Reconstructing changes in seep activity by means of pore water and solid phase Sr/Ca and Mg/Ca ratios in pockmark sediments of the Northern Congo Fan

Marine Geology

Volumn 287, Issue 1-4, 2011, Pages 1-13

  Nothen K ^a   Kasten, S ^a  

^a ALFRED WEGENER INSTITUTE FOR POLAR AND MARINE RESEARCH   (Germany)

Author keywords

Anaerobic oxidation of methane; Authigenic carbonates; Ba; Congo Fan; Gas hydrates; Pockmark

Indexed keywords

ANAEROBIC OXIDATION OF METHANES; AUTHIGENIC; AUTHIGENIC CARBONATES; BLACK HOLES; CARBONATE CONCRETION; CARBONATE FORMATIONS; CARBONATE PRECIPITATION; COLD SEEPS; CONGO FAN; DEEP SEA FAN; DEPTH DISTRIBUTION; DIAGENETICS; GRAVITY CORE; HIGH FLUX; NIGER DELTA; POCKMARK; PORE WATERS; REACTION ZONES; SEDIMENT CORE; SEDIMENT SURFACE; SEEPAGE RATE; SOLID-PHASE; VERTICAL DISTRIBUTIONS;

ANOXIC SEDIMENTS; BARIUM; CALCITE; CARBONATE MINERALS; CARBONATION; CRYSTALLOGRAPHY; GAS HYDRATES; GRAVITATION; HYDRATION; INVESTMENTS; METHANE; SEEPAGE; STARS; SUBMARINE GEOLOGY; UNDERWATER MINERALOGY; WATER;

SEDIMENTOLOGY;

ALKALINE EARTH METAL; ANOXIC CONDITIONS; ARAGONITE; CALCITE; CARBONATE; COLD SEEP; CONCENTRATION (COMPOSITION); GAS HYDRATE; METHANE; MINERALOGY; POREWATER; PRECIPITATION (CHEMISTRY); RECONSTRUCTION; SEDIMENT ANALYSIS; SEDIMENT CHEMISTRY; SEDIMENT CORE; SEEPAGE; STRONTIUM; SULFATE; VERTICAL DISTRIBUTION;

ATLANTIC OCEAN; CONGO FAN; NIGER DELTA; NIGERIA;

GORGONACEA;

EID: 80052587573     PISSN: 00253227     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.margeo.2011.06.008     Document Type: Article

References (108)

