodules from the Gulf of Finland, Baltic Sea

Frontiers in Marine Science
Ferromanganese (Fe-Mn) nodules, characterized by rapid growth and diverse morphologies, are widespread on the Baltic Sea seafloor. This study provides a comprehensive analysis of the bulk elemental composition, internal structures, and organic matter (OM)
Natalia Shulga, Peter Perfilov, Konstantin Ryazantsev   +2 more
doaj   +1 more source

Supplemental Material: Cerium behavior during the transformation of birnessite to todorokite: Implications for the origin of Ce anomalies in hydrodiagenetic ferromanganese nodules

Table S1: EPMA data of major elements of ferromanganese nodule. Table S2: LA-ICP-MS data of trace elements of ferromanganese nodule.
et al. (7893743), Rui Wang (20692418), Yu Fu (17321642)   +2 more
core   +1 more source

(Table 1, page 258) Chemical composition of 24 concentric layers inside manganese nodule DH9-9 from the Pacific Ocean

, 1981
The minor-element composition of concentric layers within a single ferromanganese nodule from the eastern North Pacific exhibits strong correlations with Fe and Mn contents but appears to be independent of pronounced mineralogic variations.
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

High-Resolution Study of the Magnetic Properties in Marine Sediments Based on Diamond NV Center Magnetometry

Applied Sciences
Magnetostratigraphic dating has been widely employed for the study of marine sediments, including ferromanganese nodules (MFNs) and ferromanganese crusts (MFCs), using high-resolution rock magnetic microscopy (RMM) techniques.
Yu-An Du, Huafeng Qin, Shuangchi Liu, Yongxin Pan   +3 more
doaj   +1 more source

Iron mineral structure, reactivity, and isotopic composition in a South Pacific Gyre ferromanganese nodule over 4Ma [PDF]

, 2015
International audienceDeep-sea ferromanganese nodules accumulate trace elements from seawater and underlying sediment porewaters during the growth of concentric mineral layers over millions of years. These trace elements have the potential to record past
Horn, Gregory, Sorensen, Jeffry, Marcus, Matthew A, Rouxel, Olivier, J., Edwards, Katrina J, Fakra, Sirine C, Fakra, Sirine C., Toner, Brandy M., Jelinski, Nicolas A., Jelinski, Nicolas A, Edwards, Katrina J., Guéguen, Bleuenn, Toner, Brandy M, Marcus, Matthew A., Rouxel, Olivier   +14 more
core   +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

Adipokinetic hormone enhances nodule formation and phenoloxidase activation in adult locusts injected with bacterial lipopolysaccharide [PDF]

, 2003
Interactions between the locust endocrine and immune systems have been studied in vivo in relation to nodule formation and activation of the prophenoloxidase cascade in the haemolymph.
Opoku-Ware, K., Chandrakant, S., Goldsworthy, Graham J.   +2 more
core   +1 more source

Ferromanganese nodules and crusts chemical analysis of samples from cruise L583HW (R/V S.P. Lee) using X-ray

, 2023
The cooperative cruise of the R/V S.P. Lee in 1983 provided an excellent opportunity for a wide-range interlaboratory study on samples of crusts ground and sieved aboard the vessel.
Manheim, Frank T, Commeau, J A
core   +1 more source