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| Fe-Mn OXIDES IN THE HYDROTHERMAL SEDIMENTS OF THE RED SEA DEEPS SYSTEM N U R IT T A IT E L -G O LD M A N...Negev, Beer-Sheva, Israel 2 AbstractâDeep sediments from the Red Sea have been studied extensively and provide...comparing the Fe-Mn oxyhydroxides from the southern Atlantis II, Chain A, Chain B, and Discovery Deeps, using...hydrothermal sediments of the SW basin in the Atlantis II Deep, indicating sub-bottom connections between...Although some of the sediments of the Discovery Deep show a similar trend; shortrange ordered, rounded |
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| BASE METAL CONTENT IN A CORE FROM THE ATLANTIS II DEEP, RED SEA * R.H. CARWlLE and G. FAURE Department...base metal content in a core from the Atlantis II deep, Red Sea. Chem. GeoL, 8: 15-23. The isotope composition...sediment samples of core 128P from the Atlantis II deep of the Red Sea appears to be very nearly constant...samples have significantly lower 87Sr/a6Sr ratios than sea water, which suggests that the sediment was precipitated...occurrence of hot brines and base metal deposits in the Red Sea has been described in great detail in a book edited |
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| piston coresfrom the heavy metal depositsin the Atlantis II Deep indicatesthat the facies exhibit considerablygreater...was discoveredin the southwesternpart of the Atlantis II Deep. Nine of the cores bottomed in basaltic bedrock...the Atlantis II Deep of 25,000years. The lowermostunit in the deep is representedby normal Red Sea carbonatesediments...carbonatesediments. Carbonatesedimentation in the Atlantis II Deep was continuousfrom 25,000 to 12,900 years...geothermalactivity. Continuous geothermalactivity in the Atlantis II Deep beganapproximately12,900yearsago, and is continuingtoday |
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| balances in metalliferous deposits from the Atlantis II Deep, Red Sea PIERRE ANSCHLITZ * Centre de Gdochimie...species within the sedimentary series of the Atlantis II Deep, we have examined the chemical composition...during the last 2,250 years. Assuming that a Salton Sea-like solution supplies all the Fe contained in the...processes acting in the brine system of the Atlantis II Deep. 1. INTRODUCTION 1969; Hackett and Bischoff...sinks, and fluxes of sedimentary material. The Atlantis II Deep is a dynamic system with mineral precipitation |
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| isotopes and REE analyses of five cores of the Red Sea: An insight into hydrothermal input M.-C. Pierret...Montpellier Cedex 05, France The formation of the Red Sea was initiated by the separation of the Arabian...and interstitial waters from five cores of the Red Sea sampled during the RedSed cruise in september 1992...from four deeps located on the axial graben (Atlantis II, Thetis, PortSoudan and Suakin), and one at 10...interstitial waters show values similar to those deep water of each site. They are equilibrated with the |
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| geothermometry and origin of smectites in the Atlantis II Deep, Red Sea T.G. Cole Applied Geochemistry Research...brine pool of the Atlantis II Deep, a localised area of geothermal activity in the Red Sea, comprise a diversity...three cores from the Southwest Basin of the Atlantis II Deep, of the present study, three smectites comprising...[12]) and the temperature of the brine pool in the Deep (about 50-60°C [13,14]). The nontronite formation...focussed on 1. Introduction T h e A t l a n t i s II D e e p is o n e o f s e v e r a l l o c a l i s |
