Articles | Volume 12, issue 8
https://doi.org/10.5194/se-12-1931-2021
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the Creative Commons Attribution 4.0 License.
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https://doi.org/10.5194/se-12-1931-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 Aug 2021
Research article |
| 20 Aug 2021
| 20 Aug 2021
Vectors to ore in replacive volcanogenic massive sulfide (VMS) deposits of the northern Iberian Pyrite Belt: mineral zoning, whole rock geochemistry, and application of portable X-ray fluorescence
Instituto de Geociencias (CSIC-UCM), Madrid, 28040, Spain
Fernando Tornos
Instituto de Geociencias (CSIC-UCM), Madrid, 28040, Spain
Emma Losantos
Instituto de Geociencias (CSIC-UCM), Madrid, 28040, Spain
Juan Manuel Pons
MATSA, Almonaster la Real, Huelva, 21342, Spain
Juan Carlos Videira
MATSA, Almonaster la Real, Huelva, 21342, Spain
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In this study, we conclude that surface weathering is a primary control on rock characteristics and also guides fluids through the system during deep burial process. We also find that the formation of the rock decomposition zone depends on rock composition, climatic conditions and the duration of the process. Finally and most importantly, we provide a workflow for data reliability analysis for paleoclimate research.
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This study evaluates the buffering of seawater oxygen isotopes at midocean ridges, using a process-based model of hydrothermal circulation and reactive transport of oxygen isotopes. The buffering intensity shown by the model is significantly weaker than previously assumed. Oxygen isotopes of oceanic crust are consistently relatively insensitive to seawater isotopic composition, which explains the ancient oceanic crust without invoking a constant seawater oxygen–isotopic composition through time.
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Carbon capture and storage is a technology for the mitigation of industrial CO2 emissions. Most subsurface storage capacity is in rocks for which there is relatively little information. A group of experts estimated the storage capacity of seven units, producing a wide range of estimates for each unit due to a combination of using different published values for some variables and differences in their judgements of average values. Hence, there is significant uncertainty in such estimates.
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Short summary
We performed a detailed study of the rocks surrounding a major Zn–Pb–Cu ore deposit in southwestern Spain in order to characterize the behaviour of chemical elements in the influence area of the hydrothermal system that produced the deposit. Based on this information we propose new ways of detecting the nearby presence of ore deposits of this kind during exploration, thus improving our ability to detect new resources and contributing to securing the future supply of metals for our society.
We performed a detailed study of the rocks surrounding a major Zn–Pb–Cu ore deposit in...
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