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Contents, volume 26, 1985
391 CONTENTS, Volume 26, 1985
Research Papers Double-diffusive convection in partially molten silicate systems: its role during magma production and in magma chambers R.P. Lowell (Atlanta, Ga., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Isotopic composition of acid sulfate~chloride waters and volcanic steam from some volcanoes in northeastern Japan Y. Kiyosu (Nagoya, Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 A reconnaissance of the major Holocene tephra deposits in the upper Cook Inlet region, Alaska J.R. Riehle (Anchorage, Alaska, U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 The Neogene Alert Bay Volcanic Belt of northern Vancouver Island, Canada: descending-plate-edge volcanism in the arc--trench gap R.L. Armstrong, J.E. Muller and J.E. Harakal (Vancouver, B.C., Canada), and K. Muehlenbachs (Edmonton, Alta., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . 75 The potassic series of Karisimbi volcano (Virunga range, Rwada): volcanological and petrological aspects G. Marcelot (Brest, France), J. Ph. Ran~on and J. Demange (Orleans, France) . . . . 99 Interaction of a rheomorphic peralkaline ash-flow tuff and underlying deposits, Menengai volcano, Kenya P.T. Leat (Lancaster, Great Britain) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 Geochemistry of volcanic rocks from Mt. Pel~e, Martinique C. Dupuy (Montpellier, France), J. Dostal (Halifax, N.S., Canada) and H. Traineau (Orleans, France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Short Note Trapping temperatures of melt inclusions from ejected Vesuvian mafic xenoliths M. Cortini and A. Lima (Naples, Italy), and B. De Vivo (Rome, Italy) . . . . . . . . .
167
Letter Section The Galapagos volcano Alcedo : a unique ocean caldera A.R. McBirney, A.B. Cullen, D. Geist and E.P. Vicenzi (Eugene, Oreg., U.S.A.), R.A. Duncan (Corvallis, Oreg., U.S.A.), M.L. Hall and M. Estrella (Quito, Ecuador) 173 Book Review Pyroclastic Rocks, by R.V. Fisher and H.-U. Schmincke -- A.R. McBirney . . . . . . . . Research Papers A volcanic tremor monitoring system A.W. Hurst (Wellington, New Zealand) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The effect of explosive eruption processes on geochemical patterns within pyroclastic deposits J.A. Wolff (Arlington, Tex., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Geology of Santa Fe Island: the oldest Galapagos volcano D.J. Geist, A.R. McBirney (Eugene, Oreg., U.S.A.) and R.A. Duncan (Corvallis, Oreg., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vp/Vs ratios in the Yellowstone National Park region, Wyoming S.N. Chatterjee (Pune, India), A.M. Pitt and H.M. Iyer (Menlo Park, Calif., U.S.A.) Chloride flux out of Yellowstone National Park D.R. Norton and I. Friedman (Denver, Colo., U.S.A.) . . . . . . . . . . . . . . . . . . . .
179
181
189
203 213 231
392 The petrology and geochemistry of the Handkerchief Mesa mixed magma complex, San Juan Mountains, Colorado R.A. Thompson (Denver, Colo., U.S.A.) and M.A. Dungan (Dallas, Tex., U.S.A.).. Geochemistry and geothermometry of spring water from the Blackfoot Reservoir region, southeastern Idaho A. Hutsinpiller (Reno, Nev., U.S.A.) and W.T. Parry {Salt Lake City, Utah, U.S.A.) Hydrothermal history o f Piton des Neiges volcano (Reunion Island, Indian Ocean) J.Ph. Ranqon (Orleans, France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Temporal variation in chemical composition o f phenocrysts and magmatic temperature at Daisen volcano, southwest Japan M. Tsukui (Tokyo, Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Evolution of the Latera geothermal system II: metamorphic, hydrothermal mineral assemblages and fluid chemistry G. Cavarretta (Rome, Italy), G. Gianelli, G. Scandiffio (Pisa, Italy) and F. Tecce (Rome, Italy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
251
275 297
317
337
Discussions On the reliability of the ~3°Th-~3sU dating method applied to young volcanic rocks -- Discussion C. Hemond (Paris, France) and M. Condomines (Clermont-Ferrand, France) . . . . . On the reliability of the 230Th.238U dating method applied to young volcanic rocks -Reply G. Capaldi, M. Cortini and R. Pece (Naples, Italy) . . . . . . . . . . . . . . . . . . . . . . The Valle del Bore, Mount Etna : its origin and relation to the stratigraphy and structure o f the volcano -- Discussion W.J. McGuire (Isleworth, England) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The Valle del Bore, Mount Etna: its origin and relation to the stratigraphy and structure of the volcano -- Reply J.E. Guest (London, England), D.K. Chester (Liverpool, England) and A.M. Duncan (Luton, England) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
384
Book Review Geochemical Exploration 1982, edited by G.R. Parslow -- R.A. Cadigan . . . . . . . .
