var baker_hammond92 = "Baker, E. T., and S. R. Hammond, Hydrothermal venting and the apparent magmatic budget of the Juan de Fuca Ridge, J. Geophys. Res., 97, 34433456, 1992. ";
var baker_urabe96 = "Baker, E. T., and T. Urabe, Extensive distribution of hydrothermal plumes along the superfast-spreading East Pacific Rise, 13°50\'18°40\'S, J. Geophys. Res., 101(B4), 8685-8695, 1996. ";
var baker_etal87 = "Baker, E. T., G. J. Massoth, and R. A. Feely, Cataclysmic hydrothermal venting on the Juan de Fuca Ridge, Nature, 329, 149151, 1987. ";
var baker_etal94 = "Baker, E. T., R. A. Feely, M. J. Mottl, F. J. Sansone, C. G. Wheat, J. A. Resing, and J. E. Lupton, Hydrothermal plumes along the East Pacific Rise, 8°40\' to 11°50\'N: Plume distribution and relationship to the apparent magmatic budget, Earth Planet. Sci. Lett., 128, 117, 1994. ";
var baker_etal95 = "Baker, E. T., C. R. German, and H. Elderfield, Hydrothermal plumes over spreading-center axes: Global distributions and geological inferences, in Seafloor Hydrothermal Systems: Physical, Chemical, Biological, and Geological Interactions, Geophys. Monogr. Ser., vol. 91, edited by S. Humphris, R. Zierenberg, L. S. Mullineaux, and R. Thomson, pp. 4771, AGU, Washington, D.C., 1995. ";
var barth_mutter96 = "Barth, G. A., and J. C. Mutter, Variability in oceanic crustal thickness and structure: Multichannel seismic reflection results from the northern East Pacific Rise, J. Geophys. Res., in press, 1996. ";
var batiza96 = "Batiza, R., Magmatic segmentation of mid-ocean ridges: A review, in Tectonic, Magmatic, Hydrothermal and Biological Segmentation of Mid-Ocean Ridges, edited by C. J. MacLeod, P. A. Tyler, and C. L. Walker, Geol. Soc. Spec. Publ., London, in press, 1996. ";
var batiza_niu92 = "Batiza, R., and Y. Niu, Petrology and magma chamber processes at the East Pacific Rise ~9°30\'N, J. Geophys. Res., 97, 67796797, 1992. ";
var batiza_etal96 = "Batiza, R., Y. Niu, J. L. Karsten, W. Bolger, E. Potts, L. Norby, and R. Butler, Steady and non-steady state magma chambers below the East Pacific Rise, Geophys. Res. Lett., 23, 221224, 1996. ";
var bougault_etal90 = "Bougault, H., J. L. Charlou, Y. Fouquet, and H. D. Needham, Activité hydrothermale et structure axiale des dorsales est-Pacifique et médio-Atlantique, Oceanol. Acta, spec. vol. 10, 199207, 1990. ";
var calvert95 = "Calvert, A. J., Seismic evidence for a magma chamber beneath the slow-spreading Mid-Atlantic Ridge, Nature, 377, 411414, 1995. ";
var christeson_etal93 = "Christeson, G. L., G. M. Purdy, and K. M. M. Rohr, Structure of the northern symmetrical segment of the Juan de Fuca Ridge, Mar. Geophys. Res., 15, 219240, 1993. ";
var christeson_etal94 = "Christeson, G. L., G. M. Purdy, and G. J. Fryer, Seismic constraints on shallow crustal emplacement processes at the fast spreading East Pacific Rise, J. Geophys. Res., 99, 17,95717,973, 1994. ";
var crane85 = "Crane, K., The spacing of rift axis highs: Dependence upon diapiric processes in the underlying asthenosphere? Earth Planet. Sci. Lett., 72, 405414, 1985. ";
var cudrak_clowes93 = "Cudrak, C. F., and R. M. Clowes, Crustal structure of Endeavour Ridge segment, Juan de Fuca Ridge, from a detailed refraction survey, J. Geophys. Res., 98, 63296349, 1993. ";
