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Alteration mineralogy of Cretaceous basalt from ODP Site 1001, Leg 165 (Caribbean Sea)

Published online by Cambridge University Press:  09 July 2018

T. Clayton  and
R. B. Pearce
T. Clayton*
Affiliation:
School of Ocean and Earth Science, Southampton University, Southampton SO14 3ZH, UK
R. B. Pearce
Affiliation:
School of Ocean and Earth Science, Southampton University, Southampton SO14 3ZH, UK
*
*E-mail: [email protected]
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Abstract

Secondary clay minerals observed in the two uppermost basalt lava flows at ODP Site 1001, in the Caribbean Sea, drilled from the large igneous province of Cretaceous age, result from low-temperature alteration processes. Alteration mainly proceeds by circulation and diffusion of sea water. Six different types of clay mineral assemblage were recognized. Initial alteration with oxygenated sea water involves Fe and K fixation, creating visible oxidation halos parallel to the sides of cracks and fissures. A saponite/ beidellite mixture, interstratified smectite-glauconite, interstratified glauconite-nontronite and Fe oxyhydroxides are obtained depending on the distance from fluid conduits. The presence of beidellite may be due to enhanced Al mobilization resulting from high fluid flux. These early minerals are cross-cut by thin veins of pure celadonite or glauconite with further vesicle infill. Late-stage alteration is typified by the formation of saponite and takes place under closed reducing conditions resulting from deposition of the sedimentary overburden.

Keywords

basalt lava flowCaribbean Seasaponitebeidellitesmectiteglauconitenontroniteceladonite
Type
Research Article
Information
Clay Minerals , Volume 35 , Issue 4 , September 2000 , pp. 719 - 733
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2000