387
Erratum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
389
365
369
377
Research Papers Double-diffusive convection in partially molten silicate systems: its role during magma production and in magma chambers R.P. Lowell (Atlanta, Ga., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Isotopic composition of acid sulfate~chloride waters and volcanic steam from some volcanoes in northeastern Japan Y. Kiyosu (Nagoya, Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 A reconnaissance of the major Holocene tephra deposits in the upper Cook Inlet region, Alaska J.R. Riehle (Anchorage, Alaska, U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 The Neogene Alert Bay Volcanic Belt of northern Vancouver Island, Canada: descending-plate-edge volcanism in the arc--trench gap R.L. Armstrong, J.E. Muller and J.E. Harakal (Vancouver, B.C., Canada), and K. Muehlenbachs (Edmonton, Alta., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . 75 The potassic series of Karisimbi volcano (Virunga range, Rwada): volcanological and petrological aspects G. Marcelot (Brest, France), J. Ph. Ran~on and J. Demange (Orleans, France) . . . . 99 Interaction of a rheomorphic peralkaline ash-flow tuff and underlying deposits, Menengai volcano, Kenya P.T. Leat (Lancaster, Great Britain) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 Geochemistry of volcanic rocks from Mt. Pel~e, Martinique C. Dupuy (Montpellier, France), J. Dostal (Halifax, N.S., Canada) and H. Traineau (Orleans, France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Short Note Trapping temperatures of melt inclusions from ejected Vesuvian mafic xenoliths M. Cortini and A. Lima (Naples, Italy), and B. De Vivo (Rome, Italy) . . . . . . . . .
167
Letter Section The Galapagos volcano Alcedo : a unique ocean caldera A.R. McBirney, A.B. Cullen, D. Geist and E.P. Vicenzi (Eugene, Oreg., U.S.A.), R.A. Duncan (Corvallis, Oreg., U.S.A.), M.L. Hall and M. Estrella (Quito, Ecuador) 173 Book Review Pyroclastic Rocks, by R.V. Fisher and H.-U. Schmincke -- A.R. McBirney . . . . . . . . Research Papers A volcanic tremor monitoring system A.W. Hurst (Wellington, New Zealand) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The effect of explosive eruption processes on geochemical patterns within pyroclastic deposits J.A. Wolff (Arlington, Tex., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Geology of Santa Fe Island: the oldest Galapagos volcano D.J. Geist, A.R. McBirney (Eugene, Oreg., U.S.A.) and R.A. Duncan (Corvallis, Oreg., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vp/Vs ratios in the Yellowstone National Park region, Wyoming S.N. Chatterjee (Pune, India), A.M. Pitt and H.M. Iyer (Menlo Park, Calif., U.S.A.) Chloride flux out of Yellowstone National Park D.R. Norton and I. Friedman (Denver, Colo., U.S.A.) . . . . . . . . . . . . . . . . . . . .
179
181
189
203 213 231
392 The petrology and geochemistry of the Handkerchief Mesa mixed magma complex, San Juan Mountains, Colorado R.A. Thompson (Denver, Colo., U.S.A.) and M.A. Dungan (Dallas, Tex., U.S.A.).. Geochemistry and geothermometry of spring water from the Blackfoot Reservoir region, southeastern Idaho A. Hutsinpiller (Reno, Nev., U.S.A.) and W.T. Parry {Salt Lake City, Utah, U.S.A.) Hydrothermal history o f Piton des Neiges volcano (Reunion Island, Indian Ocean) J.Ph. Ranqon (Orleans, France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Temporal variation in chemical composition o f phenocrysts and magmatic temperature at Daisen volcano, southwest Japan M. Tsukui (Tokyo, Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Evolution of the Latera geothermal system II: metamorphic, hydrothermal mineral assemblages and fluid chemistry G. Cavarretta (Rome, Italy), G. Gianelli, G. Scandiffio (Pisa, Italy) and F. Tecce (Rome, Italy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
251
275 297
317
337
Discussions On the reliability of the ~3°Th-~3sU dating method applied to young volcanic rocks -- Discussion C. Hemond (Paris, France) and M. Condomines (Clermont-Ferrand, France) . . . . . On the reliability of the 230Th.238U dating method applied to young volcanic rocks -Reply G. Capaldi, M. Cortini and R. Pece (Naples, Italy) . . . . . . . . . . . . . . . . . . . . . . The Valle del Bore, Mount Etna : its origin and relation to the stratigraphy and structure o f the volcano -- Discussion W.J. McGuire (Isleworth, England) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The Valle del Bore, Mount Etna: its origin and relation to the stratigraphy and structure of the volcano -- Reply J.E. Guest (London, England), D.K. Chester (Liverpool, England) and A.M. Duncan (Luton, England) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
384
Book Review Geochemical Exploration 1982, edited by G.R. Parslow -- R.A. Cadigan . . . . . . . .
387
Erratum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
389
365
369
377