Results 1 to 10 of about 348,018 (310)

A Novel Device for the In Situ Enrichment of Gold from Submarine Venting Fluids

Journal of Marine Science and Engineering, 2022
Gold and other metals (Cu, Zn, Ag, etc.) are enriched in vent fluids, approximately 3–5 orders of magnitude higher than those in seawater, and this leads to the formation of sulfide enrichment in Cu, Zn, Au, and Ag deposited on the mid-ocean ridge and ...
Zhigang Zeng, Xuebo Yin, Xiaoyuan Wang, Yu Yan, Xueying Zhang   +4 more
doaj   +1 more source

The Role of the Surface Acid–Base Nature of Nanocrystalline Hydroxyapatite Catalysts in the 1,6-Hexanediol Conversion

Nanomaterials, 2021
Hydroxyapatite is known to have excellent catalytic properties for ethanol conversion and lactic acid conversion, and their properties are influenced by the elemental composition, such as Ca/P ratio and sodium content.
Asato Nakagiri, Kazuya Imamura, Kazumichi Yanagisawa, Ayumu Onda   +3 more
doaj   +1 more source

Chemical and Isotopic Composition of Sulfide Minerals from the Noho Hydrothermal Field in the Okinawa Trough

Journal of Marine Science and Engineering, 2022
Studies of the element contents and isotopic characteristics of sulfide minerals from seafloor hydrothermal sulfide deposits are a significant method of investigating seawater-fluid mixing and fluid-rock and/or sediment interactions in hydrothermal ...
Zhigang Zeng, Zuxing Chen, Haiyan Qi, Bowen Zhu   +3 more
doaj   +1 more source

Trace Element Evidence of Subduction-Modified Mantle Material in South Mid-Atlantic Ridge 18–21°S Upper Mantle

Journal of Marine Science and Engineering, 2023
Mid-ocean ridge basalts (MORBs), produced at mid-ocean ridge where the continents and subduction zones are distant, are the product of partial melting of the upper mantle and their chemical composition can provide information about the mantle itself. The
Tianxiao Ji, Zhigang Zeng
doaj   +1 more source

Lithium, Oxygen and Magnesium Isotope Systematics of Volcanic Rocks in the Okinawa Trough: Implications for Plate Subduction Studies

Journal of Marine Science and Engineering, 2021
Determining the influence of subduction input on back-arc basin magmatism is important for understanding material transfer and circulation in subduction zones.
Zhigang Zeng, Xiaohui Li, Yuxiang Zhang, Haiyan Qi   +3 more
doaj   +1 more source

Two Processes of Anglesite Formation and a Model of Secondary Supergene Enrichment of Bi and Ag in Seafloor Hydrothermal Sulfide Deposits

Journal of Marine Science and Engineering, 2021
The in situ element concentrations and the sulfur (S), and lead (Pb) isotopic compositions in anglesite were investigated for samples from seafloor hydrothermal fields in the Okinawa Trough (OT), Western Pacific. The anglesite grains are of two kinds: (1)
Zhigang Zeng, Zuxing Chen, Haiyan Qi
doaj   +1 more source

Timescales of Magma Mixing Beneath the Iheya Ridge, Okinawa Trough: Implications for the Stability of Sub-Seafloor Magmatic Systems

Journal of Marine Science and Engineering, 2023
Submarine volcanic eruptions can be destructive for marine environments and resources. Magma mixing is considered to be an important trigger for volcanic eruptions.
Yuxiang Zhang, Zuxing Chen, Zhigang Zeng
doaj   +1 more source

Strontium, Hydrogen and Oxygen Behavior in Vent Fluids and Plumes from the Kueishantao Hydrothermal Field Offshore Northeast Taiwan: Constrained by Fluid Processes

Journal of Marine Science and Engineering, 2022
Strontium (Sr), hydrogen (H) and oxygen (O) in vent fluids are important for understanding the water–rock interaction and hydrothermal flux in hydrothermal systems.
Zhigang Zeng, Xiaoyuan Wang, Xuebo Yin, Shuai Chen, Haiyan Qi, Chen-Tung Arthur Chen   +5 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

Editorial: Hydrothermal microbial ecosystems [PDF]

Frontiers in Microbiology, 2015
The papers in the “Hydrothermal Vent” research topic cover a range of microbiological research in deep and shallow hydrothermal environments, from high temperature “blacksmokers”, to diffuse flow habitats and episodically discharging subsurface fluids, to the hydrothermal plumes.Together they provide a snapshot of current research interests in a field ...
Teske, Andreas, Reysenbach, Anna-Louise
openaire   +3 more sources