var demets_etal90 = "DeMets, C., R. G. Gordon, D. F. Argus, and S. Stein, Current plate motions, Geophys. J. Int., 101, 425478, 1990. ";
var demets_etal94 = "DeMets, C., R. G. Gordon, D. F. Argus, and S. Stein, Effect of recent revisions to the geomagnetic reversal time scale on estimates of current plate motions, Geophys. Res. Lett., 21, 21912194, 1994. ";
var detrick_etal87 = "Detrick, R. S., P. Buhl, E. Vera, J. Mutter, J. Orcutt, J. Madsen, and T. Brocher, Multi-channel seismic imaging of a crustal magma chamber along the East Pacific Rise, Nature, 326, 3541, 1987. ";
var detrick_etal93 = "Detrick, R. S., A. J. Harding, G. M. Kent, J. A. Orcutt, J. C. Mutter, and P. Buhl, Seismic structure of the southern East Pacific Rise, Science, 259, 499503, 1993. ";
var detrick_etal95 = "Detrick, R. S., H. D. Needham, and V. Renard, Gravity anomalies and crustal thickness along the Mid-Atlantic Ridge between 33°N and 40°N, J. Geophys. Res., 100, 37673787, 1995. ";
var elvers_etal73 = "Elvers, D., S. P. Srivastava, K. Potter, J. Morley, and D. Solidel, Asymmetric spreading across the Juan de Fuca and Gorda rises as obtained from a detailed magnetic survey, Earth Planet. Sci. Lett., 20, 211219, 1973. ";
var embley_chadwick94 = "Embley, R. W., and W. W. Chadwick Jr., Volcanic and hydrothermal processes associated with a recent phase of seafloor spreading at the northern Cleft segment: Juan de Fuca Ridge, J. Geophys. Res., 99, 47414760, 1994. ";
var embley_etal91 = "Embley, R. W., W. W. Chadwick Jr., M. R. Perfit, and E. T. Baker, Geology of the northern Cleft segment, Juan de Fuca Ridge: Recent lava flows, sea-floor spreading, and the formation of megaplumes, Geology, 19, 771775, 1991. ";
var embley_etal95 = "Embley, R. W., W. W. Chadwick Jr., I. R. Jonasson, D. A. Butterfield, and E. T. Baker, Initial results of the rapid response to the 1993 CoAxial event: Relationships between hydrothermal and volcanic processes, Geophys. Res. Lett., 22, 143146, 1995. ";
var fornari_embley95 = "Fornari, D. J., and R. W. Embley, Tectonic and volcanic controls on hydrothermal processes at the mid-ocean ridge: An overview based on near-bottom and submersible studies, in Seafloor Hydrothermal Systems: Physical, Chemical, Biological, and Geological Interactions, Geophys. Monogr. Ser., vol. 91, edited by S. Humphris, R. Zierenberg, L. S. Mullineaux, and R. Thomson, pp. 146, AGU, Washington, D.C., 1995. ";
var fouquet_etal94 = "Fouquet, Y., J.-L. Charlou, J.-P. Donval, J. Radford-Knoery, H. Pellé, H. Ondréas, M. Ségonzac, I. Costa, N. Lourenco, and M. K. Tivey, Geological setting and comparison of the Menez Gwen and Lucky Strike vent fields at 37°17\'N and 37°50\'N on the Mid-Atlantic Ridge. Preliminary results of the DIVA1 diving cruise with Nautile (abstract), Eos Trans. AGU, 75(44), Fall Meet. Suppl., 313, 1994. ";
var francheteau_ballard83 = "Francheteau, J., and R. Ballard. The East Pacific Rise near 21°N, 13°N, and 20°S: Inferences for along-strike variability of axial processes of the Mid-Ocean Ridge, Earth Planet. Sci. Lett., 64, 93116, 1983. ";
var german_etal96 = "German, C. R., L. M. Parson, and HEAT Scientific Team, Hydrothermal exploration at the Azores Triple-Junction: Tectonic control of venting at slow-spreading ridges?, Earth Planet. Sci. Lett., 138, 93104, 1996. ";