1. Aloisi G., Pierre C., Rouchy J.-M., Foucher J.-P., Woodside J. Methane-related authigenic carbonates of eastern Mediterranean Sea mud volcanoes and their possible relation to gas hydrate destabilisation. Earth and Planetary Science Letters 2000, 184(1):321-338.
2. Aloisi G., Bouloubassi I., Heijs S.K., Pancost R.D., Pierre C., Sinninghe Damste J.S., Gottschal J.C., Forney L.J., Rouchy J.-M. CH4-consuming microorganisms and the formation of carbonate crusts at cold seeps. Earth and Planetary Science Letters 2002, 203(1):195-203.
3. Aloisi G., Wallmann K., Bollwerk S.M., Derkachev A., Bohrmann G., Suess E. The effect of dissolved barium on biogeochemical processes at cold seeps. Geochimica et Cosmochimica Acta 2004, 68(8):1735-1748.
4. Aloisi G., Wallmann K., Haese R.R., Saliège J.F. Chemical, biological and hydrological controls on the 14C content of cold seep carbonate crusts: numerical modeling and implications for convection at cold seeps. Chemical Geology 2004, 213(4):359-383.
5. Anka Z., Séranne M. Reconnaissance study of the ancient Zaire (Congo) deep-sea fan. (ZaiAngo Project). Marine Geology 2004, 209(1-4):223-244.
6. Arndt S., Hetzel A., Brumsack H.-J. Evolution of organic matter degradation in Cretaceous black shales inferred from authigenic barite: a reaction-transport model. Geochimica et Cosmochimica Acta 2009, 73:2000-2022.
7. Averyt K.B., Paytan A. A comparison of multiple proxies for export production in the equatorial Pacific. Paleoceanography 2004, 19:PA4003. 10.1029/2004PA001005.
8. Babonneau N., Savoye B., Cremer M., Klein B. Morphology and architecture of the present canyon and channel system of the Zaire deep-sea fan. Marine and Petroleum Geology 2002, 19(4):445-467.
9. Bayon G., Pierre C., Etoubleau J., Voisset M., Cauquil E., Marsset T., Sultan N., Le Drezen E., Fouquet Y. Sr/Ca and Mg/Ca ratios in Niger Delta sediments: implications for authigenic carbonate genesis in cold seep environments. Marine Geology 2007, 241(1-4):93-109.
10. Bayon G., Henderson G.M., Bohn M. U-Th stratigraphy of a cold seep carbonate crust. Chemical Geology 2009, 260(1-2):47-56.
11. Bayon G., Loncke L., Dupré S., Caprais J.C., Ducassou E., Duperron S., Etoubleau J., Foucher J.P., Fouquet Y., Gontharet S., Henderson G.M., Huguen C., Klaucke I., Mascle J., Migeon S., Olu-Le Roy K., Ondréas H., Pierre C., Sibuet M., Stadnitskaia A., Woodside J. Multi-disciplinary investigation of fluid seepage on an unstable margin: the case of the Central Nile deep sea fan. Marine Geology 2009, 261:92-104.
12. Bishop J.K.B. The barite-opal-organic carbon association in oceanic particulate matter. Nature 1988, 332:341-343.
13. Bleil U., et al. Report and preliminary results of SONNE Cruise SO 86, Buenos Aires - Capetown, 22.4.-31.5.93. Berichte, Fachbereich Geowissenschaften 1994, 51. Universität Bremen, 116 pp.
14. Boetius A., Ravenschlag K., Schubert C.J., Rickert D., Widdel F., Gieseke A., Amann R., Jørgensen B.B., Witte U., Pfannkuche O. A marine microbial consortium apparently mediating anaerobic oxidation of methane. Nature 2000, 407:623-626.
15. Bohrmann G., Greinert J., Suess E., Torres M. Authigenic carbonates from the Cascadia subduction zone and their relation to gas hydrate stability. Geology 1998, 26(7):647-650.
16. Boudreau B.P. Diagenetic Models and Their Implementation - Modelling Transport and Reactions in Aquatic Sediments 1996, Springer, Berlin Heidelberg New York, 414 pp.
