var appelgate90 = "Appelgate, B. T., Volcanic and structural morphology of the south flank of Axial Volcano, Juan de Fuca Ridge: Results from a SeaMARC I side scan sonar survey, J. Geophys. Res., 95, 12,68912,966, 1990. ";
var appelgate_embley92 = "Appelgate, B. T., and R. W. Embley, Submarine tumuli and inflated tube-fed lava flows on Axial Volcano, Juan de Fuca Ridge, Bull. Volcanol., 54, 447458, 1992. ";
var bakerthis = "Baker, E. T., A 6-year time series of hydrothermal plumes over the Cleft segment of the Juan de Fuca Ridge, J. Geophys. Res., this issue. ";
var baker_lupton90 = "Baker, E. T., and J. E. Lupton, Changes in submarine hydrothermal 3He/heat ratios as an indicator of magmatic/tectonic activity, Nature, 346, 557558, 1990. ";
var baker_etal87 = "Baker, E. T., G. J. Massoth, and R. A. Feely, Cataclysmic venting on the Juan de Fuca Ridge, Nature, 329, 149151, 1987. ";
var baker_etal89 = "Baker, E. T., W. Lavelle, R. A. Feely, G. J. Massoth, and S. L. Walker, Episodic venting on the Juan de Fuca Ridge, J. Geophys. Res., 94, 92379250, 1989. ";
var ballard_etal79 = "Ballard, R. D., R. J. Holcomb, and T. H. van Andel, The Galapagos Rift at 86°W, 3, Sheet flows, collapse pits and lava lakes of the rift valleys, J. Geophys. Res., 84, 54075422, 1979. ";
var bjornsson_etal79 = "Bjornsson, A., G. Johnsen, S. Sigurdsson, G. Thorbergsson, and E. Trygvasson, Rifting of the plate boundary in north Iceland 19751978, J. Geophys. Res., 84, 30293038, 1979. ";
var butterfield_massoththis = "Butterfield, D. A., and G. J. Massoth, Geochemistry of north Cleft segment vent fluids: Temporal changes in chlorinity and their possible relation to recent volcanism, J. Geophys. Res., this issue. ";
var chadwick_embleythis = "Chadwick, W. W., Jr., and R. W. Embley, Lava flows from a mid-1980s submarine eruption on the Cleft segment, Juan de Fuca Ridge, J. Geophys. Res., this issue. ";
var chadwick_etal91 = "Chadwick, W. W., Jr., R. W. Embley, and C. G. Fox, Evidence for volcanic eruptions on the southern Juan de Fuca Ridge between 1981 and 1987, Nature, 350, 416418, 1991. ";
var demoustier_kleinrock86 = "de Moustier, C., and M. C. Kleinrock, Bathymetric artifacts in Sea Beam modeling of a propagating rift: Galapagos 95°30'W, J. Geophys. Res., 91, 34073424, 1986. ";
var dziak_fox93 = "Dziak, R. P., and C. G. Fox, Seismo-acoustic evidence of a dike injection along the CoAxial segment, Juan de Fuca Ridge, Eos Trans. AGU, 74, Fall Meeting suppl., 619, 1993. ";
var embley_etal83 = "Embley, R. W., S. R. Hammond, A. Malahoff, W. B. F. Ryan, K. Crane, and E. Kappel, Rifts of the southern Juan de Fuca, Eos Trans. AGU, 64, 853, 1983. ";
var embley_etal90a = "Embley, R. W., W. W. Chadwick, and C. G. Fox, New evidence for volcanic eruptions on the southern Juan de Fuca Ridge during the 1980s—Implications for megaplumes and seafloor monitoring, Eos Trans. AGU, 71, 1602, 1990a. ";
var embley_etal90b = "Embley, R. W., K. M. Murphy, and C. G. Fox, High-resolution studies of the summit of Axial Volcano, J. Geophys. Res., 95, 12,78512,812, 1990b. ";
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_etal93 = "Embley, R. W., W. W. Chadwick, Jr., I. R. Jonasson, S. Petersen, D. Butterfield, V. Tunnicliffe, and K. Juniper, Geological inferences from a response to the first remotely detected eruption at the mid-ocean ridge: CoAxial segment, Juan de Fuca Ridge, Eos Trans. AGU, 74, Fall Meeting suppl., 619, 1993. ";