var goff91 = "Goff, J. A., A global and regional stochastic analysis of near-ridge abyssal hill morphology, J. Geophys. Res., 96, 21,71321,737, 1991. ";
var harding_etal93 = "Harding, A. J., G. M. Kent, and J. A. Orcutt, A multichannel seismic investigation of upper crustal structure at 9°N on the East Pacific Rise: Implications for crustal accretion, J. Geophys. Res., 98, 13,92513,944, 1993. ";
var haymon_etal91 = "Haymon, R. M., D. J. Fornari, M. H. Edwards, S. Carbotte, D. Wright, and K. C. Macdonald, Hydrothermal vent distribution along the East Pacific Rise crest (9°09\'54\'N) and its relationship to magmatic and tectonic processes on fast-spreading mid-ocean ridges, Earth Planet. Sci. Lett., 104, 513534, 1991. ";
var haymon_etal93 = "Haymon, R. M., et al., Volcanic eruption of the mid-ocean ridge along the East Pacific Rise at 9°4552\'N: Direct submersible observations of seafloor phenomena associated with an eruption event in April 1991, Earth Planet. Sci. Lett., 119, 85101, 1993. ";
var hekinian_etal89 = "Hekinian, R., G. Thompson, and D. Bideau, Axial and off-axial heterogeneity of basaltic rocks from the East Pacific Rise at 12°35\'N12°51\'N and 11°26\'N11°30\'N, J. Geophys. Res., 94, 17,43717,463, 1989. ";
var helz_thomber87 = "Helz, R. T., and C. R. Thomber, Geothermometry of Kilauea Iki lava lake, Kilauea volcano, Hawaii, Bull. Volcanol., 49, 651668, 1987. ";
var hey_etal95 = "Hey, R. N., P. D. Johnson, F. Martinez, J. Korenaga, M. L. Somers, Q. J. Nuggett, T. P. LeBas, R. I. Rusby, and D. F. Naar, Plate boundary reorganization at a large-offset, rapidly propagating rift, Nature, 378, 167170, 1995. ";
var karson_rona90 = "Karson, J. A., and P. A. Rona, Block-tilting, transfer faults, and structural control of magmatic and hydrothermal processes in the TAG area, Mid-Atlantic Ridge 26°N, Geol. Soc. Am. Bull., 102, 16351645, 1990. ";
var karsten_etal90 = "Karsten, J. L., J. R. Delaney, J. M. Rhodes, and R. A. Liias, Spatial and temporal evolution of magmatic systems beneath the Endeavour segment, Juan de Fuca Ridge: Tectonic and petrologic constraints, J. Geophys. Res., 95, 19,23519,256, 1990. ";
var kent_etal93a = "Kent, G. M., A. J. Harding, and J. A. Orcutt, Distribution of magma beneath the East Pacific Rise between the Clipperton transform and the 9°17\'N deval from forward modeling of common depth point data, J. Geophys. Res., 98, 13,94513,969, 1993a. ";
var kent_etal93b = "Kent, G. M., A. J. Harding, and J. A. Orcutt, Distribution of magma beneath the East Pacific Rise near the 9°03\'N overlapping spreading center from forward modeling of common depth point data, J. Geophys. Res., 98, 13,97113,995, 1993b. ";
var kent_etal94 = "Kent, G. M., A. J. Harding, J. A. Orcutt, R. S. Detrick, J. C. Mutter, and P. Buhl, Uniform accretion of oceanic crust south of the Garrett transform at 14°15\'S on the East Pacific Rise, J. Geophys. Res., 99, 90979116, 1994. ";
var langmuir_etal86 = "Langmuir, C. H., J. F. Bender, and R. Batiza, Petrological and tectonic segmentation of the East Pacific Rise, Nature, 322, 422429, 1986. ";
var lin_phipps92 = "Lin, J., and J. Phipps Morgan, The spreading rate dependence of three-dimensional mid-ocean ridge gravity structure, Geophys. Res. Lett., 19, 1316, 1992. ";
