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  5.     <title>UTas ePrints - Peperite: a review of magma-sediment mingling</title>
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  13.     <meta content="Skilling, I.P." name="eprints.creators_name" />
  14. <meta content="White, J.D.L." name="eprints.creators_name" />
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  23. <meta content="Peperite: a review of magma-sediment mingling" name="eprints.title" />
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  27. <meta content="peperite; review; hydromagmatism; magma-water interaction; magma-sediment mingling" name="eprints.keywords" />
  28. <meta content="The study of peperite is important for understanding magma-water interaction and explosive hydrovolcanic hazards. This paper reviews the processes and products of peperite genesis. Peperite is common in arc-related and other volcano-sedimentary sequences, where it can be voluminous and dispersed widely from the parent intrusions. It also occurs in phreatomagmatic vent-filling deposits and along contacts between sediment and intrusions, lavas and hot volcaniclastic deposits in many environments. Peperite can often be described on the basis of juvenile clast morphology as blocky or fluidal, but other shapes occur and mixtures of different clast shapes are also found. Magma is dominantly fragmented by quenching, hydromagmatic explosions, magma-sediment density contrasts, and mechanical stress as a consequence of inflation or movement of magma or lava. Magma fragmentation by fluid-fluid shearing and surface tension effects is probably also important in fluidal peperite. Fluidisation of host sediment, hydromagmatic explosions, forceful intrusion of magma and sediment liquefaction and shear liquification are probably the most important mechanisms by which juvenile clasts and host sediment are mingled and dispersed. Factors which could influence fragmentation and mingling processes include magma, host sediment and peperite rheologies, magma injection velocity, volatile content of magma, total volumes of magma and sediment involved, total volume of pore-water heated, presence or absence of shock waves, confining pressure and the nature of local and regional stress fields. Sediment rheology may be affected by dewatering, compaction, cementation, vesiculation, fracturing, fragmentation, fluidisation, liquefaction, shear liquification and melting during magma intrusion and peperite formation. The presence of peperite intraclasts within peperite and single juvenile clasts with both sub-planar and fluidal margins imply that peperite formation can be a multi-stage process that varies both spatially and temporally. Mingling of juvenile clast populations, formed under different thermal and mechanical conditions, complicates the interpretation of magma fragmentation and mingling mechanisms. " name="eprints.abstract" />
  29. <meta content="2002-05" name="eprints.date" />
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  40. <meta content="Allen, R.L., 1992. Reconstruction of the tectonic, volcanic and sedimentary setting of strongly deformed Zn-Cu massive
  41. sulfide deposits at Benambra, Victoria, Australia. Econ.
  42. Geol. 87, 825-854.
  43. Allen, S.R., Cas, R.A.F., 1998. Mixing of ignimbrite and unconsolidated mud during emplacement of the Kos Plateau
  44. Tuff. IAVCEI Int. Volcanol. Congress, Cape Town, Abstracts,
  45. p. 2.
  46. Assorgia, A., Gimeno, D., 1994. Coeval genesis of pillow lava on the sea floor and under a thin cover of unlithified sediments(and associated formation of peperites). Geol. Mijnbouw 72, 363-373.
  47. Boulter, C.A., 1993. High-level peperiticsills at Rio Tinto,
  48. Spain: implications for stratigraphy and mineralization.
  49. Trans. Inst. Min. Metall. 102, B30-B38.
  50. Branney, M., 1986. Isolated pods of subaqueous welded ash-
  51. flow tuff: a distal facies of the Capel Curig Volcanic Formation (Ordovician), North Wales. Geol. Mag. 123, 589-590.
  52. Branney, M., Suthren, R., 1988. High-level peperiticsills in the English Lake District: distinction from block lavas, and implications for Borrowdale Volcanic Group stratigraphy.
  53. Geol. J. 23, 171-187.
  54. Bromley, A.V., 1965. Intrusive quartz latites in the Blaenau
  55. Ffestiniog area. Merioneth. Geol. J. 23, 171-187.
  56. Brooks, E.R., Wood, M.M., Garbutt, P., L, 1982. Origin and
  57. metamorphism of peperite and associated rocks in the Devonian Elwell Formation, northern Sierra Nevada, California.Geol. Soc. Am. Bull. 93, 1208-1231.