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| metalliferous and calcareous pelitic sediments of the Red Sea axial trough A. Baumann Zentrallaboratorium fiir...in the axial graben zone of the Red Sea outside the Atlantis II Deep. Hydrothermal metal-rich precipitates...both the normal and hydrothermal sediments of the Red Sea lies within narrow limits, with less variation...Pb isotopes. The Sr-isotope composition of the Red Sea graben sediments is mainly controlled by seawater...brines and metalliferous sediments in the central Red Sea (Miller 1964; Swallow and Crease 1965; Miller et |
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| ~2bersetzung). Suakin Deep: Brines and hydrothermal sediments in the deepest part of the Red Sea*) By ALBRECHTBALrMANN...Westbeeken stark erhSht. Abstract The sea floor of the Red Sea declines in two steps to the Suakin-graben...the area of the Suakin Deep. The western step is occupied by the Suakin Deep-Sea Plain with detrital-organogenic...L k.Y-'.ff.,~ , / A. BAUMANNet al. - - Suakin Deep: Brines and hydrothermal sediments The sediments...the W-Basin. R6sum6 Dans la r6gion du <Deep>> le fond de la Mer Rouge descend en deux marches |
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| a natural goethite sample from the Atlantis II Deep in the Red Sea. These results suggest that goethite...nonstoichiometric water (2.4 wt.%) m 6c-2-2 â â II I â II * 110-7-l â II hb I 43 b6 b5 46 k9 50 51 94 99 100 102...twenty-four natural goethite samples and one manganite sample are listed in Table 2. Hydrogen data were...a marine goethite sample from the Atlantis II Deep in the Red Sea. The only other marine sample in Table...sample composed largely of manganite. It is also from the Atlantis II Deep and is discussed later in this |
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| NG-MRWls-1 II NG-MCKan- 1 I, ,I NG-SConn-1 NG-WConn-1 NG-SConn-2 II NG-PPColo-1 II ,, II NG-MFâCUtah-1 II II...II 11 $1 NG-AtIIRS-1 I, II 11 NMn-AtInS-1 II I, NGLCEoS-1 NGSNH-1 NG-HRCAus-1 NG-NMieh-1 NG-IMich-1 NG-BAla-1...Ansly~cs Temperature, Content of Selected Manganite-Rich Hole and Sample High Goethite Water...Apparent ohnfn.-R~0~ From Values Estimated En-J. iI*0 Sample 60 value -153 -202 -159 -146 -136 -138...dependency of (Y. The variance of 60 values for the manganite-rich sample is negligible (see Table 2). For constant |
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| S0016-7037(00)00486-5 Geochemical dynamics of the Atlantis II Deep (Red Sea): II. Composition of metalliferous sediment...26, 2000) AbstractâThe Atlantis II Deep is an axial depression of the Red Sea filled with highly saline...mainly the reduction of Mn-oxide with dissolved Fe(II), the recrystallization of primary oxide minerals...1995). New brines have supplied intermittently the deep and have changed the thickness of the brine pool...pool (BaÌcker and Richter, 1973). The Atlantis II Deep is an active hydrothermal system, as demonstrated |
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| A. BAUMANNet al. - - Suakin Deep: Brines and hydrothermal sediments SCHOELL, M., âą HARTMANN, M.: Detailed...structure of the hot brines in the Atlantis II Deep area (Red Sea). - - Marine Geol., 14 (1), 1--14,...rezente hydrothermal-sedimentlire Lagerstiitte Atlantis-II-Tief im Roten Meer Von HABALDBXCKEBund HELMUTRICHTER...befindliehe hydrothermal-sedimentare Lagerst~itte Atlantis-II-Tief im Roten Meer wurde in den Jahren 1969,...cher Ausf~illung beobachten. Abstract The Atlantis II Deep, a hydrothermal-sedimentary metal deposit |
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| SulfurIsotopeComposition, andAccumulation Ratesof Red SeaGeothermalDeposits W^ŸNE C. Sâą^âą:s III ^âąrâą J^taEs...studies of metalliferous sediments from the Atlantis II Deep reveal a variable history of hot brine activity...Radiocarbondating indicatesthat sedimentation beganin the deep about 28,000 yrs ago. The lowermostunit (DOP) consistsmainly...brine activity began in the west basin of the Atlantis II Deep about 15,000yrs ago with depositionof the...variationsto providefurther insightsinto the Tâą Red Sea geothermalsystem and associated ore-formingprocessthroughoutthe |
