Biographical Information:  Jeffrey C. Alt

EDUCATION

    Ph.D.  Marine Geology and Geophysics, University of Miami, 1984
    M.S.   Marine Geology and Geophysics, University of Miami, 1981
    B.S.    Honors in Geology and Mineralogy, University of Michigan, 1975

PROFESSIONAL EXPERIENCE

    Research Scientist, Dept. Geological Sciences, Univ. Michigan, 1998-present
    Associate Research Scientist, Dept Geol. Sciences, Univ. Michigan, 1991-    1998
    Visiting Professor, Institut de Geologie, Universite Louis Pasteur,
                    Strasbourg, France 3/96-8/96
    Assistant Research Scientist, Dept. Geol. Sciences, Univ. Michigan, 1989-1991
    Senior Research Scientist, Washington University in St. Louis, 1987-1989
    Research Scientist, Washington University in St. Louis, 1985-1987

FIELD EXPERIENCE

    Metamorphic Petrologist, Ocean Drilling Program Leg 206, Superfast Pacific Crust, 2002
    Yellowstone Lake, WY, ROV sampling hydrothermal vents, 7/97, 7/98
    Metamorphic Petrologist, ODP Leg 185, Old Pacific Crust, 1998
    Metamorphic Petrologist, Ocean Drilling Program 176, SW Indian Ridge,1997
    Hydrothermal vents in Yellowstone Lake, Wyoming, USA, 7/97, 7/98
    Metamorphic Petrologist, Ocean Drilling Program Leg 158, TAG hydrothermal deposit, Mid- Atlantic Ridge, 1994
    Co-Chief Scientist,  Ocean Drilling Program Leg 148, Costa Rica Rift, 1993
    Metamorphic Petrologist, Ocean Drilling Program Leg 140, Costa Rica Rift, 1991
    Igneous Petrologist, Ocean Drilling Program Leg 137, Costa Rica Rift, 1991
    Troodos Ophiolite, Cyprus, 1990
    Igneous Petrologist, Ocean Drilling Program Leg 111, Costa Rica Rift, 1986
    Atlantis II-ALVIN, Hydrothermal vents and deposits on seamounts near 21˚N,         East Pacific Rise, 1985
    Atlantis II-ALVIN, Seamounts in the E. Pacific, 1984
    Igneous Petrologist, Deep Sea Drilling Project, Leg 83 Costa Rica Rift, 1981

PROFESSIONAL SOCIETIES AND COMMITTEES

    Associate Editor, Geochimica et Cosmochimica Acta, 1993-present
    NSF OCE-Marine Geology and Geophysics Review Panel (1995-1998)
    RIDGE Steering Committee (1993-1996)
    JOIDES Sedimentary and Geochemical Processes Panel (1989-1993)
    Member: Geochemical Society,  American Geophysical Union,
   Geological Society of America

RESEARCH INTERESTS

    Water-rock interactions and metamorphism;    Geochemical cycling at mid-ocean ridges and subduction zones; Formation of hydrothermal deposits.

HONORS AND AWARDS
    
2001 Research Scientist Achievement Award, LS&A, University of Michigan
1999  Excellence in Research Award, LS&A, University of Michigan
1983/1984  Koczy fellowship, University of  Miami

PAPERS SUBMITTED/IN PRESS:

Teagle, D.A.H., and Alt, J.C., Hydrothermal alteration of basalts beneath the Bent Hill Massive Sulfide Deposit, Middle Valley, Juan de Fuca Ridge, Econ. Geol., in press, 9/03.

PUBLISHED PAPERS

2003
Alt, J.C., Davidson, G.J., Teagle, D.A.H., and Karson, J.A., The Isotopic Composition of Gypsum in the Macquarie Island Ophiolite: Implications for the Sulfur Cycle and the Subsurface Biosphere in Oceanic Crust, Geology, 31: 549–552;
Alt, J.C., and Teagle, D.A.H., Hydrothermal Alteration of Upper Oceanic Crust Formed at a Fast Spreading Ridge: Mineral, Chemical, and Isotopic Evidence from ODP Site 801. Chem Geol, 201, 191-211.
Alt, J. C., Stable isotopic composition of upper oceanic crust formed at a fast spreading ridge, ODP Site 801, Geochem. Geophys. Geosyst., 4(5), 8908, doi:10.1029/2002GC000400.
Alt, J.C., Hydrothermal Fluxes At Mid-Ocean Ridges And On Ridge Flanks, Comptes Rendus Geoscience, 335, 853-864.
Alt, J.C., Alteration Of The Upper Oceanic Crust:Mineralogy, Chemistry, And Processes, in: Elderfield, H. and Davis, E., eds, Hydrogeology of the Oceanic Lithosphere, Elsevier, in press.
Alt, J.C., and W. Bach. Alteration of Oceanic Crust: Subsurface Rock-Water Interactions, in: Energy and mass transfer in marine hydrothermal systems, P.E. Halbach, V. Tunnicliffe, and J.R. Hein, eds., Dahlem University Press, 7-27.
Alt, J.C. and W.C. Shanks, Serpentinization of abyssal peridotites from the MARK area, Mid-Atlantic Ridge: Sulfur geochemistry and reaction modeling, Geochim. Cosmochim. Acta, 67, 641-653.
Kesler, S.E., Fortuna, J., Alt, J.C., Ye, Z., Core, D.P., Zohar, P., Borhauer, J., and Chryssoulis, S.L., Evaluation of the role of sulfidation in deposition of gold, Screamer section of the Betze-Post Carlin-Type gold deposit, Nevada, Econ. Geol. 98, 1137-1157.
Devey, C.W., J.C. Alt, W. Bach, J. Erzinger, A.T. Fisher, K.M. Gillis, M. Kinoshita, P. Nehlig, H. Staudigel, 2002.  What Is the Nature of Sub-seafloor Fluid Circulation and Reaction Processes? in: Energy and mass transfer in marine hydrothermal systems, P.E. Halbach, V. Tunnicliffe, and J.R. Hein, eds., Dahlem University Press, 71-84.
Teagle, D.A.H., M.J. Bickle, J.C. Alt, 2003.  Recharge flux to ocean-ridge black smoker systems: a geochemical estimate from ODP Hole 504B Earth Planet. Sci. Lett. 210, 81-89

2002
Chan, Lui-Heung, J.C. Alt, and D.A.H. Teagle, Lithium and lithium isotope profiles through the upper oceanic crust:A study of seawater basalt exchange at ODP Sites 504b and 896A. Earth Planet. Sci. Lett., 201, 187-201.