var fox_etal88 = "Fox, C. G., K. Murphy, and R. W. Embley, Automated display and statistical analysis of interpreted deep-sea bottom photographs, Mar. Geol., 178, 199216, 1988. ";
var fox_etal92 = "Fox, C. G., W. W. Chadwick, Jr., and R. W. Embley, Detection of changes in ridge crest morphology using repeated multibeam sonar surveys, J. Geophys. Res., 97, 11,14911,162, 1992. ";
var fox93 = "Fox, C. G., Real-time detection of a volcanic eruption on the Juan de Fuca Ridge using the U.S. Navy Sound Surveillance System, Eos. Trans. AGU, 74, Fall Meeting. suppl., 619, 1993. ";
var francheteau_ballard83 = "Francheteau, J. T., and R. D. 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 francheteau_etal79 = "Francheteau, J. T., T. Juteau, and C. Rangan, Basaltic pillars in collapsed lava pools on the deep-ocean floor, Nature, 281, 209211, 1979. ";
var griffiths_fink92 = "Griffiths, R. W., and J. H. Fink, Solidification and morphology of submarine lavas: A dependence on extrusion rate, J. Geophys. Res., 97, 19,72919,737, 1992. ";
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 crest at 9°4552'N, I, Direct submersible observations of seafloor phenomena associated with an eruption event in April 1991, Earth Planet. Sci. Lett., 119, 7183, 1993. ";
var howard_fisk88 = "Howard, K. J., and M. R. Fisk, Hydrothermal alumina-rich clays and boehmite on the Gorda Ridge, Geochim. Cosmochim. Acta, 52, 22692279, 1988. ";
var humphris_etal90 = "Humphris, S. E., W. B. Bryan, G. Thompson, and L. Autio, Morphology, geochemistry, and evolution of Serocki Volcano, Proc. Ocean. Drill. Program, Sci. Results, 106/107, 6784, 1990. ";
var johnson_holmes89 = "Johnson, H. P., and M. Holmes, Evolution and plate tectonics: The Juan de Fuca Ridge, in The Geology of North America, vol. IV, The Eastern Pacific Ocean and Hawaii, edited by E. L. Winterer, D. M. Hussong, and R. W. Decker, pp. 7391, Geological Society of America, Boulder, Colo., 1989. ";
var kappel_normark87 = "Kappel, E. S., and W. R. Normark, Morphometric variability within the axial zone of the southern Juan de Fuca Ridge: Interpretation from SeaMARC II, SeaMARC I and deep-sea photography, J. Geophys. Res., 92, 11,29111,302, 1987. ";
var kappel_normark88 = "Kappel, E., and W. R. Normark, Results from camera tows along the southern Juan de Fuca Ridge: A284-WF, U.S. Geol. Surv. Open File Rept., 88371, 1988. ";
var kappel_ryan86 = "Kappel, E. S., and W. B. F. Ryan, Volcanic episodicity and a non-steady state rift valley along northeast Pacific spreading centers: Evidence from SeaMARC I, J. Geophys. Res., 91, 13,92513,940, 1986. ";
var koski_etalthis = "Koski, R. A., I. R. Jonasson, D. C. Kadko, V. K. Smith, and F. L. Wong, Compositions, growth mechanisms, and temporal relations of hydrothermal sulfide-sulfate-silica chimneys at the northern Cleft segment, Juan de Fuca Ridge, J. Geophys. Res., this issue. ";
var macdonald_etal84 = "Macdonald, K. C., J. C. Sempere, and P. J. Fox, East Pacific Rise from Siqueiros to Orozco fracture zones: Along-strike continuity of axial neovolcanic zone and structure and evolution of overlapping spreading centers, J. Geophys. Res., 89, 60496069, 1984. ";
var macdonald_etal88 = "Macdonald, K. C., P. J. Fox, L. J. Perram, M. F. Eissen, R. M. Haymon, S. P. Miller, S. M. Carbotte, M. H. Cormier, and A. N. Shor, A new view of the mid-ocean ridge from behavior of ridge axis discontinuities, Nature, 335, 217225, 1988. ";
