 | | Journal (article/letter/editorial) | | 421 218 65406 MA ABSTRACT D Circulation of hydrothermal fluids within the oceanic crust is a major factor...massive sulfide have been reported along the mid-ocean ridges, showing AC CE effective mass transfer...at 250°C and 400 bars that placed an H2S-rich hydrothermal fluid into contact with four different rock...desilicification, resulting in NU andradite formation. The stability field of sulfide in the H2-H2S activity...plane is diminished due to the prevalence of andradite in hydrothermally reacted MA troctolite and |  | Luhmann, Andrew J., Tutolo, Benjamin M., Bagley, Brian C., Mildner, David F.R., Scheuermann, Peter P., Feinberg, Joshua M., Ignatyev, Konstantin, Seyfried, William E. (2017) Chemical and physical changes during seawater flow through intact dunite cores: An experimental study at 150–200 °C. Geochimica et Cosmochimica Acta, 214. 86-114 doi:10.1016/j.gca.2017.07.020 | Journal (article/letter/editorial) | | hydrogen, permeability, fluid-rock reaction, Lost City, (ultra) small angle neutron scattering (U)SANS...2016). Serpentinization in ultramafic-hosted hydrothermal systems can produce relatively cool and alkaline...The Lost City hydrothermal field, which was discovered in 2001, ≈ 15 km from the MidAtlantic Ridge at...carbonate chimneys that rise up to 60 m above the ocean floor (Früh-Green et al., 2003; Kelley et al., 2005)...documented complex heterogeneities of mass transfer during alteration of the Atlantis Massif (oceanic core |  | Python, Marie, Ceuleneer, Georges, Ishida, Yoshito, Barrat, Jean-Alix, Arai, Shoji (2007) Oman diopsidites: a new lithology diagnostic of very high temperature hydrothermal circulation in mantle peridotite below oceanic spreading centres. Earth and Planetary Science Letters, 255 (3) 289-305 doi:10.1016/j.epsl.2006.12.030 | Journal (article/letter/editorial) | | lithology diagnostic of very high temperature hydrothermal circulation in mantle peridotite below oceanic...amounts of forsterite (Fo N 0.95) or traces of andradite. When not deformed, the diopsides are automorphic...lower oceanic crust: Thermodynamic models of hydrothermal alteration, J. Geophys. Res. 103 (B1) (1998)...boundary between the fields of magmatic and hydrothermal crystallisations. © 2007 Elsevier B.V. All rights...spreading centres in the late seventies [2,3] hydrothermal circulation of seawater in the oceanic crust |  | Halama, Ralf, Savov, Ivan P., Garbe-Schönberg, Dieter, Schenk, Volker, Toulkeridis, Theofilos (2013) Vesuvianite in high-pressure-metamorphosed oceanic lithosphere (Raspas Complex, Ecuador) and its role for transport of water and trace elements in subduction zones. European Journal of Mineralogy, 25 (2) 193-219 doi:10.1127/0935-1221/2013/0025-2281 | Journal (article/letter/editorial) | | high-pressure-metamorphosed oceanic lithosphere (Raspas Complex, Ecuador) and its role for transport of water and...occur in serpentinised peridotites of the Raspas Complex (Ecuador), which represents a piece of oceanic...LREE enrichments (LaN/SmN ¼ 1.2–5.5) point to hydrothermal alteration of the peridotite precursor rocks...gabbros and troctolites. Vesuvianite in the Raspas Complex formed by hydration and silica removal from gabbroic...subduction, vesuvianite, oceanic lithosphere, Raspas Complex, serpentinite, trace elements, fluid-rock interaction |  | | Journal (article/letter/editorial) | | partially disordered graphite), calcite, magnetite, andradite/hydroandradite, prograde olivine, brucite and...Tethyian seafloor, mediated by fluids sourcing from hydrothermal vents. Thermodynamic modelling suggests that...mineralizations of the adjacent Mt. Avic ultramafic massif (ore deposits of Lago Gelato, Ussel, and Valmeriana;...serpentinites of the Western Alps (e.g., Lanzo Massif, Kaczmarek & Müntener, 2008 and references therein;...serpentinites and by Gahlan et al. (2006) in the hydrothermal deposit of Bou Azzer (Morocco). Enrichments |  | | Journal (article/letter/editorial) | | result in the formation of magnetite either. A hydrothermal serpentinization experiment PT using lherzolite...off-axis serpentinization systems in the Hadean Ocean represent a likely venue for the emergence of life...Seyfried (2003), which investigated the NU hydrothermal alteration of distinct