2001
Alt, J.C. and W. Bach, Low Grade Hydrothermal Alteration Of Uplifted Lower Oceanic Crust, Hole 735B: Mineralogy And Isotope Geochemistry. Proc. OCP, Sci. Results., Ocean Drilling Program, College Station, TX, v. 176,. http://www-odp.tamu.edu/publications/176_SR/
Bach, W. Alt, J.C., Niu, Y., Humphris, S.E., Erzinger, J., and Dick, H.J.B., The chemical consequences of late-stage hydrothermal circulation in an uplifted block of lower ocean crust at the SW Indian Ridge: Results from ODP Hole 735B (Leg 176). Geochimica et Cosmochimica Acta, 19: 3267-3287.
Blake, R.E., Alt, J.C. and Martini, A.M., Oxygen isotope ratios of PO4: An inorganic indicator of enzymatic activity and P metabolism and a new biomarker in the search for life.  Proc. Nat. Acad. Sci. 98: 2148-2153.
Robinson, P.T., et al., Lower oceanic crust formed at an ultraslow spreading rideg: Ocean Drilling Program Hole 735B, SW Indian Ridge. in: Dilek, Y., E. Moores, and D. Elthon and A. Nicolas, eds., Geol. Soc. Am. Spec. Paper 349, Ophiolites and Oceanic Crust: New Insights from Field Studies and Ocean Drilling Program, 75-86.
Zhou, W., D.R. Peacor, J. Alt, R. Van der Voo, L.-S. Kao. TEM Study of the Alteration of Glass in MORB by Inorganic Processes. Chem. Geol. 174, 365-376.