17. Burton E.A. Controls on marine carbonate cement mineralogy: review and reassessment. Chemical Geology 1993, 105:163-179.
18. Castellini D.G., Dickens G.R., Snyder G.T., Ruppel C.D. Barium cycling in shallow sediment above active mud volcanoes in the Gulf of Mexico. Chemical Geology 2006, 226(1-2):1-30.
19. Charlou J.L., Donval J.P., Fouquet Y., Ondreas H., Knoery J., Cochonat P., Levaché D., Poirier Y., Jean-Baptiste P., Fourré E., Chazallon B. Physical and chemical characterization of gas hydrates and associated methane plumes in the Congo-Angola Basin. Chemical Geology 2004, 205(3-4):405-425.
20. Cole G.A., Requejo A.G., Ormerod D., Yu Z., Clifford A. Petroleum geochemical assessment of the Lower Congo Basin. AAPG Memoir 2000, 325-339. M.R. Mello, B.J. Katz (Eds.).
21. De Boever E., Swennen R., Dimitrov L. Lower Eocene carbonate-cemented "chimney" structures (Varna, Bulgaria) - control of seepage rates on their formation and stable isotopic signature. Journal of Geochemical Exploration 2006, 89(1-3):78-82.
22. Dehairs F., Chesselet R., Jedwab J. Discrete suspended particles of barite and the barium cycle in the open ocean. Earth and Planetary Science Letters 1980, 49:528-550.
23. Dickens G.R. Sulfate profiles and barium fronts in sediment on the Blake Ridge: present and past methane fluxes through a large gas hydrate reservoir. Geochimica et Cosmochimica Acta 2001, 65(4):529-543.
24. Dickens G.R. Rethinking the global carbon cycle with a large, dynamic and microbially mediated gas hydrate capacitor. Earth and Planetary Science Letters 2003, 213(3-4):169-183.
25. Dickens G.R., Fewless T., Thomas E., Bralower T.J. Excess barite accumulation during the Paleocene-Eocene thermal Maximum: massive input of dissolved barium from seafloor gas hydrate reservoirs. Geological Society of America Special Papers 2003, 11-23. S.L. Wing, P.D. Gingerich, B. Schmitz, E. Thomas (Eds.).
26. Dymond J., Suess E., Lyle M. Barium in deep-sea sediment: a geochemical proxy for paleoproductivity. Paleoceanography 1992, 12(2):163-181.
27. Feng D., Chen D., Peckmann J. Rare earth elements in seep carbonates as tracers of variable redox conditions at ancient hydrocarbon seeps. Terra Nova 2009, 21:49-56.
28. Feng D., Chen D., Roberts H.H. Petrographic and geochemical characterization of seep carbonate from Bush Hill (GC 185) gas vent and hydrate site of the Gulf of Mexico. Marine and Petroleum Geology 2009, 26(7):1190-1198.
29. Feng D., Chen D., Peckmann J., Bohrmann G. Authigenic carbonates from methane seeps of the northern Congo fan: microbial formation mechanism. Marine and Petroleum Geology 2010, 27(4):748-756.
30. Fernandez-Diaz L., Puntis A., Prieto A., Puntis C.V. The role of magnesium in the crystallisation of calcite and aragonite in porous medium. Journal of Sedimentary Research 1996, 66:482-491.
31. Fossing H., Ferdelman T.G., Berg P. Sulfate reduction and methane oxidation in continental margin sediments influenced by irrigation (South-East Atlantic off Namibia). Geochimica et Cosmochimica Acta 2000, 64(5):897-910.
32. Gay A., Lopez M., Cochonat P., Sultan N., Cauquil E., Brigaud F. Sinuous pockmark belt as indicator of a shallow buried turbiditic channel on the lower slope of the Congo Basin, West African Margin. Subsurface Sediment Mobilisation 2003, 173-189. Geological Society of London, London. P. Van Rensbergen, R.R. Hillis, A.J. Maltman, C.K. Morley (Eds.).
