Geochemical implications of rare earth element patterns in hydrothermal fluids from mid-ocean ridges

Klinkhammer, Gary P.; Elderfield, Henry; Edmond, John M.; Mitra, Arijeet

doi:10.1016/0016-7037(94)90297-6

Cited by 357 publications

(177 citation statements)

References 45 publications

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“…Sr:Ca incorporation can be influenced not only by the Sr:Ca concentration of the organisms environment, but also by environmental temperature (Bath et al, 2000;Elsdon and Gillanders, 2002;Richardson et al, 2004) and, at least for molluscs, growth rate (Stecher et al, 1996;Carr6 et al, 2006). Contrary to the results in the present study, Rio et al (1992) Nd and Gd data within this study make it difficult to assess whether they display the Eu anomaly that is indicative of rare earth element concentrations in hydrothermal fluids (Klinkhammer et al, 1994).…”

Section: -Th25contrasting

confidence: 83%

“…Ba, Sr, and Mn otolith concentrations in particular appear to be dictated more by habitat water chemistry than environmental or physiological factors such as salinity or fish growth rates (Martin & Thorrold, 2005;Walther & Thorrold, 2006); though the linkages between fish environment and otolith composition are complex and not fully understood. Klinkhammer et al, 1994 Blank boxes indicate the data were not measured or reported as part of the study.…”

Section: Introductionmentioning

confidence: 99%

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Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise

Buckman¹

2009

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A study of the ecology of fish endemic to hydrothermal vents on the East Pacific Rise was undertaken utilizing a variety of techniques, focusing on the bythitid Thermichthys hollisi. Stable isotope and gut content analyses were used to elucidate prey choice and trophic relationships. Otolith chemical signatures were investigated to determine whether this technique could be utilized to examine life history strategy and habitat use. Chemical characteristics of preferred fish habitat and gene expression responses habitat chemistry were explored. Gut contents indicated that T. hollisi specimens were actively feeding upon a combination of brachyuran crabs, Alvinocaris shrimp, polychaetes, and zoarcid fish with the majority of fish containing evidence of crustacean prey. Carbon, nitrogen, and sulfur stable isotopic measurements support a chemosynthetically based prey source and place T. hollisi in the uppermost trophic levels of vent communities. The influence of exposure to hydrothermal fluids was apparent in otoliths from both species of vent fish, most noticeably within the relatively elevated Sr:Ca and depleted Mg:Ca ratios. Otolith chemistry suggested that the zoarcid Thermarces cerberus experiences greater direct exposure to diffuse fluids than does T. hollisi, which is concurrent with apparent habitat preferences. Isotopic patterns across the span of the otolith suggested that T. cerberus spends its entire life within the vent system. In contrast, it appeared that T. hollisi exists outside of the influence of hydrothermal activity for some early portion of its life-cycle. Time-lapse photography and in situ electrochemistry indicated that T. hollisi are preferentially utilizing fish holes where there are elevated temperatures and sulfide levels, and variable oxygen levels in comparison to ambient bottom water. A fragment of Cu, Zn superoxide dismutase was successfully amplified from T. hollisi mRNA, but there were no differences in expression levels between tissue types or among individuals within the small sample examined. In general, it appears that T. hollisi is both influenced by and may exert a greater influence on hydrothermal vent communities to a greater degree than initially hypothesized.Thesis Supervisor: Timothy M. Shank Title: Associate Scientist, Biology Department, Wood Hole Oceanographic Institution Ackiowledgements This thesis could not have been accomplished without the support of a variety of people who have been there for me both personally and professionally throughout the past six years. My advisor, Tim, has provided me with innumerable opportunities to expand my horizons, and has always allowed me the freedom to pursue my own interests, even if the road I wanted to go down was not what many would have viewed as the logical choice. When he realized that yes, I really only wanted to work on fish, he helped make that dream a reality. He and the rest of my committee: Simon, Mark, Leona, and George, have always been helpful, supportive, and willing to answer any questions that I might ha...

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Section: -Th25contrasting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise

Buckman¹

2009

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“…31 (Tables 3 and 4), close to chondritic values and lack the linear correlation between Y/Ho and La anomaly characteristic of modern seawater signatures (e.g., Bau, 1996;Webb and Kamber, 2000;Allwood et al, 2010;Franchi et al, 2015). Deep fluids, including hydrothermal fluids, have higher concentrations of REE compared to seawater and chondritic Y/Ho ratios (e.g., Klinkhammer et al, 1994;Bau and Dulski, 1999). Venting of deepseated fluids may therefore induce a Y/Ho near-chondritic ratio coupled with SREE enrichment and sensible increase of LREE contents (e.g., Michard, 1989;Klinkhammer et al, 1994;Bau and Dulski, 1999).…”

Section: Isotopic Composition Of Carbonates and Origin Of Mineralizinmentioning

confidence: 71%

“…Klinkhammer et al, 1994;Bau and Dulski, 1999). Y and Ho are considered chemical twin and therefore are expected to have a similar geochemical behavior in seawater (e.g., Zhang et al, 1994;Bau, 1996;Nozaki et al, 1997).…”