2000
Alt, J.C. and P. Mata, 2000. On the role of microbes in the alteration of submarine basaltic glass: A TEM Study. Earth Planet. Sci. Lett.,  181, 301-313.
Alt, J.C. and D.A.H. Teagle.  Hydrothermal alteration and fluid fluxes in
    ophiolites and oceanic crust, in: Dilek, Y., E. Moores, and D. Elthon and A. Nicolas, eds., Ophiolites and Oceanic Crust: New Insights from Field Studies and the Ocean Drilling Program, Geol. Soc. Am. Spec. Paper 349, 273-282.
Smith, Spivack, Fisk, Haveman, Staudigel, and Shipboard Scientific Party.  Methods for quantifying microbial contamination during deep ocean coring,  ODP Technical Note 28, http://www-odp.tamu.edu/publications/tnotes/tn28/INDEX.HTM.
Plank, T., Ludden, J.., Escutia, C., et al., Initial Reports ODP, v. 185, http://www-odp.tamu.edu/publications
Dick, H.J.B., J. Natland, J. Alt, W. Bach, D. Bideau, J. Gee, S. Haggas, J. Hertogen, G. Hirth, P. Holm, B. Ildefonse, G. Iturrino, B. John, D. Kelley, E. Kikawa, A. Kingdon, P. LeRoux, J. Maeda, P. Meyer, D.J. Miller, H.R. Naslund, Y.L. Niu, P. Robinson, J. Snow, R. Stephen, P. Trimby, H.U. Worm, A. Yoshinobu. A long in-situ section of the lower ocean crust: Results of ODP Leg 176 drilling at the southwest Indian Ridge. Earth Planet. Sci. Lett. 179, 31-51.
Yi, W., A.N. Halliday, M. Garcia, C. Langmuir, J. Alt, D.C. Lee. Tellurium, Cadmium and sulfur in oceanic basalts and chalcophile element fractionation in the mantle. J. Geophys. Res.,105, 18,927-18,948.
D.A.H. Teagle, M.J. Bickle, and J.C. Alt, High Temperature Mid-ocean Ridge Hydrothermal Flux Estimates from Sr-transport Modeling of Fluid-rock Exchange in Hole 504B, (extended abstract) Goldschmidt conference Journal of Conference Abstracts Volume 5(2), 987, Cambridge Publications, Oxford, UK.
Robinson, P.T., et al., 2001. Lower oceanic crust formed at an ultra-slow-spreading ridge:
       Ocean Drilling Program Hole 735B, Southwest Indian Ridge. In Dilek, Y.,
       Moores, E., Elthon, D., and Nicolas, A. (Eds.), Ophiolites and Oceanic Crust:
       New Insights from Field Studies and the Ocean Drilling Program, Spec.
       Pap. Geol. Soc. Am., 349:75-86.
1999.
Alt, J.C., Hydrothermal alteration of the oceanic crust: Mineralogy, geochemistry and processes. In: Vocanic Associated Massive Sulfide Deposits, Reviews In Economic Geology, vol. 8, Barrie, T., and Hannington, M. eds., Soc. Econ. Geol. Chelsea, MI, 133-155.
Alt, J.C., Very Low Grade Hydrothermal Metamorphism of Basic Igneous Rocks. In: Very Low Grade Metamorphism. M. Frey and D. Robinson, eds., Blackwell Scientific, pp. 169-201.
Fisk, M. and Leg 185 Shipboard Scientific Party.  New Shipboard Laboratory May Answer Questions about Deep Biosphere.  EOS, 80, 580..
Alt, J.C. and D.A. H. Teagle. Uptake of carbon during alteration of oceanic crust. Geochim. Cosmochim. Acta, 63, 1527-1535.
Rehkamper, M. A.N. Halliday, J. Alt, J.G. Fitton, J. Zipfel, and E. Takazawa, Non-Chondritic Platinum-Group Element Ratios in Abyssal Peridotites: Petrogenetic Signature of Melt Percolation?, Earth Planet. Sci. Lett.,172, 65-81.
Teagle, D.A.H. and J.C. Alt, Alteration and vein log of ODP Holes 917A and 918D, SE Greenland Margin, In Duncan, R.A. H.C. Larsen, J.F. Allan eds., Proc. ODP Sci. Results, 163. 
1998
Alt, J.C. and W.C. Shanks, Sulfur in serpentinized oceanic peridotites:  Serpentinization processes and microbial sulfate reduction, J. Geophys. Res., 103, 9917-9929.
Alt, J.C., D.A.H. Teagle,T.S. Brewer, W.C. Shanks, and A.N. Halliday,  Alteration and mineralization of an oceanic forearc and the ophiolite-ocean crust analogy,  J. Geophys. Res., 103, 12,365-12,380.
Teagle, D.A.H., J.C. Alt, and A.N. Halliday, Tracing the chemical evolution of fluids during hydrothermal recharge: Constraints from anhydrite recovered in ODP Hole 504B, Earth Planet. Sci. Lett., 155, 167-182.
Teagle, D.A.H., J.C. Alt, H. Chiba, S. Humphris, and A.N. Halliday. Strontium and oxygen isotopic constraints on fluid mixing, alteration and mineralization in the TAG hydrothermal deposit.  Chem. Geol. 149, 1-24
Teagle, D.A.H., J.C. Alt and A.N. Halliday.  Tracing the evolution of hydrothermal fluids in the upper oceanic crust: Sr isotopic constraints from DSDP/ODP Holes 504B and 896A, in: Modern Ocean-Floor Processes and the Geological Record, R.A. Mills and K. Harrison, eds, Geol. Soc. Lond. Spec. Pub. 148, pp. 81-97.
1997
Alt, J.C., and Teagle, D.A.H.,  Probing the TAG hydrothermal mound and stockwork: Oxygen isotopic profiles from deep ocean drilling, In: Humphris, S.E., Herzig, P.M., Miller, D.J., Zierenberg, R. (Eds.), Proc. ODP, Sci. Results, 158: College Station, TX (Ocean Drilling Program), 285-294.
Honnorez, J.C. Alt, and S. Humphris. Vivisection and autopsy of active and fossil hydrothermal alterations of basalt beneath and within the TAG hydrothermal mound. In: Humphris, S.E., Herzig, P.M., Miller, D.J., Zierenberg, R. (Eds.), Proc. ODP, Sci. Results, 158: College Station, TX (Ocean Drilling Program), 231-254.
Humphris, S.E., J.C. Alt, D.A.H. Teagle, and J. Honnorez.  Geochemical changes during hydrothermal alteration of basement in the stockwork beneath the active TAG Hydrothermal mound.  In: Humphris, S.E., Herzig, P.M., Miller, D.J., Zierenberg, R. (Eds.), Proc. ODP, Sci. Results, 158: College Station, TX (Ocean Drilling Program), 255-276.
Teagle, D.A.H., J.C. Alt, S.H. Humphris and A.N. Halliday.  Dissecting an active hydrothermal deposit: The strontium and oxygen isotopic anatomy of the TAG hydrothermal mound - whole rock and silicate minerals.  In: Humphris, S.E., Herzig, P.M., Miller, D.J., Zierenberg, R. (Eds.), Proc. ODP, Sci. Results, 158: College Station, TX (Ocean Drilling Program), 297-312.
Teagle, D.A.H., J.C. Alt, H. Chiba, and A.N. Halliday.  Dissecting an active hydrothermal deposit: The strontium and oxygen isotopic anatomy of the TAG hydrothermal mound - Anhydrite.  In: Humphris, S.E., Herzig, P.M., Miller, D.J., Zierenberg, R. (Eds.), Proc. ODP, Sci. Results, 158: College Station, TX (Ocean Drilling Program), 129-142.
1996
Alt, J.C., D.A.H. Teagle, C. Laverne, D. Vanko, W. Bach, J. Honnorez,  K. Becker, M. Ayadi, and P.A. Pezard.  Ridge flank alteration of upper ocean crust in the eastern Pacific:  A synthesis of results for volcanic rocks of holes 504B and 896A. In: Alt, J.C., Kinoshita, H., Stokking, L.B., and Michael, P.,J. (Eds.), Proc. ODP, Sci.Results, 148: College Station, TX (Ocean Drilling Program, 435-452).