33. Gay A., Lopez M., Cochonat P., Levache D., Sermondadaz G., Séranne M. Evidences of early to late fluid migration from an upper Miocene turbiditic channel revealed by 3D seismic coupled to geochemical sampling within seafloor pockmarks, Lower Congo Basin. Marine and Petroleum Geology 2006, 23(3):387-399.
34. Gay A., Lopez M., Cochonat P., Séranne M., Levache D., Sermondadaz G. Isolated seafloor pockmarks linked to BSRs, fluid chimneys, polygonal faults and stacked Oligocene-Miocene turbiditic palaeochannels in the Lower Congo Basin. Marine Geology 2006, 226(1-2):25-40.
35. Gay A., Lopez M., Ondreas H., Charlou J.L., Sermondadaz G., Cochonat P. Seafloor facies related to upward methane flux within a Giant Pockmark of the Lower Congo Basin. Marine Geology 2006, 226(1-2):81-95.
36. Gay A., Lopez M., Berndt C., Séranne M. Geological controls on focused fluid flow associated with seafloor seeps in the Lower Congo Basin. Marine Geology 2007, 244:68-92.
37. Gieskes J., Mahn C., Day S., Martin J.B., Greinert J., Rathburn T., McAdoo B. A study of the chemistry of pore fluids and authigenic carbonates in methane seep environments: Kodiak Trench, Hydrate Ridge, Monterey Bay, and Eel River Basin. Chemical Geology 2005, 220(3-4):329-345.
38. Gonneea M.E., Paytan A. Phase associations of barium in marine sediments. Marine Chemistry 2006, 100(1-2):124-135.
39. Greinert J., Bohrmann G., Suess E. Gas hydrate-associated carbonates and methane-venting at Hydrate Ridge: classification, distribution, and origin of authigenic lithologies. Natural Gas Hydrates: Occurrence, Distribution, and Detection. Geophysical Monograph 2001, 124:99-113. C.K. Paull, W.P. Dillon (Eds.).
40. Greinert J., Bollwerk S.M., Derkachev A., Bohrmann G., Suess E. Massive barite deposits and carbonate mineralization in the Derugin Basin, Sea of Okhotsk: precipitation processes at cold seep sites. Earth and Planetary Science Letters 2002, 203(1):165-180.
41. Haas A., Little C.T.S., Sahling H., Bohrmann G., Himmler T., Peckmann J. Mineralization of vestimentiferan tubes at methane seeps on the Congo deep-sea fan. Deep Sea Research Part I: Oceanographic Research Papers 2009, 56(2):283-293.
42. Haas A., Peckmann J., Elvert M., Sahling H., Bohrmann G. Patterns of carbonate authigenesis at the Kouilou pockmarks on the Congo deep-sea fan. Marine Geology 2010, 268(1-4):129-136.
43. Haeckel M., Boudreau B.P., Wallmann K. Bubble-induced porewater mixing: A 3-D model for deep porewater irrigation. Geochimica et Cosmochimica Acta 2007, 71(21):5135-5154.
44. Halbach P., Holzbecher E., Reichel T., Moche R. Migration of the sulfate-methane reaction zone in marine sediments of the Sea of Marmara - can this mechanism be tectonically induced?. Chemical Geology 2004, 205(1-2):73-82.
45. Henkel, S., Schwenk, T., Hanebuth, T. J. J., Strasser, M., Riedinger, N., Formolo, M., Tomasini, J., Krastel, S., Kasten, S., in press. Pore water geochemistry as a tool for identifying and dating recent mass-transport deposits, Submarine Mass Movements and Their Consequences, 4th edition, Y. Ogawa (ed.), Springer.
46. Hensen C., Zabel M., Pfeifer K., Schwenk T., Kasten S., Riedinger N., Schulz H.D., Boetius A. Control of sulfate pore-water profiles by sedimentary events and the significance of anaerobic oxidation of methane for the burial of sulfur in marine sediments. Geochimica et Cosmochimica Acta 2003, 67(14):2631-2647.
47. Hinrichs K.-U., Hayes J.M., Sylva S.P., Brewer P.G., DeLong E.F. Methane-consuming archaebacteria in marine sediments. Nature 1999, 398:802-805.