var lonsdale89 = "Lonsdale, P., Segmentation of the Pacific-Nazca spreading center, 1°N20°S, J. Geophys. Res., 94, 12,19712,225, 1989. ";
var lowell_germanovich94 = "Lowell, R. P., and L. N. Germanovich, On the temporal evolution of high-temperature hydrothermal systems at ocean ridge crests, J. Geophys. Res., 99, 565575, 1994. ";
var lowell_germanovich95 = "Lowell, R. P., and L. N. Germanovich, Dike injection and the formation of megaplumes at ocean ridges, Science, 267, 18041807, 1995. ";
var lupton_etal93 = "Lupton, J. E., E. T. Baker, M. J. Mottl, F. J. Sansone, C. G. Wheat, J. A. Resing, G. J. Massoth, C. I. Measures, and R. A. Feely, Chemical and physical diversity of hydrothermal plumes along the East Pacific Rise, 8°45\'N to 11°50\'N, Geophys. Res. Lett., 20, 29132916, 1993. ";
var macdonald_fox88 = "Macdonald, K. C., and P. J. Fox, The axial summit graben and cross-sectional shape of the East Pacific Rise as indicators of axial magma chambers and recent volcanic eruptions, Earth Planet. Sci. Lett., 88, 119131, 1988. ";
var macdonald_etal91 = "Macdonald, K. C., D. S. Scheirer, and S. M. Carbotte, Mid-ocean ridges: Discontinuities, segments, and giant cracks, Science, 253, 986994, 1991. ";
var macdonald_etal92 = "Macdonald, K. C., et al., The East Pacific Rise and its flanks 8°18°N: History of segmentation, propagation and spreading direction based on SeaMARC II and Sea Beam studies, Mar. Geophys. Res., 14, 299344, 1992. ";
var malinverno93 = "Malinverno, A., Transition between a valley and a high at the axis of mid-ocean ridges, Geology, 21, 639642, 1993. ";
var mcclain_lewis82 = "McClain, K. J., and B. T. R. Lewis, Geophysical evidence for the absence of a crustal magma chamber under the northern Juan de Fuca Ridge: A contrast with ROSE results, J. Geophys. Res., 87, 84778489, 1982. ";
var mcdonald_etal94 = "McDonald, M. A., S. C. Webb, J. A. Hildebrand, B. R. Cornuelle, and C. G. Fox, Seismic structure and anisotropy of the Juan de Fuca Ridge at 45°, J. Geophys. Res., 99, 48574873, 1994. ";
var morton_etal87 = "Morton, J. L., N. H. Sleep, W. R. Normark, and D. H. Thompkins, Structure of the southern Juan de Fuca Ridge from seismic reflection records, J. Geophys. Res., 92, 11,31511,326, 1987. ";
var murton_etal94 = "Murton, B. J., et al., Direct evidence for the distribution and occurrence of hydrothermal activity between 27°N30°N on the Mid-Atlantic Ridge, Earth Planet. Sci. Lett., 125, 119128, 1994. ";
var mutter_etal95 = "Mutter, J. C., S. M. Carbotte, W. Su, L. Xu, P. Buhl, R. S. Detrick, G. M. Kent, J. A. Orcutt, and A. J. Harding, Seismic images of active magma systems beneath the East Pacific Rise between 17°05\' and 17°35\'S, Science, 268, 391395, 1995. ";
var ocean86 = "Ocean Drilling Program Leg 106 Scientific Party, Drilling the Snake Pit hydrothermal sulphide deposit on the Mid-Atlantic Ridge, lat 23°22\'N, Geology, 14, 10041007, 1986. ";
var perfit_etal94 = "Perfit, M. R., D. J. Fornari, M. C. Smith, J. F. Bender, C. H. Langmuir, and R. H. Haymon, Small-scale spatial and temporal variations in mid-ocean ridge crest magmatic processes, Geology, 22, 375379, 1994. ";