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| fluids and the evolution of the Atlantis II deep hydrothermal system, Red Sea: Strontium isotope study PIERRE...Abstract-Atlantis II is the largest and most mineralized of the deeps along the axis of the Red Sea spreading...They are close to what is found for the present-day deep brine pool (0.707105, 45.10 ppm). The strontium...concentration and the 87Sr/8bSrratio of the Atlantis II Deep brines can be derived from those of the interstitial...hydrothermal activity in the deep in the beginning of the Atlantis II Deep sedimentary history. The strontium |
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| GreatBrltaln Ore transport and deposition in the Red Sea geothermal system: a geochemical model WAYNEC....distribution of dissolved aqueous species in the Red Sea geothermal brine provides a model of ore transport...base metal sulfides, anhydrite, and barite. The Red Sea brme is recirculated seawater that acquires high...sutide and metals are carried together into the Atlantis II Deep. Below 150°C the brine becomes supersaturated...metalliferous sediments in the axial rift zone of the Red Sea provide a modern analogy for many ancient hydrothermal |
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| SIMON FIâąSER UNIVERSI TY i 111111 1111 II II 3 9345 01636083 0 geny G. Gurvich Sediments of the World...World Ocean Fundamental Theory of Deep-Sea Sedimentation 4V t I 4^ Springer SIMON FRASER UNIVERSITY...Sediments of the World Ocean Fundamental Theory of Deep-Sea Hydrothermal Sedimentation Digitized by the...Sediments of the World Ocean Fundamental Theory of Deep-Sea Hydrothermal Sedimentation With 174 Figures and...SEDIMENTS OF THE RED SEA.127 2.1. Conditions of formation.127 2.2. Atlantis II Deep.134 2.2.1. Spatial-temporal |
 | Anschutz, Pierre, Dedieu, Karine, Desmazes, Franck, Chaillou, Gwénaëlle (2005) Speciation, oxidation state, and reactivity of particulate manganese in marine sediments. Chemical Geology, 218 (3) 265-279 doi:10.1016/j.chemgeo.2005.01.008 | Journal (article/letter/editorial) |
| In anoxic sediments, manganese mainly occurs as Mn(II) carbonates and is generally in solid solution with...oxides are reduced to soluble Mn(II) (Burdige, 1993). Dissolved Mn(II) can diffuse towards the oxidized...Luther and Popp, 2002). The primary oxidant of Mn(II) can be oxygen, nitrate, or iodate (Aller, 1990;... Mn(III) phases are mainly MnOOH polymorphs (manganite, groutite, and feitknechtite). The Mn(IV) forms...birnessite (MnO2). There is also an intermediate form Mn(II/III), hausmannite (Hem and Lind, 1983; Post, 1999) |
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| sulfide deposits of the Kebrit and Shaban Deeps, Red Sea N. Blum and H. Puchelt Institut fiir Petrographic...Kebrit Deep carbonaceous sedimentary succession represent black smoker fragments, novel to any Red Sea brine...near the seawater/brine interface of the Kebrit Deep pool, are primarily comprised of Fe-, Zn- and Pb-bearing...parageneses, contrasting rift-related smoker and Red Sea metalliferous sediment deposits. Concentration...discharge, is essential for smoker formation. Shaban Deep sedimentary-hosted massive sulfides are less frequent |
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| of metalliferous sediments in the Atlantis II Deep of the Red Sea: Evidence from rare earth element geochemistry...Abstract The Atlantis II Deep is a brine-ïŹlled depression on the slowly spreading Red Sea rift axis. It...(BIF). The brine pool at the bottom of the Atlantis II Deep creates an environment where most of the hydrothermally...samples from 9 cores in diïŹerent parts of the Atlantis II Deep to better understand the origins of diïŹerent...to the Deep from outside account for most of the REE in the sediments of the Atlantis II Deep, similar |