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References

Adamson, A.C. & Richards, H.G. (1990) Low temperature alteration of very young basalts from ODP Hole 648B: Serocki volcano, Mid-Atlantic Ridge. Pp. 181–194.in. Proc. ODP Sci. Results, 106/109 (Detrick, R. et al., editors). College Station, TX (Ocean Drilling Program).Google Scholar
Alt, J.C. (1995) Subseafloor processes in mid-ocean ridge hydrothermal systems. Pp. 85–114.in. Seafloor Hydrothermal Systems (Humphris, S. E., Zierenberg, R.A., Mullineux, L.S. & Thomson, R.E., editors). Geophysical Monograph, 91. American Geophysical Union, Washington D.C. Google Scholar
Alt, J.C. (1999) Very low-grade hydrothermal metamorphism of basic igneous rocks. Pp. 169–201.in: Low-grade Metamorphism (Frey, M. & Robinson, D., editors). Blackwell, Oxford, UK.Google Scholar
Alt, J.C. & Honnorez, J. (1984) Alteration of the upper oceanic crust: DSDP Site 417: mineralogy and chemistry. Contrib. Mineral. Pet. 87, 149–169.CrossRefGoogle Scholar
Alt, J.C., Lanord, C.F., Floyd, P.A. Castillo, P. & Galy, A. (1992) Low temperature hydrothermal alteration of Jurassic oceanic crust, Site 801. Pp. 415–427.in. Proc. ODP Sci. Results, 129 (Larson, R.L. & Lancelot, Y., editors). College Station, TX (Ocean Drilling Program).Google Scholar
Bass, M.N. (1976) Secondary minerals in oceanic basalts with special reference to Leg 34, DSDP. Pp. 393–432.in. Init. Reps. Deep Sea Drilling Project, 69-70. U.S. Govt. Printing Office, Washington D.C. Google Scholar
Brigatti, M.F. (1983) Relationships between composition and structure in Fe-rich smectites. Clay Miner. 18, 177–186.CrossRefGoogle Scholar
Buatier, M., Honnorez, J. & Erret, G. (1989) Fe-smectiteglauconite transition in hydrothermal green clays from the Galapagos Spreading Centre, DSDP, Hole 509B. Clays Clay Miner. 37, 532–541.CrossRefGoogle Scholar
Buckley, H.A., Bevan, J.C., Brown, K.M., Johnson, L.R. & Farmer, V.C. (1978) Glauconite and celadonite: two separate mineral species. Mineral. Mag. 42, 373–382.CrossRefGoogle Scholar
Donnelly, T.W., Pritchard, R.A., Emmermann, R. & Puchelt, H. (1979). The ageing of oceanic crust: synthesis of mineralogical and chemical results of DSDP Legs 51-53. Pp. 1563–1577.in: Init. Reps. Deep Sea Drilling Project, 51-53. U.S. Govt. Printing Office, Washington D.C. Google Scholar
Drever, J.I., Lawrence, J.R. & Antweiller, R.C. (1979) Gypsum and halite from the mid-Atlantic Ridge, DSDP Site 395. Earth Planet. Sci. Lett. 42, 98–102.CrossRefGoogle Scholar
Gillis, K.M & Robinson, P.T. (1990) Patterns and processes of alteration in the lavas and dykes of the Troodos ophiolite, Cyprus. J. Geophys Res. 95, 21523–21548.CrossRefGoogle Scholar
Harder, H. (1972) The role of magnesium in the formation of smectite minerals. Chem. Geol. 10, 31–39.CrossRefGoogle Scholar
Hillier, S. & Clayton, T. (1992) Cation exchange ‘staining’ of clay minerals in thin-section for electron microscopy. Clay Miner. 27, 379–384.CrossRefGoogle Scholar
Kerr, A.C., Tarney, J., Marriner, G.F., Nivia, A. & Saunders, A.D. (1997). The Caribbean-Colombian Cretaceous Igneous Province: The internal anatomy of an oceanic plateau. Pp. 123–144.in: Large Igneous Provinces: Continental , Oceanic and Planetary Flood Volcanism (Mahoney, J.J. & Coffin, M.F., editors). Geophysical Monograph, 100. American Geophysical Union, Washington D.C. Google Scholar
Laverne, C., Belarouchi, A. & Honnorez, J. (1996) Alteration mineralogy and chemistry of the upper oceanic crust from Hole 896A, Costa Rica rift. Pp. 151–170.in. Proc. ODP Sci. Results, 148 (Alt, J.C. et al., editors). College Station, TX (Ocean Drilling Program).Google Scholar
Odin, G.S. & Matter, A. (1981) De glauconiarium origine. Sedimentology, 28, 611–641.CrossRefGoogle Scholar
Pichler, T., Ridley, W.I. & Nelson, E. (1999) Lowtemperature alteration of dredged volcanics from the Southern Chile Ridge: additional information about early stages of seafloor weathering. Mar. Geol. 159, 155–177.CrossRefGoogle Scholar
Reynolds, R.C. (1985) NEWMOD, a computer program for the calculation of one-dimensional diffraction patterns of mixed-layered clays. Reynolds, R.C., 8 Brooks Road, Hanover, NH, USA.Google Scholar
Shipboard Scientific Party (1997) Site 1001. Pp. 291–357.in. Proc. ODP Init. Reports, 165 (Sigurdsson, H. et al., editors). College Station, TX (Ocean Drilling Program).Google Scholar
Sinton, C.W. & Duncan, R.A. (1997) Potential links between ocean plateau volcanism and global ocean anoxia at the Cenomanian-Turonian boundary. Econ. Geol. 92, 836–842.CrossRefGoogle Scholar
Speiss, F.N. et al. (1980) East Pacific Rise: Hot springs and geophys ical experiments. Science, 207, 1421–1433.Google Scholar
Środoń, J., Morgan, D.J., Eslinger, E.V., Eberl, D.D. & Karlinger, M.R. (1986) Chemistry of illite/smectite and end-member illite. Clays Clay Miner. 34, 368–378.CrossRefGoogle Scholar
Teagle, D.A.H., Alt, J.C., Bach, W., Halliday, A.N. & Erzinger, J. (1996) Alteration of upper oceanic crust in a ridge-flank hydrothermal upflow zone: mineral, chemical, and isotopic constraints from Hole 896A. Pp. 119–150.in. Proc. ODP Sci. Results, 148 (Alt, J.C. et al., editors). College Station, TX (Ocean Drilling Program).Google Scholar
Weaver, C.C. (1989) Clays, Muds and Shales. Devel. Sedimentol. 44. Elsevier, Amsterdam.Google Scholar