Section: Isotopic Composition Of Carbonates and Origin Of Mineralizinmentioning

confidence: 99%

“…Deep fluids, including hydrothermal fluids, have higher concentrations of REE compared to seawater and chondritic Y/Ho ratios (e.g., Klinkhammer et al, 1994;Bau and Dulski, 1999). Venting of deepseated fluids may therefore induce a Y/Ho near-chondritic ratio coupled with SREE enrichment and sensible increase of LREE contents (e.g., Michard, 1989;Klinkhammer et al, 1994;Bau and Dulski, 1999). Rovere et al (2014) performed AMS radiocarbon age dating on chemosymbiotic bivalves collected from the very shallow sediments of the Paola Ridge (alongside diapirs D1 and D2, down to about 1 m below the seafloor) revealing calibrated age ranging between 440 BP and 13,710 BP suggesting a prolonged seepage activity.…”

Section: Isotopic Composition Of Carbonates and Origin Of Mineralizinmentioning

confidence: 99%

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Authigenic minerals from the Paola Ridge (southern Tyrrhenian Sea): Evidences of episodic methane seepage

Franchi

Rovere

Gamberi

et al. 2017

Marine and Petroleum Geology

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a b s t r a c tPaola Ridge, along the NW Calabrian margin (southern Tyrrhenian Sea), is one of the few reported deep sea sites of precipitation of authigenic carbonates in the Tyrrhenian Sea. Here, the changing composition of the seeping fluids and the dynamic nature of the seepage induced the precipitation of pyrite, siderite and other carbonate phases. The occurrence of this array of authigenic precipitates is thought to be related to fluctuation of the sulfate-methane transition zone (SMTZ).Concretions of authigenic minerals formed in the near sub-bottom sediments of the Paola Ridge were investigated for their geochemical and isotopic composition. These concretions were collected in an area characterized by the presence of two alleged mud volcanoes and three mud diapirs. The mud diapirs are dotted by pockmarks and dissected by normal faults, and are known for having been a site of fluid seepage for at least the past 40 kyrs. Present-day venting activity occurs alongside the two alleged mud volcanoes and is dominated by CO 2 -rich discharging fluids. This discover led us to question the hypothesis of the mud volcanoes and investigate the origin of the fluids in each different domed structure of the study area.In this study, we used stable isotopes (carbon and oxygen) of carbonates coupled with rare earth element (REE) composition of different carbonate and non-carbonate phases for tracing fluid composition and early diagenesis of authigenic precipitates. The analyses on authigenic precipitates were coupled with chemical investigation of venting gas and sea-water.Authigenic calcite/aragonite concretions, from surficial sediments on diapiric structures, have depleted values. The siderite REE pattern shows consistent LREE (light REE) fractionation, MREE (medium REE) enrichment and positive Gd and La anomalies. As shown by the REE distribution, the 13 C-depleted composition and their association with chemosymbiotic fauna, calcite/aragonite precipitated at time of moderate to high methane flux close to the seafloor, under the influence of bottom seawater. Authigenic siderite, on the other hand, formed in the subseafloor, during periods of lower gas discharges under prolonged anoxic conditions within sediments in equilibrium with 13 C-rich dissolved inorganic carbon (DIC) and 18 O-rich water, likely related to methanogenesis and intermittent venting of deep-sourced CO 2 .

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Tectonic structure, lithology, and hydrothermal signature of the Rainbow massif (Mid-Atlantic Ridge 36°14′N)

Andréani

Escartı́n

Delacour

et al. 2014

Geochem. Geophys. Geosyst.

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Rainbow is a dome-shaped massif at the 36 14 0 N nontransform offset along the Mid-AtlanticRidge. It hosts three ultramafic-hosted hydrothermal sites: Rainbow is active and high temperature; Clamstone and Ghost City are fossil and low temperature. The MoMARDREAM cruises (2007, 2008) presented here provided extensive rock sampling throughout the massif that constrains the geological setting of hydrothermal activity. The lithology is heterogeneous with abundant serpentinites surrounding gabbros, troctolites, chromitites, plagiogranites, and basalts. We propose that a W dipping detachment fault, now inactive, uplifted the massif and exhumed these deep-seated rocks. Present-day deformation is accommodated by SSW-NNE faults and fissures, consistent with oblique teleseismic focal mechanisms and stress rotation across the discontinuity. Faults localize fluid flow and control the location of fossil and active hydrothermal fields that appear to be ephemeral and lacking in spatiotemporal progression. Markers of high-temperature hydrothermal activity (350 C) are restricted to some samples from the active field while a more diffuse, lower temperature hydrothermal activity (<220 C) is inferred at various locations through anomalously high As, Sb, and Pb contents, attributed to element incorporation in serpentines or microscalesulfide precipitation. Petrographic and geochemical analyses show that the dominant basement alteration is pervasive peridotite serpentinization at 160-260 C, attributed to fluids chemically similar to those venting at Rainbow, and controlled by concomitant alteration of mafic-ultramafic units at depth. Rainbow provides a model for fluid circulation, possibly applicable to hydrothermalism at oceanic detachments elsewhere, where both low-temperature serpentinization and magmatic-driven high-temperature outflow develop contemporaneously, channeled by faults in the footwall and not along the detachment fault.

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Geochemical implications of rare earth element patterns in hydrothermal fluids from mid-ocean ridges

Cited by 357 publications

References 45 publications

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise

Authigenic minerals from the Paola Ridge (southern Tyrrhenian Sea): Evidences of episodic methane seepage

Tectonic structure, lithology, and hydrothermal signature of the Rainbow massif (Mid-Atlantic Ridge 36°14′N)

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