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Using the Oxidation State of Iron Plagioclase to Evaluate Magma Oxygen Fugacity: A microXANES Study
Oxidation State Iron Plagioclase Evaluate Magma Oxygen Fugacity A micro XANES Study
2014/10/22
The goal of this study is to explore the relationship between the oxygen fugacity of a melt and the Fe3+/FeTotal of plagioclase crystals produced from the melt. If the relationship between the two can...
Textures and Rare Earth Elements Composition of Banded Iron Formations (BIF) at Njweng Prospect, Mbalam Iron Ore District, Southern Cameroon
REE BIF Martite Magnetite Alteration Njweng Cameroon
2013/3/11
The REE signature of banded iron formations (BIF) and martite-goethite mineralization of the Njweng ridge (South Cameroon) are used here to decipher the nature of the ocean during the period of BIF pr...
Episodic Sedimentation of Heavy Metals and Iron in Bizerte Lagoon, Northern Tunisia
Core Clay Minerals Organic Matters Heavy Metals Bizerte Lagoon Tunisia
2013/3/11
The correlations between various sedimentological and geochemical parameters permit to identify the main sedimenta tion phases of pollution carriers, especially those related to the sediment cores lit...
Geochemistry of Muro Banded Iron-Formation, Central Nigeria
Muro Iron-Formation Oxide Facies Carbonate Facies
2013/3/11
Muro Banded Iron-Formation occurs in the Proterozoic Toto Schist Belt, central Nigeria. It consists preponderantly of oxide facies and minor carbonate facies. The oxide facies is made up of alternatin...
Dissolved Organic Matter-Complexed Iron in Two Rivers with Different Types of Soils in Watershed Area
Dissolved Organic Matter (DOM) Dissolved Humic Substances (DHS)
2013/3/11
Concentrations of dissolved organic matter (DOM), dissolved humic substances (DHS), and DOM-complexed Fe (DOM-Fe) in Yamakuni and Oita Rivers, Japan, of which headstream is near in location, flow pass...
Enrichment of Phosphate on Ferrous Iron Phases during Bio-Reduction of Ferrihydrite
Phosphate Iron Reduction Ferrihydrite Ferrous Iron Vivianite
2013/3/7
The reduction of less stable ferric hydroxides and formation of ferrous phases is critical for the fate of phosphorus in anaerobic soils and sediments. The interaction between ferrous iron and phospha...
Banded Iron Formations (BIFs) and Associated Sediments Do Not Reflect the Physical and Chemical Properties of Early Precambrian Seas
Early Precambrian BIF Non-Marine Polar Regions
2013/3/7
Ring-in-ring structures in Australian Early Precambrian banded iron formation (BIF) were identified as bubbling mud wavelets, which lithified during temporary exposure, contradicting the alleged BIF d...
Natural iron enrichment around the Antarctic Peninsula in the Southern Ocean
Natural iron enrichment the Antarctic Peninsula the Southern Ocean
2010/1/21
In the Bransfield Strait, representing a mixture of waters from the Weddell Sea and the Antarctic Circumpolar Current (ACC), concentrations of DFe were ~0.4 nM and of TaLFe ~1.7 nM. The highest concen...
Natural iron enrichment around the Antarctic Peninsula in the Southern Ocean
Natural iron enrichment Antarctic Peninsula Southern Ocean
2010/1/7
As part of the US-AMLR program in January-February of 2006, 99 stations in the South Shetland Islands-Antarctic Peninsula region were sampled to understand the variability in hydrographic and biologic...
Synergistic effects of iron and temperature on Antarctic phytoplankton and microzooplankton assemblages
Synergistic effects iron and temperature Antarctic phytoplankton microzooplankton assemblages
2010/1/21
Iron availability and temperature are important limiting factors for the biota in many areas of the world ocean, and both have been predicted to change in future climate scenarios. However, the impact...
Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study
Spatial distribution the iron supply phytoplankton the Southern Ocean a model study
2010/1/21
An upgraded version of the biogeochemical model SWAMCO is coupled to the ocean-sea-ice model NEMO-LIM to explore processes governing the spatial distribution of the iron supply to phytoplankton in the...
Dissolved iron (II) in the Baltic Sea surface water and implications for cyanobacterial bloom development
Dissolved iron Baltic Sea surface water cyanobacterial bloom development
2010/1/21
Iron chemistry measurements were conducted during summer 2007 at two distinct locations in the Baltic Sea (Gotland Deep and Landsort Deep) to evaluate the role of iron for cyanobacterial bloom develop...
The impact on atmospheric CO2 of iron fertilization induced changes in the ocean's biological pump
atmospheric CO2 iron fertilization ocean's biological pump
2010/1/15
Using numerical simulations, we quantify the impact of changes in the ocean's biological pump on the air-sea balance of CO2 by fertilizing a small surface patch in the high-nutrient, low-chlorophyll r...
Dissolved iron distribution in the tropical and sub tropical South Eastern Pacific
Dissolved iron distribution tropical sub tropical South Eastern Pacific
2010/1/15
Dissolved iron (DFe) distributions (<0.2 μm) were determined in the upper water column (0–400 m) of the south eastern tropical and subtropical Pacific, in October–November 2004. Data were collected al...
Iron profiles and speciation of the upper water column at the Bermuda Atlantic Time-series Study site:a model based sensitivity study
Iron profiles speciation upper water column Bermuda Atlantic Time-series Study
2010/1/14
A one-dimensional model of the biogeochemistry and speciation of iron is coupled with the General Ocean Turbulence Model (GOTM) and a NPZD-type ecosystem model. The model is able to simulate the tempo...