var purdy_etal92 = "Purdy, G. M., L. S. L. Kong, G. L. Christeson, and S. C. Solomon, Relationship between spreading rate and seismic structure of mid-ocean ridges, Nature, 355, 815817, 1992. ";
var reynolds_etal92 = "Reynolds, J. R., C. H. Langmuir, J. F. Bender, K. A. Kastens, and W. B. F. Ryan, Spatial and temporal variability in the geochemistry of basalts from the East Pacific Rise, Nature, 359, 493499, 1992. ";
var rhodes_etal90 = "Rhodes, J. M., C. Morgan, and R. A. Liias, Geochemistry of Axial Seamount lavas: Magmatic relationship between the Cobb hotspot and the Juan de Fuca Ridge, J. Geophys. Res., 95, 12,71312,734, 1990. ";
var rohr_etal88 = "Rohr, K. M. M., B. Milkereit, and C. J. Yorath, Asymmetric deep crustal structure across the Juan de Fuca Ridge, Geology, 16, 533537, 1988. ";
var rona78 = "Rona, P. A., Criteria for recognition of hydrothermal mineral deposits in oceanic crust, Econ. Geol., 73, 135160, 1978. ";
var rona_etal86 = "Rona, P. A., G. Klinkhammer, T. A. Nelsen, J. H. Trefry, and H. Elderfield, Black smokers, massive sulfides and vent biota at the Mid-Atlantic Ridge, Nature, 321, 3337, 1986. ";
var scheirer_macdonald93 = "Scheirer, D. S., and K. C. Macdonald, The variation in cross-sectional area of the axial ridge along the East Pacific Rise: Evidence for the magmatic budget of a fast-spreading center, J. Geophys. Res., 98, 78717885, 1993. ";
var scheirer_etal96 = "Scheirer, D. S., K. C. Macdonald, D. W. Forsyth, S. P. Miller, D. J. Wright, M.-H. Cormier, and C. M. Weiland, A map series of the southern East Pacific Rise and its flanks, 15°S to 19°S, Mar. Geophys. Res., in press, 1996. ";
var sinton_etal83 = "Sinton, J. M., D. S. Wilson, D. M. Christie, R. N. Hey, and J. R. Delaney, Petrologic consequences of rift propagation on oceanic spreading ridges, Earth Planet. Sci. Lett., 62, 193207, 1983. ";
var sinton_etal91 = "Sinton, J. M., S. M. Smaglik, J. J. Mahoney, and K. C. Macdonald, Magmatic processes at superfast mid-ocean ridges: Glass compositional variations along the East Pacific Rise, 13°23°S, J. Geophys. Res., 96, 61336155, 1991. ";
var smith_etal94 = "Smith, M. C., M. R. Perfit, and I. R. Jonasson, Petrology and geochemistry of basalts from the southern Juan de Fuca Ridge: Controls on the spatial and temporal evolution of mid-ocean ridge basalt, J. Geophys. Res., 99, 47874812, 1994. ";
var thompson_etal85 = "Thompson, G., W. B. Bryan, R. Ballard, K. Hamuro, and W. G. Melson, Axial processes along a segment of the East Pacific Rise, 10°12°N, Nature, 318, 429433, 1985. ";
var toomey_etal90 = "Toomey, D. R., G. M. Purdy, S. C. Solomon, and W. S. D. Wilcock, The three-dimensional seismic velocity structure of the East Pacific Rise near latitude 9°30\'N, Nature, 347, 639645, 1990. ";
var urabe_etal95 = "Urabe, T., et al., The effect of recent magmatic activity on hydrothermal venting along the superfast-spreading East Pacific Rise, Science, 269, 10921095, 1995. ";
var wilcock94 = "Wilcock, W. S. D., A model for the formation of megaplumes (abstract), Eos Trans. AGU, 75(44), Fall Meet. Suppl., 619, 1994. ";
var wright_etal95 = "Wright, D. J., R. M. Haymon, and D. J. Fornari, Crustal fissuring and its relationship to magmatic and hydrothermal processes on the East Pacific Rise crest (9°12\' to 54\'N), J. Geophys. Res., 100, 60976120, 1995. ";