 | Bonatti, Enrico, Fisher, David E., Joensuu, Oiva, Rydell, Harold S., Beyth, Michael (1972) Iron-Manganese-Barium Deposit from the Northern Afar Rift (Ethiopia) Economic Geology, 67 (6) 717-730 doi:10.2113/gsecongeo.67.6.717 | Journal (article/letter/editorial) |
| oceanicrifts; it can be considered a continuationof the Red Sea rift. We report here on the geochemistryof a Fe-Mn-Ba...the Afar Rift was submergedas a branch of the Red Sea. The deposit is associatedwith fossil coral reefs...Fe and Mn minerals were not deposited from normal sea water. The data suggestthat the depositwas formed...similaritiesto the hot brine metalliferousdepositsfrom the Red Sea and to depositsfrom active oceanicrifts, especiallythe...analogies between the East African Rift, andthe Red SeaRift (Fig. 1). The northernpart of the regionis |
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| ii sted fa Neko r eon „. Ae le tre aia mg et i Se LAL bo ee tetsspe Taree evo Saas ¹ Portes vo...vo tase reel see ~ To ii | q ORY | eo ir . | U i oto= N= |. trbersi of Strathclyde Glasgow...experience gained during sixteen years of going to sea largely to further the aims of marine mineral programmes...General Introduction Physiographic regions of the sea floor and their mineral potential . Lakes Sources...extraction eaiahismns General appearance . 5.3.1 Deep-sea concretions : 5.3.2 Near-shore and lacustrine |
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| Trace metal distribution in the Atlantis II Deep (Red Sea) sediments Tea E. Laurila, Mark D. Hannington...Dieter, Trace metal distribution in the Atlantis II Deep (Red Sea) sediments, Chemical Geology (2014), doi:...MANUSCRIPT Trace metal distribution in the Atlantis II Deep (Red Sea) PT sediments Department of Earth Sciences...tlaurila@geomar.de; Tel: +49 431 600-1431 Abstract The Atlantis II Deep is one of the only locations on the modern...inferred pathways for metal precipitation in the Atlantis II Deep sediments, especially adsorption onto surface-active |
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| brines and recent heavy metal deposits in the Red Sea a geochemical and geophysical account Additional...brines and recent heavy metal deposits in the Red Sea, ISBN 978-3-662-27120-9, is available at http://extras...Deposits in the Red Sea Hot Brines and Recent Heavy Metal Deposits in the Red Sea A Geochemical and...scheme. The world-wide interest in rift valleys and sea floor spreading with their attendant hydrothermal...activity can be studied in a miniscale in the Red Sea. The data reported in this book cover both the |
 | PolgĂĄri, M., Hein, J.R., Vigh, T., SzabĂł-Drubina, M., FĂłrizs, I., BĂrĂł, L., MĂŒller, A., TĂłth, A.L. (2012) Microbial processes and the origin of the ĂrkĂșt manganese deposit, Hungary. Ore Geology Reviews, 47. 87-109 doi:10.1016/j.oregeorev.2011.10.001 | Journal (article/letter/editorial) |
| fracture systems, which may have provided metals from deep-seated sources. © 2012 Elsevier B.V. All rights...initially described as such; and (3) aerobic microbial Mn(II) oxidation in aquatic (marine, freshwater) environments...and composed typically of Carhodochrosite and manganite. Remnants of microbial activity are also common...similar environmental conditions (Jenkyns, 1988); (ii) not all black shales are enriched in manganese (Jenkyns...manganese deposit type (Fig. 1c). These are ïŹlled with red lime-mudstone, varicoloured claystone, carbonate |
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| 01970. Les sĂ©diments mĂ©tallifĂšres des fosses Atlantis II, NĂ©rĂ©us et Commission I de la mer Rouge. Campagne...1998. â Les sĂ©diments mĂ©tallifĂšres des fosses Atlantis II, NĂ©rĂ©us et Commission I de la mer Rouge. Campagne...bathymĂ©triques des interfaces hydrologiques. KEYWORDS Red Seadeeps, metalliferous sĂ©diments, beddings, hor...metalliferoĂźis sĂ©diments from different deeps of the Red Sea (Atlantis //, Nereus and Commission I) collnted dtmng...deeps of the Central Rift Valley of the Red Sea (Atlantis II, Nereus and Commission I). The main amorphou |