Alt, J.C., C. Laverne, D. Vanko, P. Tartarotti, D.A.H. Teagle, W. Bach, E. Zuleger, J. Erzinger, J. Honnorez, P.A. Pezard, K. Becker, M. H. Salisbury, and R.H. Wilkens.  Hydrothermal alteration of a section of upper oceanic crust in the eastern equatorial Pacific: A synthesis of results from Site 504 (DSDP legs 69, 70, and 83, and ODP legs 111, 137, 140, and 148). In: Alt, J.C., Kinoshita, H., Stokking, L., and Michael, P., et al., Proc. ODP, Sci. Results, 148: College Station, TX (Ocean Drilling Program), 417-434.
Alt, J.C., D.A.H. Teagle, W. Bach, A.N. Halliday, and J. Erzinger.  Stable and strontium isotopic profiles through hydrothermally altered upper oceanic crust, ODP Hole 504B. In Alt, J.C., Kinoshita, H., Stokking, L., and Michael, P., Proc. ODP, Sci. Results, 148, College Station, TX (Ocean Drilling Program), 47-70.
Alt, J.C., Kinoshita, H., Stokking, L., and Michael, P., Proc.  ODP, Scientific Results, 148, ODP, College Station, TX, 512 pp.
Bach, W., J. Erzinger, J. Alt, and D.Teagle.  Chemistry of the lower sheeted dike complex, ODP Hole 504B: The influence of magmatic differentiation and hydrothermal alteration.  In Alt, J.C., Kinoshita, H., Stokking, L., and Michael, P., Proc. ODP, Sci. Results, 148,College Station, TX (Ocean Drilling Program), 39-56.
Mills, R. A.,  T. Clayton and J.C. Alt.  Low-temperature fluid flow through sulfidic sediments from TAG: modification of fluid chemistry and alteraion of mineral deposits. Geophys. Res. Lett., 23: 3495-3498.
Teagle, D.A.H., J.C. Alt, W. Bach, A.N.Halliday, and J. Erzinger. Alteration of upper oceanic crust in a ridge flank hydrothermal upflow zone: Mineral, chemical and isotopic constraints from ODP Hole 896A.  In Alt, J.C., Kinoshita, H., Stokking, L., and Michael, P., Proc. ODP, Sci. Results, 148,College Station, TX (Ocean Drilling Program), 119-150.
Vanko, D.A., C. Laverne, P. Tartarotti, and J. C. Alt. Chemistry and origin of secondary minerals from the deep sheeted dikes cored during ODP Leg 148, Hole 504B.  In Alt, J.C., Kinoshita, H., Stokking, L., and Michael, P., Proc. ODP, Sci. Results, 148, College Station, TX (Ocean Drilling Program), 71086.
Zuleger, E., J.C. Alt and J. Erzinger.  Trace element geochemistry of the lower sheeted dike complex: Hole 504B, Leg 140.  In Alt, J.C., Kinoshita, H., Stokking, L., and Michael, P., Proc. ODP, Sci. Results, 148,College Station, TX (Ocean Drilling Program), 455-466.
1995
Alt, J.C.  Subseafloor processes in mid-ocean ridge hydrothermal systems. In: Humphris, S., J. Lupton, L. Mullineaux, and R. Zierenberg, eds., Seafloor hydrothermal Systems: , Physical, Chemical, and Biological Interactions,  Geophys. Monogr. 91, AGU, Wash. DC; 85-114.
Alt, J.C.  Sulfur Isotopic Profile through the Oceanic Crust: Sulfur mobility and seawater-crustal sulfur exchange during hydrothermal alteration. Geology, 23: 585-588.
Humphris, S.H., P.M. Herzig, D.J. Miller, J.C. Alt, et al., The internal structure of an active seafloor massive sulfide deposit, Nature, 377: 713-716.
Kadko, D., J. Baross, and J.C. Alt. Hydrothermal fluxes and global change.  In: Humphris, S., J. Lupton, L. Mullineaux, and R. Zierenberg, eds., Seafloor Hydrothermal Systems: , Physical, Chemical, and Biological Interactions,  Geophys. Monogr. 91, AGU, Wash. DC; 446-466.
Alt, J.C., Zuleger, E., and Erzinger, J. Stable isotopic compositions of hydrothermally altered lower sheeted dikes, ODP Hole 504B, Leg 140. In: Dick, Erzinger, Stokking et al., Proc. ODP, Scientific Results, V. 140; 155-166.
Appold, M., Kesler, S., and Alt, J.  Geochemical constraints on the genesis of Mississippi Valley-type mineralization in the central Appalachians, Econ. Geol.90: 902-919.
Laverne, C., J.C. Alt, P. Tartarotti, and D. Vanko. Chemistry and geothermometry of secondary minerals from the deep sheeted dike complex, Hole 504B, Leg 140. In: Dick, Erzinger, Stokking et al., Proc. ODP, Scientific Results, V. 140; 167-191.
Zuleger, E., J.C. Alt, and J. Erzinger. Primary and secondary variations in major and trace element geochemistry of the lower sheeted dike complex, ODP Hole 504B, Leg 140. In: Dick, Erzinger, Stokking et al., Proc. ODP, Sci. Results, V. 140; 65-80.   
Fisk, M.R., K.T.M. Johnson, and J.C. Alt. The effect of assimilation of altered oceanic crust on magma chemistry: an experimental study.  In:  Dick, Erzinger, Stokking et al., Proc. ODP, Scientific Results, V. 140; 43-52.
Magenheim, A.J., A.J. Spivack, J.C. Alt, G. Bayhurst, and J.M. Gieskes. Borehole fluid chemistry in Hole 504B, Leg 137: Formation water or in-situ reaction?  In: Dick, Erzinger, Stokking et al., Proc. ODP, Scientific Results, V. 140; 141-154.
1994
Alt, J.C. A sulfur isotopic profile through the Troodos Ophiolite, Cyprus: Primary composition and the effects of seawater hydrothermal alteration. Geochim. Cosmochim. Acta, 58: 1825-1840.
1993
Alt, J.C., W.C. Shanks, and M.C. Jackson. Cycling of sulfur in subduction zones: The geochemistry of sulfur in the Mariana Island Arc and back-arc Trough. Earth Planet. Sci. Lett. 119: 477-494.
Alt, J.C.  Low-temperature alteration of basalts from the Hawaiian Arch, ODP leg 136. Proc. ODP, Sci. Results, 136: College Station, TX (Ocean Drilling Program), 133-146.
Alt, J.C., Kinoshita, H., Stokking, L., et al., Proc. ODP, Init. Results 148 (Ocean Drilling Program) 352 pp.
Alt, J.C., H. Kinoshita, L. Stokking, and the Leg 148 Scientific party. ODP Leg 148 barely misses deepest layer. EOS, Trans. AGU, 74: 489-494.
1992
Alt, J.C., C.F. Lanord, P.A. Floyd, P. Castillo, and A. Galy. Low-temperature hydrothermal alteration of Jurassic ocean crust, Site 801. In: R.L. Larson, Y. Lancelot et al., Proc. ODP, Scientific Results, v. 129, College Station, TX (Ocean Drilling Program): 415-427
Alt, J.C. and J.W. Burdett. Sulfur in Pacific Deep sea sediments (Leg 129) and implications for cycling of sulfur in subduction zones,  In: R.L. Larson,, Y. Lancelot et al., Proc. ODP, Scientific Results, v. 129, College Station, TX (Ocean Drilling Program): 283-294.
Boni, M., J.C. Alt, G. Balassone, and A. Russo. A reappraisal of the stratabound ores at the mid-Ordovician unconformity in SW Sardinia. In: L. Carmignani and F.P. Sassi, eds., Contributions to the Geology of Italy with Special Reference to Paleozoic basement. IGCP No 276, v. 5: 57-60.
Castillo, P.R., P.A. Floyd, C.F. Lanord, and J.C. Alt. Summary of geochemical data for Leg 129 Igneous rocks.  In: R.L. Larson,, Y. Lancelot et al., Proc. ODP, Scientific Results, v. 129, College Station, TX (Ocean Drilling Program): 653-670.
Magenheim, A.J., G. Bayhurst, J.C. Alt, and J.M. Geiskes. ODP Leg 137, Borehole fluid chemistry in Hole 504B. Geophys. Res. Lett., 19: 521-524.