48. Holtvoeth J., Wagner T., Horsfield B., Schubert C.J., Wand U. Late-Quaternary supply of terrigenous organic matter to the Congo deep-sea fan (ODP site 1075): implications for equatorial African paleoclimate. Geo-Marine Letters 2001, 21:23-33.
49. Holtvoeth J., Wagner T., Schubert C.J. Organic matter in river-influenced continental margin sediments: the land-ocean and climate linkage at the Late Quarternary Congo fan (ODP Site 1075). Geochemistry, Geophysics, Geosystems 2003, 4(12):1109. 10.1029/2003GC000590.
50. Hovland M., Judd A.G. Seabed Pockmarks and Seepages. Impact on Geology, Biology and the Marine Environment 1988, Graham & Trotman, London, 293 pp.
51. Jansen J.H.F., Van Weering T.C.E., Gieles R., Van Ipresen J. Middle and late Quaternary oceanography and climatology of the Zaire-Congo fan and the adjacent eastern Angola Basin. Netherlands Journal of Sea Research 1985, 17:201-249.
52. Judd A., Hovland M. Seabed Fluid Flow. Impact on Geology, Biology, and the Marine Environment 2007, Cambridge University Press, Cambridge, UK, 475 pp.
53. Karner G.D., Driscoll N.W., McGinnis J.P., Brumbaugh W.D., Cameron N.R. Tectonic significance of syn-rift sediment packages across the Gabon-Cabinda continental margin. Marine and Petroleum Geology 1997, 14(7-8):973-1000.
54. Kasten S., Freudenthal T., Gingele F.X., Schulz H.D. Simultaneous formation of iron-rich layers at different redox boundaries in sediments of the Amazon deep-sea fan. Geochimica et Cosmochimica Acta 1998, 62(13):2253-2264.
55. Kasten S., Zabel M., Heuer V., Hensen C. Processes and signals of non-steady-state diagenesis in deep-sea sediments and their pore waters. The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems 2003, 431-459. Springer. G. Wefer, S. Mulitza, V. Ratmeyer (Eds.).
56. Lapham L.L., Chanton J.P., Chapman R., Martens C.S. Methane under-saturated fluids in deep-sea sediments: implications for gas hydrate stability and rates of dissolution. Earth and Planetary Science Letters 2010, 298:275-285.
57. Léon R., Somoza L., Medialdea T., Gonzalez F., Diaz-del-Rio V., Fernandez-Puga M., Maestro A., Mata M. Sea-floor features related to hydrocarbon seeps in deepwater carbonate-mud mounds of the Gulf of Cadiz: from mud flows to carbonate precipitates. Geo-Marine Letters 2007, 27:237-247.
58. Luff R., Wallmann K. Fluid flow, methane fluxes, carbonate precipitation and biogeochemical turnover in gas hydrate-bearing sediments at Hydrate Ridge, Cascadia Margin: numerical modeling and mass balances. Geochimica et Cosmochimica Acta 2003, 67(18):3403-3421.
59. Marton L.G., Tari G.C., Lehmann C.T. Evolution of the Angolan passive margin, West Africa, with emphasis on post-salt structural styles. Atlantic Rifts and Continental Margins 2000, 129-149. Geophysical Monograph American Geophysical Union, Washington, DC. W. Mohriak, M. Talwani (Eds.).
60. Mazzini A., Svensen H., Hovland M., Planke S. Comparison and implications from strikingly different authigenic carbonates in a Nyegga complex pockmark, G11, Norwegian Sea. Marine Geology 2006, 231(1-4):89-102.
61. Meister P., McKenzie J.A., Vasconcelos C., Bernasconi S., Frank M., Gutjahr M., Schrag D.P. Dolomite formation in the dynamic deep biosphere: results from the Peru Margin. Sedimentology 2007, 54(5):1007-1032.
62. Meyer H.J. The influence of impurities on the growth rate of calcite. Journal of Crystal Growth 1984, 66:639-646.