var mcdonald_etalthis = "McDonald, M. A., J. A. Hildebrand, S. C. Webb, and C. Fox, Seismic structure and anisotropy of the Juan de Fuca Ridge at 45°N, J. Geophys. Res., this issue. ";
var massoth_etalthis = "Massoth, G., E. T. Baker, J. E. Lupton, R. A. Feely, D. A. Butterfield, K. L. Von Damm, K. K. Roe, and G. T. Lebon, Temporal and spatial variability of hydrothermal manganese and iron at the Cleft segment, Juan de Fuca Ridge, J. Geophys. Res., this issue. ";
var milligan_tunnicliffethis = "Milligan, B. N., and V. Tunnicliffe, Vent and nonvent faunas of Cleft segment, Juan de Fuca Ridge, and their relations to lava age, J. Geophys. Res., this issue. ";
var morton_etal87 = "Morton, J., N. H. Sleep, W. R. Normark, and D. H. Tomkins, Structure of the southern Juan de Fuca Ridge from seismic reflection records, J. Geophys. Res., 92, 11,31511,326, 1987. ";
var murphy_embley88 = "Murphy, K. M., and R. W. Embley, A morphologic and structural study of the Vance Seamount Chain: Relationship to volcanism on the Juan de Fuca Ridge, Eos Trans. AGU, 69, 1503, 1988. ";
var normark_etal83 = "Normark, W. R., J. L. Morton, R. A. Koski, and D. A. Clague, Active hydrothermal vents and sulfide deposits on the southern Juan de Fuca Ridge, Geology, 11, 158163, 1983. ";
var normark_etal87 = "Normark, W. R., J. L. Morton, and S. L. Ross, Submersible observations along the southern Juan de Fuca Ridge: 1984 Alvin Program, J. Geophys. Res., 92, 11,28311,290, 1987. ";
var renard_allenou79 = "Renard, V., and P. Allenou, SEA BEAM multi-beam echo sounding in "Jean-Charcot". Description, evaluation and first results, Int. Hydrogr. Rev., 56, 3567, 1979. ";
var rubin92 = "Rubin, A. M., Dike-induced faulting and graben subsidence in volcanic rift zones, J. Geophys. Res., 97, 18391858, 1992. ";
var rubin_pollard87 = "Rubin, A. M., and D. D. Pollard, Origins of blade-like dikes in volcanic rift zones, in Volcanism in Hawaii, edited by R. W. Decker, T. L. Wright, and P. H. Stauffer, U.S. Geol. Surv. Prof. Pap., 1350, 14491470, 1987. ";
var sigurdsson87 = "Sigurdsson, H., Dyke injection in Iceland: a review, in Mafic Dyke Swarms, edited by H. C. Halls and W. F. Fahrig, Geol. Assoc. Can. Spec. Pap., 34, 5564, 1987. ";
var smith_etalthis = "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., this issue. ";
var staudigel_etal92 = "Staudigel, H., J. Gee, L. Tauxe, and R. J. Varga, Shallow intrusive directions in the Troodos ophiolite: Anisotropy of magnetic susceptibility and structural data, Geology, 20, 841844, 1992. ";
var stevenson_etalthis = "Stevenson, J. M., J. A. Hildebrand, M. A. Zumberge, and C. Fox, An ocean bottom gravity study of the southern Juan de Fuca Ridge, J. Geophys. Res., this issue. ";
var USGS86 = "U.S. Geological Survey (USGS), Juan de Fuca Study Group, Submarine fissure eruptions and hydrothermal vents on the southern Juan de Fuca Ridge: Preliminary observations from the submersible Alvin, Geology, 14, 823827, 1986. ";
var walker91 = "Walker, G. P. L., Structure, and origin by injection, of lava under surface crust, of tumuli, "lava rises," lava-rise pits," and "lava-inflation clefts" in Hawaii, Bull. Volcanol., 53, 546558, 1991. ";
var waters60 = "Waters, A. C., Determining direction of flow in basalts, Am. J. Sci., 258-A, 350366, 1960. ";
var wilson_head88 = "Wilson, L., and J. W. Head, III, Nature of local magma storage zones and geometry of conduit systems below basaltic eruption sites: Pu'u 'O'o, Kilauea East Rift, Hawaii, example, J. Geophys. Res., 93, 14,78514,792, 1988. ";