  58. Brooks, E.R., 1995. Palaeozoic fluidization, folding and peperite formation, northern Sierra Nevada, California. Can.
  59. J. Earth. Sci. 32, 314-324.
  60. Busby, C.J., 1998. Prevalence of peperitic sills of lava flows in marine arc-rift settings. IAVCEI Int. Volcanol. Congress, Cape Town, Abstracts, p. 10.
  61. Busby-Spera, C.J., White, J.D.L., 1987. Variation in peperite textures associated with differing host-sediment properties.Bull. Volcanol. 49, 765-775.
  62. Cas, R.A.F., Edgar, C., Scutter, C., 1998. Peperites of the Late Devonian Bunga Beds, southeastern Australia: a record of syn-depositional high-level intrusion, dome emergence and
  63. resedimentation. IAVCEI Int. Volcanol. Congress, Cape
  64. Town, Abstracts, p. 11.
  65. Cas, R.A.F., Edgar, C., Allen, R.L., Bull, S., Clifford, B.A., Giordano, G., Wright, J.V., 2001. Influence of magmatism and tectonics on sedimentation in an extensional lake basin: the Upper Devonian Bunga Beds, Boyd Volcanic Complex, southeastern Australia. In: White, J.D.L., Riggs, N.R.(Eds.), Volcaniclastic Sedimentation in Lacustrine Settings, Int. Assoc. Sediment. Spec. Publ. 30, 83-108.
  66. Coira, B., Perez, B., 2002. Peperitictextures of Ordovician
  67. dacitic synsedimentary intrusions in Argentinas Puna Highland: clues to emplacement conditions. In: Skilling, I.P., White, J.D.L., McPhie, J. (Eds.), Peperite: Processes and Products of Magma^Sediment Mingling. J. Volcanol. Geotherm. Res. 114, 165-180.
  68. Corsaro, R.A., Mazzoleni, P., 2002. Textural evidence of peperites inside pillow lavas at Acicastello Castle Rock (Mt.Etna, Sicily). In: Skilling, I.P., White, J.D.L. and McPhie, J. (Eds.), Peperite: Processes and Products of Magma-Sediment Mingling. J. Volcanol. Geotherm. Res. 114, 219-229.
  69. Dadd, K.A., Van Wagoner, N.A., 2002. Magma composition
  70. and viscosity as controls on peperite texture: an example
  71. from Passamaquoddy Bay, southeastern Canada. In: Skilling,
  72. I.P., White, J.D.L., McPhie, J. (Eds.), Peperite: Processes
  73. and Products of Magma-Sediment Mingling. J. Volcanol.
  74. Geotherm. Res. 114, 63-80.
  75. Davidson, J.F., Clift, R., Harrison, D. (Eds.), 1985. Fluidization. Academic Press, London, 733 pp.
  76. De Goer, A., Vincent, P., Camus, G., 1998. Must we still use
  77. the term peperite? A review of the type peperites of Scrope,
  78. in Limagne, France. IAVCEI Int. Volcanol. Congress, Cape
  79. Town, Abstracts, p. 16.
  80. De Goer, A., 2000. Peperites from the Limagne trench (Auvergne, French Massif Central): a distinctive facies of phreatomagmatic pyroclastics. History of a semantic drift. In: Leyrit, H., Montenat, C. (Eds.), Volcaniclastic Rocks
  81. From Magmas to Sediments. Gordon and Breach Science
  82. Publishers, Amsterdam, 91-110.
  83. Delaney, P.T., 1982. Rapid intrusion of magma into wet rock:
  84. groundwater flow due to pore pressure increases. J. Geophys.
  85. Res. 87, 7739-7756.
  86. Dewit, M.J., Stern, C., 1978. Pillow talk. J. Volcanol. Geotherm. Res. 4, 55-80.
  87. Donaire, T., Saez, R., Pascual, E., 2002. Rhyolitic globular
  88. peperites from the Aznalcollar mining district (Iberian Pyrite belt, Spain): physical and chemical controls. In: Skilling, I.P., White, J.D.L. and McPhie, J. (Eds.), Peperite: Processes and Products of Magma-Sediment Mingling. J. Volcanol. Geotherm. Res. 114, 119-128.