ultramafic protolith...hydroxyltopaz, huntite, wüstite, grossular and andradite. While calcite has been found in abyssal serpentinite...fillings indicative of mixing processes involving hydrothermal fluid and seawater, or as a replacement mineral |  | | Journal (article/letter/editorial) | | online 14 November 2008 Keywords: Metasomatism Hydrothermal processes Serpentinite Rodingite Fluid–rock...mineralogical variability within rodingites from the ocean floor is mainly driven by steep activity gradients...Seyfried et al., 2007). Such fluids are known from mid-ocean ridge settings (Kelley et al., 2001; Kelley et al...of mass transfer may be reversed (i.e., Ca may be lost from the rock). These processes make it difficult...situation is less complicated in rodingites from mid-ocean ridge settings, because the composition and state |  | | Journal (article/letter/editorial) | | China Craton: mantle wedge metasomatism during ocean–continent convergence Chao-Nan Hu & M Santosh To...China Craton: mantle wedge metasomatism during ocean–continent convergence, International Geology Review...China Craton: mantle wedge metasomatism during ocean–continent convergence Chao-Nan Hu a and M Santosha... K, La, and Ce with relative depletion of high field strength elements like Nb, Ta, Zr, and Hf in the...from rodingitized hornblende gabbro in Sandaogou complex show a wide range of ages as 412 Ma, 398 Ma, 383 |  | | Journal (issue) | | a nd tech nology through annua l con ferences, field trips, invi ted lectu res, and publ ish ing. Membersh...shifted the goal posts on the economic playing field, pushing clean hydrogen technologies further to...extra-terrestrial samples. His research in the field of magnetism and microscopy has been recognized...paywall is one of the only choices. It results in a complex system around OA. This scheme tends to spread across...shields, (2) serpentinized ultramafic rocks at mid-ocean ridges and wi thin land-based ophiolite-peridotite |  | Cannaò, E., Scambelluri, M., Bebout, G.E., Agostini, S., Pettke, T., Godard, M., Crispini, L. (2020) Ophicarbonate evolution from seafloor to subduction and implications for deep-Earth C cycling. Chemical Geology, 546. 119626pp. doi:10.1016/j.chemgeo.2020.119626 | Journal (article/letter/editorial) | | blueschist-facies ophicarbonates from the Voltri Massif -p (W. Ligurian Alps) and the Queyras (W. Alps)...eclogite-facies re ophicarbonates from the Voltri Massif. The Bracco oceanic ophicarbonates retain breccia-like...lP textures associated with their seafloor hydrothermal and sedimentary origins. Their trace element...C, are best traced by a combination of detailed field and petrographic observations, C, O and Sr isotope...mixed seawater and alkaline hydrothermal fluids (e.g., Lost City hydrothermal fields, FrühGreen et al., |  | | Book | | Hydrothermal Processes and Mineral Systems Hydrothermal Processes and Mineral Systems Franco Pirajno...springer.com To my wife Foreword The Earth is a complex and dynamic system that over 4.5 billion years...resources we depend on. Franco Pirajno’s book ‘‘Hydrothermal Processes and Mineral Systems’’ provides an...the development of life and extraterrestrial hydrothermal systems. Discovery and recovery of mineral resources...variety of water sources that participate in hydrothermal circulation systems (Chapter 1), the alteration |  | Hodel, F., Macouin, M., Triantafyllou, A., Carlut, J., Berger, J., Rousse, S., Ennih, N., Trindade, R.I.F. (2017) Unusual massive magnetite veins and highly altered Cr-spinels as relics of a Cl-rich acidic hydrothermal event in Neoproterozoic serpentinites (Bou Azzer ophiolite, Anti-Atlas, Morocco) Precambrian Research, 300. 151-167 doi:10.1016/j.precamres.2017.08.005 | Journal (article/letter/editorial) | | altered Cr-spinels as relics of a Clrich acidic hydrothermal event in Neoproterozoic serpentinites (Bou Azzer...altered Cr-spinels as relics of a Cl-rich acidic hydrothermal event in Neoproterozoic serpentinites (Bou Azzer...altered Cr-spinels as relics of a Clrich acidic hydrothermal event in Neoproterozoic serpentinites (Bou Azzer...ophiolite, Anti-Atlas, Morocco) allows to assess the hydrothermal processes that prevailed at the ending Precambrian...These results suggest that a Cl-rich acidic hydrothermal event involving temperatures below 350 °C produced |  | Etiope, G., Tsikouras, B., Kordella, S., Ifandi, E., Christodoulou, D., Papatheodorou, G. (2013) Methane flux and origin in the Othrys ophiolite hyperalkaline springs, Greece. Chemical Geology, 347. 