Journal ArticleDOI
The geochemical cycle of rhenium: a reconnaissance
Debra Colodner,Julian P. Sachs,Gregory E Ravizza,Karl K. Turekian,John M. Edmond,Edward A. Boyle +5 more
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TLDR
Rhenium (Re) is one of a suite of elements (including uranium and molybdenum) that display conservative behavior in seawater and are enriched in anoxic sediments as discussed by the authors.About:
This article is published in Earth and Planetary Science Letters.The article was published on 1993-05-01. It has received 245 citations till now. The article focuses on the topics: Anoxic waters & Seawater.read more
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Journal ArticleDOI
Geochemistry of Recent oxic and anoxic marine sediments: Implications for the geological record
TL;DR: In this article, the authors examined the distribution of minor and trace elements in marine sediments and provided forensic tools for determining the redox conditions of the bottom waters at the time of deposition.
Journal ArticleDOI
The geochemistry of redox sensitive trace metals in sediments
TL;DR: In this paper, the authors analyzed the redox sensitive elements V, Mo, U, Re and Cd in surface sediments from the Northwest African margin, the U.S. Northwest margin and the Arabian Sea to determine their response under a range of redox conditions.
Journal ArticleDOI
The trace metal content of recent organic carbon-rich sediments; implications for Cretaceous black shale formation
TL;DR: In this article, the authors compared the upwelling and anoxic environments of the C/T black shales and sapropels and concluded that the major driving force for the widespread occurrence of these shales seems to be the increase in volcanic activity and associated CO2-input throughout the Cretaceous.
Journal ArticleDOI
Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition
TL;DR: In this article, the authors present sedimentary Re and Mo data from box-and multi-cores spanning a range of redox conditions, from well-oxygenated sites to locations with substantial sulfide concentrations.
Book ChapterDOI
Trace Elements in River Waters
TL;DR: In this article, the authors reviewed the recent literature on trace elements in rivers, in particular by incorporating the results derived from recent ICP-MS measurements, and the basic questions which they want to address are the following: What are the trace element levels in river waters? What controls their abundance in rivers and fractionation in the weathering+transport system?
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Journal ArticleDOI
Geochemistry of the Amazon: 2. The influence of geology and weathering environment on the dissolved load
TL;DR: In the Amazon Basin, substrate lithology and erosional regime (seen in terms of transport-limited and weathering-limited denudation) exert the most fundamental control on the chemistry of surface waters within a catchment.
Journal ArticleDOI
The supply and accumulation of silica in the marine environment
TL;DR: For example, the accumulation of biogenic silica in estuarine deposits removes a maximum of 8 × 1014g SiO2/yr or 10% of the dissolved silica input to the oceans as mentioned in this paper.
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Pyritization of trace metals in anoxic marine sediments
TL;DR: In this paper, the pyritization of reactive trace elements in different anoxic marine sediments was investigated to determine the importance of factors such as reactive-Fe, pyrite content and salinity in controlling this process.
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Ocean anoxia and the concentrations of molybdenum and vanadium in seawater
Steven Emerson,Sarah S. Huested +1 more
TL;DR: In this paper, the authors investigate the geochemistry of these metals by interpreting measurements from anoxic basins and sediment porewaters, and they estimate that the area of ocean sediment at present overlain by anoxic and near-anoxic water is accumulating 25 ± 15% and 8 ± 5% of the river influx of Mo and V, respectively.
Journal ArticleDOI
Early diagenesis in differing depositional environments: The response of transition metals in pore water
TL;DR: In this article, the cycling of Fe, Mn, Ni, Co, Cu, Cr, V, and Mo during early diagenesis was investigated in sediments from five different depositional environments in the California Borderland.