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Advances in Integrated Mineralogical, Geochemical, Isotopic and Numerical Modeling Study...
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Advances in Integrated Mineralogical, Geochemical, Isotopic and Numerical Modeling Study of Magmatic-Hydrothermal Systems

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Deposits".

Deadline for manuscript submissions: closed (30 September 2020) | Viewed by 6219

Special Issue Editor

Dr. Paolo Fulignati

E-Mail Website
Guest Editor
Dipartimento di Scienze della Terra, Università di Pisa, via S. Maria, 53, 56126 Pisa, Italy
Interests: petrology and geochemistry of "active" and "fossil" magmatic-hydrothermal systems through a combination of field-based and mineralogical and geochemical methods (i.e., stable isotopes, fluid inclusion investigation); understanding the physicochemical controls that govern the transition from magmatic to magmatic-hydrothermal systems and their implications on the processes of ore formation; study of thermometamorphic and metasomatic processes that take place at the wall of active magma chambers; geothermics

Special Issue Information

Dear Colleagues,

Magmatic-hydrothermal systems are fundamental in driving fluid circulation in the shallow crust and are responsible for convecting large amounts of the Earth’s heat to the surface. At the same time, the development of magmatic-hydrothermal systems plays a key role in several geological processes of great interest for human activities as: (i) Ιt can influence the dynamic of volcanic eruptions; (ii) it is at the base of the genetic processes that lead to the formation of hydrothermal ore deposits; and (iii) it strongly conditions the geothermal system development. For these reasons, the investigation of the magmatic–hydrothermal systems is pivotal to comprehend the genetic mechanisms that govern their development and the crucial volcanological, geothermal, and ore genesis implications.

Magmatic-hydrothermal systems are physically, chemically, and geometrically very complex. As a consequence, their study necessarily requires a multidisciplinary integrated approach, which can give useful constraints for the reconstruction of robust conceptual models concerning their formation.

The present Special Issue aims to collect articles covering various aspects of recent scientific advances focused on active and fossil magmatic-hydrothermal systems, including mineralogical, geochemical, isotopic, and numerical modeling approaches. Papers presenting multidisciplinary integrated investigations will be particularly welcomed.

Dr. Paolo Fulignati
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • magmatic hydrothermal systems
  • mineralogy
  • geochemistry
  • isotopes
  • numerical modeling
  • integrated investigation

Published Papers (2 papers)

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Research

31 pages, 4108 KiB  
Article
Submarine Hydrothermal Discharge and Fluxes of Dissolved Fe and Mn, and He Isotopes at Brothers Volcano Based on Radium Isotopes
by René Neuholz, Charlotte Kleint, Bernhard Schnetger, Andrea Koschinsky, Patrick Laan, Rob Middag, Sylvia Sander, Janis Thal, Andreas Türke, Maren Walter, Rebecca Zitoun and Hans-Jürgen Brumsack
Minerals 2020, 10(11), 969; https://doi.org/10.3390/min10110969 - 29 Oct 2020
Cited by 10 | Viewed by 3501
Abstract
Hydrothermal venting is an important transfer process of energy and elements between the Earth’s solid material and the oceans. Compared to mid-ocean-ridge hydrothermal vent fields, those at intra-oceanic island arcs are typically in shallower water depth and have a more variable geochemical fluid [...] Read more.
Hydrothermal venting is an important transfer process of energy and elements between the Earth’s solid material and the oceans. Compared to mid-ocean-ridge hydrothermal vent fields, those at intra-oceanic island arcs are typically in shallower water depth and have a more variable geochemical fluid composition. Biologically essential trace elements (such as Fe and Mn) are generally elevated in fluids of both deep and shallow hydrothermal vent fields, while vents at shallower water depth influence the photic zone more directly and thus are potentially more relevant for marine primary productivity. However, fluid flux estimations of island arc hydrothermal systems into the surrounding water column are scarce. This study (I) presents a method based on short-lived radium isotopes to estimate submarine hydrothermal discharge (SHD), (II) applies this method at Brothers volcano in the southern Kermadec arc, located northeast of New Zealand, and (III) gives dissolved Fe, Mn and He isotope flux estimates for the Earth´s longest intra-oceanic island arc, the Kermadec arc. The comparison between measured inert He isotope concentrations in the plume with calculated concentrations based on Ra isotopes matched reasonably well, which supports the use of a Ra-based discharge model. Overall, this study represents a novel approach to assess fluid and thus trace element fluxes from one hydrothermal vent field, which can be applied in future studies on various hydrothermal systems to improve geochemical models of element cycling in the ocean. Full article
(This article belongs to the Special Issue Advances in Integrated Mineralogical, Geochemical, Isotopic and Numerical Modeling Study of Magmatic-Hydrothermal Systems)
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14 pages, 2917 KiB  
Article
U–Pb Dating and Trace Element Composition of Zircons from the Gujiao Ore-Bearing Intrusion, Shanxi, China: Implications for Timing and Mineralization of the Guojialiang Iron Skarn Deposit
by Ze-Guang Chang, Guo-Chen Dong and Alireza K. Somarin
Minerals 2020, 10(4), 316; https://doi.org/10.3390/min10040316 - 31 Mar 2020
Cited by 3 | Viewed by 2325
Abstract
The Gujiao ore field, located in the middle segment of the Lüliang Mountain in central North China Craton (NCC), is one of iron skarn deposits of western iron belt in China. The U–Pb dating results of zircon by LA-ICP-MS suggest that the ore-related [...] Read more.
The Gujiao ore field, located in the middle segment of the Lüliang Mountain in central North China Craton (NCC), is one of iron skarn deposits of western iron belt in China. The U–Pb dating results of zircon by LA-ICP-MS suggest that the ore-related monzonite from the Guojialiang deposit was formed at 129.7 ± 1.7 Ma, early Cretaceous, which is consistent with the timing of iron skarn deposits in the Handan–Xingtai district of western iron belt. The zircons of monzonite present notable positive Ce anomalies (Ce/Ce* = 23.38–45.85), high Ce4+/Ce3+ values (154–385) and relatively high oxygen fugacity (fO2 = −13.09 to −15.36), and yield relatively low Ti-in-zircon temperatures. The physico-chemical conditions of the Guojialiang deposit were quite similar to these of ore-bearing plutons in the Handan-Xingtai district. The ore-bearing magmas are derived from the enriched lithospheric mantle with crustal material contribution, which played key role in oxidation state of the magma and the iron mineralization in the western iron belt. Full article
(This article belongs to the Special Issue Advances in Integrated Mineralogical, Geochemical, Isotopic and Numerical Modeling Study of Magmatic-Hydrothermal Systems)
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