161-174 doi:10.1016/j.chemgeo.2013.04.003 | Journal (article/letter/editorial) | | Archani and Ekkara, located in the Othrys ophiolite massif. Portable sensors based on Fourier Transform InfraRed...considered for the origin of abiotic methane in hydrothermal systems. © 2013 Elsevier B.V. All rights reserved...peridotite-hosted CH4 + H2 fluids in hydrothermal mid-ocean ridge systems, where serpentinization (driven...generally above 100–150 °C (Logatchev, Rainbow, and Lost City; Charlou et al., 2002; Proskurowski et al., 2006...lower temperatures imply that high enthalpy hydrothermal systems would not be necessary for abiotic methane |  | Morrill, Penny L., Kuenen, J. Gijs, Johnson, Orion J., Suzuki, Shino, Rietze, Amanda, Sessions, Alex L., Fogel, Marilyn L., Nealson, Kenneth H. (2013) Geochemistry and geobiology of a present-day serpentinization site in California: The Cedars. Geochimica et Cosmochimica Acta, 109. 222-240 doi:10.1016/j.gca.2013.01.043 | Journal (article/letter/editorial) | | marine sediments of the Franciscan Subduction Complex (FSC) below the 28 peridotite body. We propose...the Franciscan Subduction Complex (FSC) (Fig 1). Within this 60 complex, rocks composed of marine sediments...g. zoisite, grossular) or ferric iron 100 (andradite), Ca-silicates are unstable (data shown for 50...of abiogenic hydrocarbons. 109 Experimental hydrothermal reactions at conditions characteristic of serpentinization...ultra-mafic rock-hosted environment of the Lost City Vent 120 Field (Proskurowski et al., 2008). Therefore |  | | Journal (article/letter/editorial) | | HFSE. The mineralization is of hightemperature hydrothermal origin and, although lacking features such as...alkalic minerals or fenitization, may be a distal hydrothermal expression of concealed carbonatitic/alkaline...constructed mercury mass balance for the Arctic Ocean (Outridge et al., 2008) found that atmospheric deposition...important sources (ocean currents, rivers) and there is a large reservoir of mercury in the ocean that could...presentation we focus particularly on the Arctic Ocean and approach these questions by first examining |  | Seewald, Jeffrey S., Reeves, Eoghan P., Bach, Wolfgang, Saccocia, Peter J., Craddock, Paul R., Walsh, Emily, Shanks, Wayne C., Sylva, Sean P., Pichler, Thomas, Rosner, Martin (2019) Geochemistry of hot-springs at the SuSu Knolls hydrothermal field, Eastern Manus Basin: Advanced argillic alteration and vent fluid acidity. Geochimica et Cosmochimica Acta, 255. 25-48 doi:10.1016/j.gca.2019.03.034 | Journal (article/letter/editorial) | | Geochemistry of Hot-Springs at the SuSu Knolls Hydrothermal Field, Eastern Manus Basin: Advanced Argillic Alteration...Geochemistry of Hot-Springs at the SuSu Knolls Hydrothermal Field, Eastern Manus Basin: Advanced Argillic Alteration... Geochemistry of Hot-Springs at the SuSu Knolls Hydrothermal Field, Eastern Manus Basin: Advanced Argillic Alteration...the Bismarck Sea, Papua New Guinea. In 2006, hydrothermal fluids were collected from three areas of submarine...acidic than typically observed in fluids at mid-ocean ridge spreading centers. Late stage addition of magmatic |  | | Journal (article/letter/editorial) | | subducting direction of the Paleo-Southern Tianshan Ocean ZHONG-PING MA, LIN-QI XIA, XUE-YI XU, XIANG-MIN...Tianshan Ocean, which also suggest that the subducting direction of Paleo-Southern Tianshan Ocean is not... and can be approached using pure cultures and field studies of modern analog sites. Sawmill Sink (Abaco...Ceske Budejovice, Czech Republic 3 Oak Ridge National Lab, Oak Ridge, TN 37831, USA 4 University of Leeds...by acid mine drainage (AMD) has been achieved in field passive remediation experiments by the use of limestone |  | | Book | | 20 Metal complexation and ion association in hydrothermal fluids: insights from quantum chemistry and...temperatures and venting salinities at mid-ocean ridge hydrothermal systems T. Driesner 132 Using seafloor...as a tracer to map subseafloor fluid flow in the ocean crust A. T. Fisher and