63. Moore T.S., Murray R.W., Kurtz A.C., Schrag D.P. Anaerobic methane oxidation and the formation of dolomite. Earth and Planetary Science Letters 2004, 229(1-2):141-154.
64. Morse J.W. The kinetics of calcium carbonate dissolution and precipitation. Carbonates: Mineralogy and Chemistry 1983, 227-264. Mineralogical Society of America. R.J. Reeder (Ed.).
65. Morse J.W., Mackenzie F.T. Geochemistry of Sedimentary Carbonates 1990, Elsevier, Amsterdam, 707 pp.
66. Morse J.W., Wang Q., Tsio M.Y. Influences of temperature and Mg:Ca ratio on CaCO3 precipitates from seawater. Geology 1997, 25(1):85-87.
67. Nähr T.H., Rodriguez N.M., Bohrmann G., Paull C.K., Botz R. Methane-derived authigenic carbonates associated with gas hydrate decomposition and fluid venting above the Blake Ridge diapir. Proceedings of the Ocean Drilling Program, Scientific Results 2000, 164. C.K. Paull, R. Matsumoto, P.J. Wallace, W.P. Dillon (Eds.).
68. Nähr T.H., Eichhubl P., Orphan V.J., Hovland M., Paull C.K., Ussler W., Lorenson T.D., Greene H.G. Authigenic carbonate formation at hydrocarbon seeps in continental margin sediments: a comparative study. Deep Sea Research Part II: Topical Studies in Oceanography 2007, 54(11-13):1268-1291.
69. Nähr T.H., Birgel D., Bohrmann G., MacDonald I.R., Kasten S. Biogeochemical controls on authigenic carbonate formation at the Chapopote "asphalt volcano", Bay of Campeche. Chemical Geology 2009, 266(3-4):390-402.
70. Niemann H., Fischer D., Graffe D., Knittel K., Montiel A., Heilmayer O., Nöthen K., Pape T., Kasten S., Bohrmann G., Boetius A., Gutt J. Biogeochemistry of a low-activity cold seep in the Larsen B area, western Weddell Sea, Antarctica. Biogeosciences 2009, 6:2383-2395.
71. Nordstrøm D.K., Plummer L.N., Wigley T.M.L., Woley T.J., Ball J.W., Jenne E.A., Basset R.L., Crerar D.A., Florence T.M., Fritz B., Hoffmann M., Holdren G.R.j., Lafon G.M., Mattigod S.V., McDuff R.E., Morel F., Reddy M.M., Sposito G., Thraikill J. A comparison of computerized chemical models for equilibrium calculations in aqueous systems. Chemical Modeling in Aqueous Systems. Speciation, Sorption, Solubility, and Kinetics 1979, 857-892. American Chemical Society, Washington, DC. E.A. Jenne (Ed.).
72. Ondreas H., Olu K., Fouquet Y., Charlou J.L., Gay A., Dennielou B., Donval J.P., Fifis A., Nadalig T., Chochonat P., Cauquil E., Bourillet J.F., Le Moigne M., Sibuet M. ROV study of a giant pockmark on the Gabon continental margin. Geo-Marine Letters 2005, 25(5):281-292.
73. Peckmann J., Thiel V. Carbon cycling at ancient methane-seeps. Chemical Geology 2004, 205(3-4):443-467.
74. Peckmann J., Paul J., Thiel V. Bacterially mediated formation of diagenetic aragonite and native sulfur in Zechstein carbonates (Upper Permian, Central Germany). Sedimentary Geology 1999, 126(1-4):205-222.
75. Peckmann J., Reimer A., Luth U., Luth C., Hansen B.T., Heinicke C., Hoefs J., Reitner J. Methane-derived carbonates and authigenic pyrite from the northwestern Black Sea. Marine Geology 2001, 177(1-2):129-150.
76. Pierre C., Fouquet Y. Authigenic carbonates from methane seeps of the Congo deep-sea fan. Geo-Marine Letters 2007, 27(2-4):249-257.
77. Pierre C., Rouchy J.M., Gaudichet A. Diagenesis in the gas hydrate sediments of the Blake Ridge. Mineralogy and stable isotope compositions of the carbonate and sulphide minerals. Proceedings of the Ocean Drilling Program, Scientific Results 2000, 164:139-145.
78. Pilcher R., Argent J. Mega-pockmarks and linear pockmark trains on the West African continental margin. Marine Geology 2007, 244(1-4):15-32.