Magneheim, A.J., J.M. Geiskes, G. Bayhurst, and J.C. Alt.  Oceanic borehole fluid chemistry from Site 504B: Seawater rock reaction within the borehole environment. In: Water-rock interaction, Proc. 7th Internat. Symp. on Water-Rock Interaction, Y.K. Kharaka and A.S. Maest, eds., A.A. Balkema (Rotterdam), p. 1655-1658.
Mottl, M.J., and J.C. Alt.  Minor and trace element and sulfur isotopic composition of pore waters from Sites 778 through 786.  Pearce, J.A., Fryer, P., et al., Pearce, J.A., Fryer, P., et al., Proc. ODP, Sci. Results, 125, College Station, TX (Ocean Drilling Program):683-688.
Pezard, P., R.N. Anderson, W.B.F. Ryan, K. Becker, J.C. Alt, and P. Gente. Accretion, structure and hydrology of intermediate spreading-rate oceanic crust from drillhole experiments and seafloor observations. Mar. Geophys. Res., 14: 93-123.
1991
Alt, J.C.  A sulfur isotopic profile through the Troodos Ophiolite, Cyprus:  Preliminary results and implications.  Tj. Peters et al. (Eds), Ophiolite genesis and evolution of oceanic lithosphere, Kluwer (Dordrecht), p. 427-443.
Alt, J.C., and T.F. Anderson, The mineralogy and isotopic composition of sulfur in Layer 3 gabbros from the Indian Ocean, ODP Hole 735B.  Von Herzen, R.P., Robinson, P.T., et al., Proc. ODP, Scientific Results, 118:113-125.
Alt, J.C., and W.T. Jiang.  Hydrothermally precipitated mixed-layer illite-smectite in recent massive sulfide deposits from the seafloor.  Geology, 19: 570-573.
Weissel, J. Pierce, J., Taylor, E., Alt, J., et al. Proc ODP Sci. Results, 121: College Station, TX (Ocean Drilling Program), 990 pp.
1990
Anderson, R.N., J.C. Alt, J. Malpas, M. Lovell, P.K. Harvey, and E.L. Pratson.  Geochemical well logging in basalts:  The Palisades Diabase Sill and the oceanic crust of Hole 504B, eastern equatorial Pacific.  Jour. Geophys. Res., 95: 9265-9242.
Hannington, M., P. Herzig, and J.C. Alt.  The distribution of gold in sub-seafloor stockwork mineralization from DSDP Hole 504B and the Agrokipla B deposit, Cyprus.  Can. J. Earth Sci., 27: 1409-1417.
1989
Alt, J.C., T.F. Anderson, and L. Bonnell, The geochemistry of sulfur in a 1.3km section of hydrothermally altered oceanic crust, DSDP Hole 504B.  Geochim. Cosmochim. Acta, 53: 1011-1023.
Alt, J.C., and M. Chaussidon, Ion microprobe analysis of the sulfur isotopic composition of sulfides in hydrothermally altered rocks, DSDP/ODP Hole 504B.  Becker, K., Sakai, H., et al., Part B Proceedings of the Ocean Drilling Program, vol. 111; 41-45.
Alt, J.C., T.F. Anderson, L. Bonnell, and K. Muehlenbachs, The mineralogy, chemistry and stable isotopic compositions of hydrothermally altered sheeted dikes:  ODP Hole 504B, Leg 111.  Becker, K., Sakai, H., et al., Part B Proceedings of the Ocean Drilling Program, vol. 111; 27-40.
Becker, K., H. Sakai, et al., Ground-truth from the young oceanic crust at Hole 504B:  Summary of results from DSDP/ODP Legs 69, 70, 83, 92, and 111.  Rev. Geophys., 27; 79-102.
Laverne, C., J. Honnorez, and J. Alt, Transition entre l'alteration Ö basse temperature et l'alteration hydrothermale de la croute oceanique:  Etude petrographique et geochimique du puits 504B, Est Pacifique.  Bull. Geol. Soc. France, 8; 327-337.
Anderson, R.N., J.C. Alt, and J. Malpas, Geochemical well logs and the determination of integrated chemical fluxes in Hole 504B, Eastern Equatorial Pacific.  Becker, K., Sakai, H., et al., Part B Proceedings of the Ocean Drilling Program, vol. 111; 119-132.
1988
Alt, J.C., Hydrothermal oxide and nontronite deposits on seamounts in the eastern Pacific, Mar. Geol., 81, p. 227-239.
Alt, J.C., The chemistry and sulfur isotopic composition of massive sulfide and associated deposits on Green Seamount, Eastern Pacific, Econ. Geol., 83, p. 1026-1033.
1987
Alt, J.C., Lonsdale, P., Haymon, R., and Muehlenbachs, K., Hydrothermal sulfide and oxide deposits on seamounts near 21˚N, East Pacific Rise, Geol. Soc. Am. Bull., v. 98; 157-168.
Leg 111 Scientific Party, Costa Rica Rift hole deepened and logged, Geotimes, 32; 14-16.
1986
Alt, J.C., Honnorez, J., Laverne, L., and Emmermann, R., Hydrothermal alteration of a 1 km section through the upper oceanic crust, DSDP Hole 504B:  The mineralogy, chemistry, and evolution of seawater-basalt interactions.  Jour. Geophys. Res., v. 91, p. 10,309-10,335.
Alt, J.C., Muehlenbachs, K., and Honnorez, J., An oxygen isotopic profile through the upper kilometer of the oceanic crust, DSDP Hole 504B.  Earth Planet. Sci. Lett., v. 80, p. 217-229.
1985
Alt, J.C., Laverne, C., and Muehlenbachs, K., Alteration of the upper oceanic crust:  Mineralogy and processes in DSDP Hole 504B, Leg 83.  DSDP Initial Reports, v. 83, 217-248.
Alt, J.C., and Emmermann, R., Geochemistry of hydrothermally altered basalts, DSDP Hole 504B, Leg 83, DSDP Initial Reports, v. 83, 249-262.
Alt, J.C., Saltzman, E.S., and Price, D.A., Anhydrite in hydrothermally altered basalts:  DSDP Hole 504B, Leg 83.  DSDP Initial Reports, v. 83, 283-288.
Honnorez, J., Alt, J.C., Honnorez-Guerstein, B.M., Laverne, C., Muehlenbachs, K., Ruiz, J., and Saltzman, E.S., Stockwork-like sulfide mineralization in young oceanic crust:  DSDP Hole 504B.  DSDP Initial Reports, v. 83, 263-282.
1984
Alt, J.C., and Honnorez, J., Alteration of the Upper Oceanic Crust:  DSDP Site 417.  Mineralogy and Chemistry.  Contrib. Mineral. Petrol., 37; 149-169.
Bohlke, J.K., Alt, J.C., and Muehlenbachs, K., Oxygen Isotope-Water Relationships in Altered Deep-Sea Basalts:  Low Temperature Mineralogical Controls, Can. J. Earth Sci., 21; 67-77.
1983
Alt, J.C., Honnorez, J., Hubberten, H.-W., and Saltzman, E.S., Occurrence and Origin of Anhydrite from DSDP Leg 70, Hole 504B, Costa Rica Rift, in Cann, J.R., Langseth, M.D., Honnorez, J., von Herzen, R.P., White, S.M., et al., Init. Repts. DSDP, 69:  Washington (U.S. Government Printing Office), 547-550.
Anderson, R.N., Honnorez, J., Becker, et al., Une coupe de reference de la croute oceanique:  le leg 83 du programme international de forages oceanique profonds (IPOD) au voisinage du rift de Costa Rica, Pacifique Oriental.  C.R. Acad. Sc. Paris, 296:  281-286.
1982
Anderson, R.N., Honnorez, J., Becker, K. et al., Challenger Drills Deep Into Basement, Geotimes, vol. 27, no. 5, 26-28.
Anderson, R.N., Honnorez, J., Becker, et al., DSDP Hole 504B, The First Reference Section Over 1 km through Layer 2 of the Oceanic Crust, Nature, vol. 3000, no. 5893, 589-594.
Becker, K., et al., In situ Electrical Resistivity and Bulk Porosity of the Oceanic Crust, Costa Rica Rift, Nature, vol. 3000, no. 5893, 594-598.

