Barbara I. Kleine

Gold mobility in subduction zones, the slab perspective

Clifford Patten, Alexandre Peillod, Simon Hector, Barbara I. Kleine et autres

Abstract Arc environments are locally gold-endowed and it has been long hypothesized that gold mobilization during slab dehydration could affect mantle composition and arc Au-fertility. Here, we determine gold mobility during prograde high pressure-low temperature metamorphism of both metavolcanic and metasedimentary rocks …

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Fluid flow in foreland basins: spatial and temporal scaling of their transport mechanisms

Lisa Lebrun, Barbara I. Kleine, Daniel Koehn

Foreland basins often host important ore deposits (like MVT deposits; Bradley and Leach, 2003) which are associated with deep and shallow fluid circulation. Those fluids, expelled from the orogen, can have different origins like meteoric water, diagenetic fluid, metamorphic fluid or even …

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Tectono-magmatic controls on fluid flow in a detachment-related porphyry system: Insights from magnetic petrofabric analyses at the Maronia deposit, NE Greece

Elisa Toivanen, William Raymond McCarthy, Daniel Koehn, Barbara I. Kleine

The circulation of magmatic-hydrothermal fluids along crustal-scale fault systems plays a fundamental role in the formation of porphyry-type ore deposits, as these structures control magma emplacement, fluid pathways, and associated rock alteration. In the Rhodope magmatic-metallogenic belt of northern Greece, numerous Oligocene-Miocene …

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Carbon gradients as tracers of structurally controlled fluid flow in homogeneous metabasaltic sills (Loch Stornoway, Scottish Highlands).

Yessica González-Ixta, Barbara I. Kleine, Alasdair Skelton, Daniel Koehn

In the past decades, the extent of fluid-induced reaction halos in metabasaltic sills within the Argyll Group of the Dalradian Supergroup in the SW Scottish Highlands has been intensively used to constrain metamorphic fluid flow velocities (Skelton, 2011). However, recent findings revealed …

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Linking Hydrothermal Processes to Trace Metal Variations in Pyrite from Geothermal Systems in Iceland

Nico K. Müller, Barbara I. Kleine, Martin John Whitehouse, Heejin Jeon et autres

Pyrite is the most widespread sulfide mineral in hydrothermal and geothermal systems. Its geochemistry records changes in fluid and precipitation conditions and therefore provides a valuable tool for investigating hydrothermal processes. Sulfide mineralization and sulfide trace element compositions are controlled by fluid …

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Gold mobility in subduction zones, the slab perspective

Clifford G. C. Patten, Alexandre Peillod, Simon Hector, Barbara I. Kleine et autres

Carbon Isotope and Abundance Systematics Reveal an Insignificant Crustal Sink of Mantle‐Derived CO 2 in On‐Land Rift Zone Geothermal Systems

Barbara I. Kleine, Maud J. Smit, Diego I. Toro Vivanco, Émilie Thomassot et autres

Abstract Rift zones, both on land and submarine, are key pathways for mantle‐derived CO 2 degassing to the Earth's surface. Fixation of CO 2 as carbonates plays a critical role in regulating these emissions. This study examines carbon abundance and isotope compositions …

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Modeling seawater-basalt interaction at 10–100 °C: Controlling parameters and effects on the composition of the oceanic crust and seawater

Simon Prause, Barbara I. Kleine, Tobias B. Weisenberger, Andri Stefánsson

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Heterogeneous trace element deposition from an effusive volcanic plume

Laura Wainman, Evgenia Ilyinskaya, Melissa Anne Pfeffer, Celine L. Mandon et autres

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Pyrite growth during slab subduction: implications for S flux

Alexandre Peillod, Clifford Patten, Kirsten Drüppel, Aratz Beranoaguirre et autres

Mobility of S in subduction zones is complex with far reaching impacts on the formation of large hydrothermal ore deposits in arc environments, volcanic S emissions into the atmosphere potentially impacting the Earth’s climate, S transfer into the mantle via the subducting …

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The trace metal flux during the utilization of geothermal fluid in rift settings: Nesjavellir, SW Iceland

Iwona Monika Galeczka, Jóhann Gunnarsson Robin, Barbara I. Kleine, Andri Stefánsson

Magma Degassing vs. Host Rock Leaching – Unravelling the Sources of Sulfur in Geothermal Systems

Barbara I. Kleine, Clifford Patten, Andri Stefánsson, Anette Kærgaard Mortensen