79. Reitner J., Peckmann J., Blumenberg M., Michaelis W., Reimer A., Thiel V. Concretionary methane-seep carbonates and associated microbial communities in Black Sea sediments. Palaeogeography, Palaeoclimatology, Palaeoecology 2005, 227(1-3):18-30.
80. Reitz A., Pfeifer K., de Lange G.J., Klump J. Biogenic barium and the terrigenous Ba/Al ratio: a comparison of its direct and indirect determination. Marine Geology 2004, 204(3-4):289-300.
81. Riedinger N., Kasten S., Gröger J., Franke C., Pfeifer K. Active and buried authigenic barite fronts in sediments from the Eastern Cape Basin. Earth and Planetary Science Letters 2006, 241(3-4):876-887.
82. Ritger S., Carson B., Suess E. Methane-derived authigenic carbonates formed by subduction-induced pore-water expulsion along the Oregon/Washington margin. Geol. Soc. Amer. Bull. 1987, 98:147-156.
83. Rodriguez N.M., Paull C.K., Borowski W.S. Zonation of authigenic carbonates within gas hydrate-bearing sedimentary sections on the Blake Ridge: offshore southeastern North America. Proceedings of the Ocean Drilling Program, Scientific Results 2000, 164:301-312. C.K. Paull, R. Matsumoto, P.J. Wallace, W.P. Dillon (Eds.).
84. Rutten A., de Lange G.J. A novel selective extraction of barite, and its application to eastern Mediterranean sediments. Earth and Planetary Science Letters 2002, 6144:1-14.
85. Sahling H., Bohrmann G., Spiess V., Bialas J., Breitzke M., Ivanov M., Kasten S., Krastel S., Schneider R. Pockmarks in the Northern Congo Fan area, SW Africa: complex seafloor features shaped by fluid flow. Marine Geology 2008, 249(3-4):206-225.
86. Schneider R.R., Price B., Müller P.J., Kroon D., Alexander I. Monsoon related variations in Zaire (Congo) sediment load and influence of fluvial silicate supply on marine productivity in the east equatorial Atlantic during the last 200,000years. Paleoceanography 1997, 12:463-481.
87. Schulz H.D., Zabel M. Marine Geochemistry 2006, Springer Verlag, Heidelberg, NY, 574 pp.
88. Schulz H.D., et al. Report and preliminary results of METEOR-Cruise M20/2, Abidjan - Dakar, 27.12.1991-3.2.1992. Berichte, Fachbereich Geowissenschaften 1992, 25. Universität Bremen, 173 pp.
89. Schulz H.D., et al. Report and preliminary results of METEOR-Cruise M41/1, Malaga-Libreville, 13.2.-15.3.1998. Berichte, Fachbereich Geowissenschaften 1998, 114. Universität Bremen, 124 pp.
90. Sibuet J.-C., Galeron J., Khripounoff A., Menot L., Olu-Le Roy K., Durrieu J., Mine J., Caprais J.C., Crassous P., Fabri M.C., Vangriesheim A., Desneulin J., Savoye B., Cochonat P., Ondreas P., Etoubleau J., Lubrieu B., Dinet A., Von Cosel R. Deep sea ecosystems on the equatorial margin: first results of a pluridisciplinary environmental program and discovery of chemosynthesis based ecosystems, SPE international conference on health, safety and environment in oil and gas exploration and production 2002, Society of Petroleum Engineers, Kuala Lumpur, Malaysia.
91. Snyder G.T., Dickens G.R., Castellini D.G. Labile barite contents and dissolved barium concentrations on Blake Ridge: new perspectives on barium cycling above gas hydrate systems. Journal of Geochemical Exploration 2007, 95(1-3):48-65.
92. Snyder G.T., Hiruta A., Matsumoto R., Dickens G.R., Tomaru H., Takeuchi R., Komatsubara J., Ishida Y., Yu H. Pore water profiles and authigenic mineralization in shallow marine sediments above the methane-charged system on Umitaka Spur, Japan Sea. Deep Sea Research Part II: Topical Studies in Oceanography 2007, 54(11-13):1216-1239.