ABSTRACTS AND UNPUBLISHED REPORTS
2004.
Nielsen, S.G., M. Rehkamper, J. Alt, D. Butterfield, K. Haase, A. N. Halliday, J. Ishibashi, K. Okamura, Y. Sohrin..  An elemental and isotopic study of the marine geochemistry of thallium.  AGU Ocean Sciences meeting, abstract
2003. 
Alt, J. C. anmd W.S. Shanks. Hydration And Sulfur Metasomatism of Forearc Mantle, Geol. Soc. Am. Ann. Mtg, Program with Abstracts, Paper No. 60-10 (abstrac)
LAVERNE, C., ALT, J.C., BANERJEE, N.R. , COGGON, R., TEAGLE, D.A.H., WILSON, D.S. , ACTON, G.D., LEG 206 SHIPBOARD SCIENTIFIC PARTY Le puits DSDP/ODP 504b a eu un petit frère: naissance du puits ODP/IPOD 1256D dans le bassin du Guatemala en Décembre 2002. Altération de la croûte océanique, Eur. Union Geos. (abstract)

King. L.E., D.A. Teagle, M.J. Cooper, J.C. Alt, Sr Isotopic Constraints from the CCSP CY-4 Drill Hole, Troodos Ophiolite, Cyprus. EOS Trans AGU, V21D-0548 (Abstract)
Wilson, D.W., D.A.H. Teagle, G.D. Acton and the Leg 206 Scientific Party.  First Results From Hole 1256D - a New Ocean-Crust Reference Hole Drilled in Fast-Spread Crust During ODP Leg 206, EOS Trans AGU, U12A-02 (abstract)
Teagle, D.A., R.M. Coggon, J.C. Alt, and G.Davidson. Strontium and Oxygen Isotopic Profiles Through a Complete Sequence of Oceanic Crust Exposed on Macquarie Island. EOS Trans AGU, V22F-08, (abstract)
2002
Core, D.P., Essene, E., Kesler, S., And Alt, J. C. Stability Of S-Bearing Apatite And Biotite, Geol. Soc. Am. Ann Mtg,, Paper No. 234-10 (Abstract)
Shanks, W. C. III, Balistrieri, L., Alt, J., Morgan, L., Meeker, G., Rye, R., And Schwartz, C., Hydrothermal Vents And Sublacustrine Siliceous Spires In Yellowstone Lake, Geol. Soc. Am. Ann Mtg,, Paper No. 228-11 (Abstract)
2001
Alt, J C, Davidson, G Teagle, D A, Isotopic Studies of Gypsum in the Macquarie Island Ophiolite: Tracing Hydrothermal Reactions, AGU Fall meeting, Abstract.
Alt, J.C., Davidson, G., and Teagle, D.A.H., Isotopic Compositions of Gypsum in the Macquarie Island Ophiolite:  Tracing Hydrothermal Reactions, abstract, GSA annual meeting, 2001, http://gsa.confex.com/gsa/2001AM/finalprogram/abstract_27699.htm
Bach, W., Alt, J.C., and Humphris, S.E., A Geochemical And Isotopic Study Of The Magmatic-Hydrothermal Transition In The Lower Oceanic Crust (ODP Hole 735B), abstract,  GSA annual meeting, 2001, http://gsa.confex.com/gsa/2001AM/finalprogram/abstract_28350.htm
Davidson, G., J.C. Alt, R. Varne, and A.V. Brown, 2001. The Effect of Increased Slow Spreading Extension On The Ocean Crust Dike/Basalt Hydrothermal Sulfur Anomaly (Macquarie Island, Southern Ocean). Abstract, GSA Annual meeting. http://gsa.confex.com/gsa/2001AM/finalprogram/abstract_24333.htm
Farr, L C , Plank, T , Kelley, K , Alt, J C , U Mineral Hosts and Enrichment Processes in Altered Oceanic Crust. AGU Fall meeting, Abstract.
 Teagle, D A , Bickle, M J, Alt, J.C., Ridge-Flank Hydrothermal Circulation is not a Cure for the Imbalance in Oceanic Sr-Isotope Budgets, Abstract AGU ann mtg,
  Valentine, R B, Alt, J C, Morris, J D, Kelley, K A,  Lithium Budget and Isotopic Characterization of Materials Entering the Izu-Mariana Subduction Zone. Abstact, AGU fall meeting.