R. N. Harris 142 The potential...organic synthesis and biosynthesis at seafloor hydrothermal systems E. Shock and P. Canovas 161 vi Contents...the oil charge history of the North Sea and UK Atlantic margin. Hanor and Mercer describe the behaviour |  | | Book | | Specialized in fluid inclusions, stable isotopes, hydrothermal alteration and minero-petrographic studies,...exploration, fluid-rock interactions and fluid flow in hydrothermal systems, ore genesis, travertine formation,...modelling of gas-water-rock interactions hydrothermal/geothermal systems, and sites for geological...atmosphere is responsible for global warming and ocean acidification. Carbon capture and storage (CCS) techniques...GCS). Storage options include geological storage, ocean storage, and mineral carbonation [2]. Deep saline |  | Miller, Hannah M., Mayhew, Lisa E., Ellison, Eric T., Kelemen, Peter, Kubo, Mike, Templeton, Alexis S. (2017) Low temperature hydrogen production during experimental hydration of partially-serpentinized dunite. Geochimica et Cosmochimica Acta, 209. 161-183 doi:10.1016/j.gca.2017.04.022 | Journal (article/letter/editorial) | | first life on Earth at lowtemperature off-axis hydrothermal fields (Russell et al., 2010; Russell et al...low-temperature serpentinization which encompass the entire, complex reactions involved in water/rock reactions with...prediction that approximately 1 nanomole of H2 would be lost per day. A similar control experiment was conducted...ratios and Fe coordination states (staurolite, andradite, sanidine and siderite provided and previously...a ~13 mm by 23 mm heterogeneous area shows the complex structure of serpentine intermixed with olivine |  | | Book | | and Platinum in Basic Magmas . . 3.3.3 Bushveld Complex . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . 3.3.5 Sudbury Igneous Complex . . . . . . . . . . . . . . . . . . . . 3.4 Komatiite.... . . . . . . . . . . . . . . . . . . 142 4 Hydrothermal Deposits . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . 4.1 Hydrothermal Veins . . . . . . . . . . . . . . . . . . . . ....and Sandstone-Hosted Uranium Deposits . 4.15 Hydrothermal Systems on the Seafloor (Introduction) . . . |  | Ye, Hui, Wu, Changzhi, Brzozowski, Matthew J., Yang, Tao, Zha, Xiangping, Zhao, Shugao, Gao, Bingfei, Li, Weiqiang (2020) Calibrating equilibrium Fe isotope fractionation factors between magnetite, garnet, amphibole, and biotite. Geochimica et Cosmochimica Acta, 271. 78-95 doi:10.1016/j.gca.2019.12.014 | Journal (article/letter/editorial) | | in rocks, such as retrograde metamorphism and hydrothermal alteration. Keywords: iron isotope, oxygen...Fig. S4; Table S3), implying interaction with hydrothermal fluids; this type of altered amphibole is defined...members – Fe(II)-rich almandine and Fe(III)-rich andradite. Based on the linear trend in Fig. 7b, and taking...magnetite–almandine, where Fe3+/∑Fe is below 0.1. For the andradite end member of garnet, the uncertainty associated...Fe isotope fractionation between magnetite and andradite. 5.4 Comparison of Δ56FeMt–Grt derived by theoretical |  | | Report (issue) | | did it affect climate? How did the atmosphere and ocean compositions change through time, and why? When... Russell and Hall show that low-temperature hydrothermal systems could have constituted simple reactors...reactors in which H2 and CO2 formed acetate, complex organic molecules and even cells (i.e., the emergence...gold, uranium, and sulfur were deposited by hydrothermal fluids after deposition of the conglomerates...deposits, respectively, is best explained by an ocean that lacked widespread, abundant sulfate until at |  | | Journal (article/letter/editorial) | | 2004), and because the altered solids consist of complex, fine-grained mixtures of phases that present challenges...serpentinization reaction is 45 C, in the Lost City hydrothermal field, determined using a hydrogen isotope...system (Wilson et al., 1999) from which CO2 gas was lost by a mechanism that involved a kinetic isotope fractionation...do not form at these low temperatures (e.g., andradite, tremolite, and troilite etc.) or are kinetically...and Sharma, 2005) invoked serpentinization and hydrothermal alteration as sources of atmospheric methane |
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