93. Spieß V., et al. Report and preliminary results of METEOR-Cruise M 47/3, Libreville-Walvis Bay, 01.06.-03.07.2000. Berichte, Fachbereich Geowissenschaften 2002, 202. Universität Bremen, 70 pp.
94. Teichert B.M.A., Eisenhauer A., Bohrmann G., Haase-Schramm A., Bock B., Linke P. U/Th systematics and ages of authigenic carbonates from Hydrate Ridge, Cascadia Margin: recorders of fluid flow variations. Geochimica et Cosmochimica Acta 2003, 67(20):3845-3857.
95. Teichert B.M.A., Gussone N., Eisenhauer A., Bohrmann G. Clathrites: Archives of near-seafloor pore-fluid evolution (δ44/40Ca, δ13C, δ18O) in gas hydrate environments. Geology 2005, 33(3):213-216.
96. Thiel V., Peckmann J., Seifert R., Wehrung P., Reitner J., Michaelis W. Highly isotopically depleted isoprenoids: molecular markers for ancient methane venting. Geochimica et Cosmochimica Acta 1999, 63(23-24):3959-3966.
97. Torres M.E., Brumsack H.J., Bohrmann G., Emeis K.C. Barite fronts in continental margin sediments: a new look at barium remobilization in the zone of sulfate reduction and formation of heavy barites in diagenetic fronts. Chemical Geology 1996, 127:125-139.
98. Torres M.E., McManus J., Huh C.-A. Fluid seepage along the San Clemente Fault scarp: basin-wide impact on barium cycling. Earth and Planetary Science Letters 2002, 203(1):181-194.
99. Torres M.E., Bohrmann G., Dube T.E., Poole F.G. Formation of modern and Paleozoic stratiform barite at cold methane seeps on continental margins. Geology 2003, 31(10):897-900.
100. Tryon M.D., Brown K.M. Fluid and chemical cycling at Bush Hill: implications for gas- and hydrate rich environments. Geochemistry, Geophysics, Geosystems 2004, 5:Q12004. 10.1029/2004GC000778.
101. Uenzelmann-Neben G. Neogene sedimentation history of the Congo Fan. Marine and Petroleum Geology 1998, 15(7):635-650.
102. Uenzelmann-Neben G., Spiess V., Bleil U. A seismic reconnaissance survey of the northern Congo Fan. Marine Geology 1997, 140(3-4):283-306.
103. Wagner T., Zabel M., Dupont L., Holtvoeth J., Schubert C.J. Terrigenous signals in sediments of the low latitude Atlantic - implications for environmental variations during the Late Quaternary: Part I. The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems 2003, 297-324. Springer, Berlin, Heidelberg, New York, Tokyo. G. Wefer, S. Mulitza, V. Ratmeyer (Eds.).
104. Walter L.M. Relative efficiency of carbonate dissolution and precipitation during diagenesis: a progress report on the role of solution chemistry. Roles of Organic Matter in Mineral Diagenesis. Society of Economic Palaeontologists and Mineralogists, Special Publications 1986, 1-12. G.L. Gautier (Ed.).
105. Wefer G., et al. Report and preliminary results of METEOR-Cruise M6/6, Libreville-Las Palmas, 18.2.-23.3.1988. Berichte, Fachbereich Geowissenschaften 1988, 3. Universität Bremen, 97 pp.
106. Wefer G., et al. Report and preliminary results of METEOR-Cruise M16/1, Pointe Noire-Recife, 27.3.-25.4.1991. Berichte, Fachbereich Geowissenschaften 1991, 18. Universität Bremen, 120 pp.
107. Wefer G., Berger W.H., Richter C. Proceedings of the Ocean Drilling Program, Initial Report 1998, 175.
108. Zabel M., Schulz H.D. Importance of submarine landslides for non-steady state conditions in pore water systems - lower Zaire (Congo) deep-sea fan. Marine Geology 2001, 176(1-4):87-99.