2000
Alt and Mata, A TEM Study of Altered Submarine Basaltic Glass:  Are Microbes Responsible? RIDGE Theoretical Institute, Subsurface biosphere in ocean crust, Big Sky Montana.
R.E. Blake, J.C. Alt,  and  N. Moreira,  d18O of Phosphate:  A Geochemical Fingerprint for Biological Activity, EOS Trans AGU.
Kelley, K., Plank, T., Farr, L., Ludden, J., Staudigel, H., and Alt, J., Subduction cycling of altered oceanic crust: U, Th and Pb budgets. EOS Trans AGU
1999
Bach, W., Niu, Y., Alt, J.C., and Humphris, S.E. (1999) Alteration of oceanic troctolites by magmatic fluids in Ocean Drilling Program Hole 735B? in Ninth Annual V.M. Goldschmidt Conference, pp. 15-16. LPI Contribution No. 971, Lunar and Planetary Institute, Houston.
Halliday, A N, W. yi, J.C. Alt, D.C. Lee, D. A. Teagle, C.H. Langmuir, M.O. Garcia, and M. Rehkamper, Trace chalcophile element geochemistry of the Earth, EOS, Trans AGU. (abstract)
Shipboard Scientific Party, Leg 185, Drilling Input to the Subduction Factory: ODP Leg 185.  MARGINS Newsletter, vX. 
Fisk, M., and Leg 185 Shipboard Scientific Party,. Evidence of Microbial Activity in the Oldest Ocean Crust, EOS.
Larson, R.L., and Leg 185 Shipboard Scientific Party.  Multiple Reversals and/or Intensity Fluctuations in the Jurassic Magnetic Quiet Zone (JQZ) Measured by Downhole Logging in ODP Hole 801C, EOS.
Murray,  and Leg 185 Shipboard Scientific Party, 1999.Dispersed Volcanic Ash in Marine Sediments, EOS.
Smith, D., and Leg 185 Shipboard Scientific Party. Evaluation of Drilling Induced Contamination of Deep Sea Sediments and Volcanic Rocks for Microbiological Studies on the Drillship JOIDES Resolution, EOS.
Steiner, M., and Leg 185 Shipboard Scientific Party.  Finally! Origin(s) of the Jurassic Quiet Zone (JQZ), EOS.
M. Rehkämper, A. N. Halliday, J. Alt, J. G. Fitton, J. Zipfel, E. Takazawa, Non-Chondritic Platinum-Group Element Ratios in Abyssal Peridotites: Petrogenetic Signature of Melt Percolation?, EUG, Strasbourg. 
1998
Alt, J.C. and W.C. Shanks, Uptake of sulfur during serpentinization of abyssal peridotites, EOS, Trans. AGU.
M. Rehkämper, A. N. Halliday, J. Alt, J. G. Fitton, J. Zipfel, E. Takazawa Non-Chondritic Platinum-Group Element Ratios in Abyssal Peridotites:  Petrogenetic Signature or Evidence for Core-Mantle Interaction ?, EOS, Trans AGU.
Shanks, W.C., L. Balistrieri, J. Alt, A. Meier, and D. Lovalvo, Geology and geochemistry of hydrothermal systems in Yellowstone Lake, Yellowstone 125th Anniversary Symposium Abstracts, p. 52.
1997
Shanks, W.C. III, J. Alt, A. Meier, and V. Klump.  Geochemical Studies of Hydrothermal Deposits Related to Sublacustrine Hydrothermal Vents in Yellowstone Lake.   EOS, Trans. AGU.
Teagle, D.A.H., J.C. Alt and J.C.G. Walker. The Influence of Hydrothermal Circulation at Mid-ocean ridges on the Oxygen Isotopic Composition of Seawater Sulfate.   EOS, Trans. AGU.
Teagle, D.A.H., J.C. Alt, and A.N. Halliday, Tracing the evolution of hydrothermal fluids in the upper oceanic crust: Constraints from DSDP/ODP Hole 504B, Geol. Soc. Lond. May 1997.
Teagle, D.A.H., J.C. Alt, A.N. Halliday, H. Chiba, and S. Humphris, Dissecting an active hydrothermal deposit: The strontium and oxygen isotopic anatomy of the TAG mound, in Modern ocean-floor processes and the geological record, Geol. Soc. Lond. May 1997.
Teagle, D.A.H., J.C. Alt, and the Leg 169 Shipboard Scientific Party, Alteration of basalts from the Bent Hill massive sulfide deposit, Ninth Internat. Symp. Water-Rock Interact., Taupo, New Zealand.
Yi, W., A.N. Halliday, M. Garcia, C. Langmuir, J. Alt, D.C. Lee.  Tellurium, Cadmium and sulfur in oceanic basalts and chalcophile element fractionation in the mantle. EOS, Trans. AGU
1996     
Alt, J.C. Upper crustal hydrothermal systems: Progress and problems. In: The oceanic lithosphere and scientific drilling into the 21st century, ODP-Interridge-IAVCEI workshop report, Woods Hole, MA. p. 23.
Alt, J.C. and D.A.H. Teagle. Probing the TAG Hydrothemal mound and stockwork: Oxygen isotope profiles from deep ocean drilling. EOS, Trans. AGU, 77, F764.
Chan, L., J.C. Alt, and D.A.H. Teagle. Alterations of the upper 1.8 km of oceanic crust: A lithium isotope record at ODP Site 504B. EOS, Trans. AGU, 77, F805.
Honnorez, J.C. Alt, and S. Humphris. Active and fossil hydrothermal alteratinos of basalt beneath and within the TAG hydrothermal mound. EOS, Trans. AGU, 77, F763.
Humphris, S.E., J.C. Alt, D.A.H. Teagle, and J. Honnorez. Geochemical changes during hydrothermal alteration of basement in the stockwork beneath the TAG active hydrothermal mound, ODP Leg 158. EOS, Trans. AGU, 77, F764.
Teagle, D.A.H., J.C. Alt, and A.N. Halliday. Dissecting an active hydrothermal deposit: The strontium and oxygen isotopic anatomy of the TAG hydrothermal mound. EOS, Trans. AGU, 77, F764.
Teagle, D.A.H., J.Alt, and A. Halliday. Tracingthe chemical evolution of hydrothermal fluids during recharge as recorded by anhydrite from DSDP/ODP Hole 504B. In: The oceanic lithosphere and scientific drilling into the 21st century, ODP-Interridge-IAVCEI workshop report, Woods Hole, MA. p. 110.
1995
Alt, J.C., and T.S. Brewer, Submarine alteration and mineralization of volcanic basement from the Izu-Bonin forearc: comparison with MORB and ophiolite sections, EOS, Trans. AGU, 76: F710.
Teagle, D.A.H., J.C. Alt, and A.N. Halliday, Tracing the chemical evolution of hydrothermal fluids during recharge as recorded by anhydrite from Hole 504B, EOS, Trans. AGU, 76: F709.
Alt, J.C., and Teagle, D.A.H.,  Measurement of Fractures in the Upper Oceanic Crust. In: Faulting and Magmatism at Mid-Ocean Ridges, RIDGE Thoretical Institute short course notes: O, p.4 (abstract).
1994
Alt, J.C., D.A.H. Teagle, W. Bach, A.N. Halliday, and J. Erzinger, Alteration in a ridge flank hydrothermal upflow zone: Strontium and oxygen isotopic constraints from ODP Hole 896A. EOS, Trans. AGU, 75: 706 (abstract)
Teagle, D.A.H., J.C. Alt, W. Bach, A.N.Halliday, and J. Erzinger, Tracing fluid-rock interaction in the upper oceanic crust: Strontium isotopic constraints from DSDP/ODP Hole 504B,  EOS, Trans. AGU, 75: 707 (abstract).
Bickle, M.J., J.C. Alt and D.A.H. Teagle.  Sulphur transport and sulphur isotope fractionation in ocean floor hydrothermal systems. Gosdschmidt Conference, Edinburgh. (abstract)
 1993
Alt, J.C. and the Leg 148 Scientific Party. Probing the Layer 2/Layer 3 Transition in Hole 504B, ODP Leg 148.  EOS Trans. AGU. v. 74 no 43: 645 (abstract).
Alt, J.C. Subseafloor processes affecting mineralization.  RIDGE Theoretical Institute Short Course, Physical, Chemical, Biological and Geological Interactions within Seafloor Hydrothermal Systems, Big Sky, MT: H1-H2.
Dick, H.J.B., J. Erzinger, L. Stokking, and the Leg 140 Scientific Party. Drilling to the Layer 2-3 boundary at Hole 504B.  EOS Trans. AGU. v. 74 no 43: 604 (abstract).
Fisk, M.R., R.L. Nielsen, and the Leg 148 Shipboard Scientific Party. Cumulates in the     oceanic crust: an estimate of mineral abundance and bulk composition.  EOS Trans. AGU. v. 74 no 43: 645 (abstract).
Laverne, C., P. Tartarotti, J.C. Alt, D.A. Vanko, and the ODP Leg 140 shipboard party. Chemistry and geothermometry of amphibole, chlorite, and mixed-layer chlorite-smectite from the deep sheeted dike complex, DSDP-ODP Hole 504B (Eastern Pacific). European Union of Geosciences VII, Strasbourg, France (abstract).
McNeill, A.W., and the Legs 140 and 148 shipboard scientific parties. ODP Legs 140 and 148: Deepening the Hole 504B "Reference Section" to the layer2/3 transition. IAVCEI (abstract), Canberrra, Australia.
Vanko, D., C. Laverne, P. Tartarotti, and J.C. Alt. Alteration minerals in the lower sheted dikes, Hole 504B: Increased T and Ca-enriched fluids on-axis at the base of Layer 2. EOS Trans. AGU,  v. 74 no 43: 645 (abstract).
1992
Alt, J.C. Hydrothermal alteration of a 2 km reference section of upper ocean crust, DSDP/ODP Hole 504B. IGCP Project 294: Very low grade metamorphism. The transition from basalt to metabasalt: Environments, processes, and petrogenesis. Abstracts and program, p. 6.
Alt, J.C., and D. Vanko. Hydrothermal alteration of the lower sheeted dike complex, ODP Hole 504B: approaching the dike-gabbro transition. EOS, Trans. AGU. 73, no. 43: 255 (abstract).
Appold, M.S., S.E. Kesler, and J.C. Alt. Sulfur isotopic study of Missippi-Valley-Type mineralization in the central and southern Applachians. Geol. Soc. Am. Ann. Mtg., Abstracts with Programs, (abstract).
Pezard, P., R.N. Anderson, W.B.F. Ryan, K. Becker, J.C. Alt, and P. Gente. Accretion, structure and hydrology of intermediate spreading-rate oceanic crust and the role of massive flows. EOS, Trans. AGU 73, no. 14,:274 (abstract)
Magenheim, A.J., J.M. Gieskes, G. Bayhurst, and J.C. Alt. Oceanic borehole fluid chemistry from Site 504B: Seawater-rock reaction within the borehole environment. Seventh Internat. Symp. Water-Rock Interact., Parks City, Utah (abstract).
Vanko, D.A., H.J.B. Dick, J.C. Alt, D.S. Kelley, and Leg 140 Shipboard Party. Hydrothermal alteration deep within sheeted dikes, DSDP/ODP Hole 504B, Eastern EquatorialPacific. RIDGE theoretical institute, Tucson, AX, Abstracts, p. 29 (abstract).
1991
Alt, J.C., C. France-Lanord, A. Galy, P.A. Floyd and P. Castillo.  Low temperature hydrothermal alteration of Jurassic ocean crust.  EOS Trans. AGU, 72:453 (abstract).
Alt, J.C., and J.W. Burdett.  Sulfur in Pacific deep-sea sediments, ODP Leg 129, and implications for cycling of sediment in subduction zones.  Geol. Soc. Am. Ann. Mtg., Abstracts with Programs (Abstract).
Boni, M., J.C. Alt, G. Balassone and A. Russo, Stratabound ores at the Mid-Ordovician unconformity in SW Sardinia:  Depositional environment and isotopic characteristics.  UNESCO Symposium:  Geologia del Basamento Italiano (Abstract).
Karpoff, A.M., B.C. France-Lanard, J. Duplay, J.L. Crovisier, and J. Alt.  La paragenese d'alteration inusuelle a thaumasite des tuffs Miocenes du bassin des Mariannes (Site 802, Leg 129).  Bull. liason Soc. fr. Miner. Cristal., 2: 40 (Abstract).
Magenheim, A.J., G. Bayhurst, J.C. Alt, and J.M. Gieskes.  Borehole fluid chemistry in DSDP/ODP Hole 504B:  An investigation of in situ water/rock reaction.  EOS, Trans. AGU, 72:539 (abstract)
1990
Alt, J.C., The geochemistry of sulfur in oceanic and ophiolitic crust.  Symposium on ophiolite genesis and evolution of oceanic lithosphere.  Muscat, Oman.
Alt, J.C., A sulfur isotopic profile through the Troodos Ophiolite, Cyprus.  Geol. Soc. Am. Ann. Mtg., Abstracts with programs (Abstract).
Alt, J.C., Crustal alteration from the perspective of Ocean Drilling.  EOS, Trans. AGU (Abstract).
Boni, M., J. Alt, A. Arribas, and T. Bechstadt.  The stratabound ores of the Aracena Belt:  Depositional environment and isotopic characteristics, Eleventh Mtg:  Geology of the Western Peninsula.  Huelva, Spain (Abstract).
Jones, H.D., S.E. Kesler, and J.C. Alt, Sulfur isotopes in central Appalachian MVT mineralization.  Geol. Soc. Am. Ann. Mtg., Abstracts with programs (Abstract).
1989
Alt, J.C., and W.C. Shanks, Sources and cycling of sulfur in subduction zones:  The Mariana Island Arc and back-arc Trough.  Geol. Soc. Am. Ann. Mtg., Abstracts with programs (Abstract).
Alt, J.C., The petrology of sulfides and sulfur contents of oceanic gabbros.  Drilling the oceanic lower crust and mantle.  Woods Hole Oceanogr. Tech. Rept. WHOI-89-39 (Abstract).
1988
Alt, J.C., Hydrothermal mixed-layer illite-smectite in recent massive sulfide deposits from the seafloor.  Geol. Soc. Amer. Ann. Mtg., Abstracts with Programs (Abstract).
Alt, J.C., and T.F. Anderson, The distribution of sulfur in the oceanic crust, DSDP/ODP Holes 504B and 735B.  EOS, Trans. AGU, 69; 1402 (Abstract).
Hannington, M.D., P.M. Herzig, and J.C. Alt, The distribution of gold in sub-seafloor stockwork mineralization from DSDP Hole 504B and the Agrokipia B deposit, Cyprus, Geol. Assoc. Can. annual meeting (Abstract).
1987
Alt, J.C., T.. Anderson, L. Bonnell, Geochemistry of sulfur in hydrothermally altered seafloor rocks, Geol. Soc. Amer. Ann. Meeting, Abstracts with programs, 19(7); 570 (Abstract).
Alt, J.C., T.F. Anderson, and L. Bonnell, The mobility of sulfur during hydrothermal metamorphism of the oceanic crust, EOS, Trans. AGU, 68: 1546 (Abstract).
Allan, J.F., R. Batiza, R. Haymon, T. Smith, and J. Alt, Observed relations between fractionated basalts and hydrothermal processes on near-EPR axis seamounts, EOS, Trans. AGU, 68: 1540 (Abstract).
1986
Alt, J.C., A hydrothermal/bacterial iron deposit from a seamount near 21˚N, East Pacific Rise, Geol. Soc. Am. Ann. Mtg., Abstracts with Programs, 18(6); 526 (Abstract).
1985
Alt, J.C., Lonsdale, P., and Haymon, R., Hydrothermal deposits on seamounts near 21˚N East Pacific Rise, EOS, Trans. AGU, 66: 921 (Abstract).
1984
Alt, J.C., The structure, chemistry and evolution of a submarine hydrothermal system, DSDP Site 504, unpublished Ph.D. dissertation, University of Miami, Miami, FL, 286 pp.
Batiza, R., Castillo, P., Alt, J., Simkin, T., Vanko, D., McNutt, M., Mottl, M., Levin, L., Brett, R., ALVIN dives on four seamounts near the EPR-preliminary geologic, volcanologic and petrologic results.  EOS Trans. AGU, 65; 1078 (Abstract).
1983
Alt, J.C., Honnorez, J., Honnorez, B.-M., and Ruiz, J., Hydrothermal fluctuation and formation of a sulfide-rich stockwork mineralization, DSDP Hole 504B, EOS, Trans. AGU, 64(18): 240 (Abstract).
1982
Alt, J.C., Multi-stage Alteration of the Oceanic Crust, DSDP Hole 504B.  EOS, Trans. AGU, 63(45):  1116 (Abstract).
Alt, J.C., Honnorez, J., Hubberten, H.-W., and Saltzman, E., Anhydrite from the Oceanic Crust, DSDP Leg 70, Hole 504B, Geol. Soc. Am. Ann. Mtg., Abstracts with Programs, 14(7):  431 (Abstract).
1981
Alt, J.C., Alteration of the Upper Oceanic Crust, DSDP Site 417, M.S. Thesis, University Miami, 116 pp.
Alt, J.C., and Honnorez, J., A Model for the Aging of the Upper Oceanic Crust at Low Temperature, Geol. Soc. Am. Ann. Mtg., Abstracts with programs, 13(7):  395 (Abstract).
1980
Alt, J.C., and Honnorez, J., Extreme Heterogeneous Alteration of Layer 2 Basalts, DSDP Site 417, EOS, Trans. AGU, 61(46):  992 (Abstract).