  89. Doyle, M.G., 2000. Clast shape and textural associations in
  90. peperite as a guide to hydromagmaticinterac tions: Upper
  91. Permian basalticand basaltic andesite examples from Kiama,
  92. Australia. Aust. J. Earth Sci. 47, 167-177.
  93. Duffield, W.A., Bacon, C.R., Delaney, P.T., 1986. Deformation of poorly consolidated sediment during regional shallow emplacement of a basalt sill, Coso Range, California.Bull. Volcanol. 48, 97-106.
  94. Einsele, G., 1986. Interaction between sediments and basaltic injections in young Gulf of California-type spreading centers. Geol. Rundschau 75, 197-208.
  95. Gifkins, C.C., McPhie, J., Allen, R.L., 2002. Pumiceous peperite in ancient submarine volcanic successions. In: Skilling, I.P., White, J.D.L., McPhie, J. (Eds.), Peperite: processes and products of magma^sediment mingling. J. Volcanol. Geotherm. Res. 114, 181-203.
  96. Godchaux, M., Bonnichsen, B., Jenks, M.D., 1992. Types of
  97. phreatomagmaticvolc anoes in the western Snake River
  98. Plain, Idaho, USA. J. Volcanol. Geotherm. Res. 52, 1-25.
  99. Goto, Y., 1997. Interlayered sill-sediment structure at the base of a Miocene basaltic andesite sheet intrusion, Rebun Island, Hokkaido, Japan. J. Mineral. Petrol. Econ. Geol. 92, 509-520.
  100. Goto, Y., McPhie, J., 1996. A Miocene basanite peperitic dyke at Stanley, northwestern Tasmania, Australia. J. Volcanol. Geotherm. Res. 74, 111-120.
  101. Goto, Y., McPhie, J., 1998. Endogenous growth of a Miocene
  102. submarine dacite cryptodome, Rebun Island, Hokkaido, Japan.
  103. J. Volcanol. Geotherm. Res. 84, 273-286.
  104. Hanson, R.E., Schweickert, R.A., 1982. Chilling and brecciation of a Devonian rhyoliticsill intruded into wet sediments, northern Sierra Nevada, California. J. Geol. 90, 717-724.
  105. Hanson, R.E., 1991. Quenching and hydroclastic disruption of
  106. andesiticto rhyoliticintrusions in a submarine island-arc
  107. sequence, northern Sierra Nevada, California. Geol. Soc.
  108. Am. Bull. 103, 804-816.
  109. Hanson, R.E., Hargrove, U.S., 1999. Processes of magma/wet
  110. sediment interaction in a large-scale Jurassic andesitic peperite complex, northern Sierra Nevada, California.. Bull. Volcanol. 60, 610-626.
  111. Hanson, R.E., Wilson, T.J., 1993. Large-scale rhyolitic peperites (Jurassic, southern Chile). J. Volcanol. Geotherm. Res. 54, 247-264.
  112. Hooten, J.A., Ort, M.H., 2002. Peperite as a record of early
  113. stage phreatomagmaticfragmentati on processes: an example
  114. from the Hopi Buttes volcanic field, Navajo Nation, Arizona,
  115. USA. In: Skilling, I.P., White, J.D.L., McPhie, J. (Eds.),
  116. Peperite: Processes and Products of Magma-Sediment Mingling.
  117. J. Volcanol. Geotherm. Res. 114, 95-106.
  118. Hunns, S.R., McPhie, J., 1999. Pumiceous peperite in a submarine volcanic succession at Mount Chalmers, Queensland,
  119. Australia. J. Volcanol. Geotherm. Res. 88, 239-254.
  120. Ito, T., Matsumoto, R., Kano, K., Sakuyama, M., 1984. Welding of acidic tuff and altered rhyolite fragments caused by the intrusion of magma: examples in the Neogene Shirahama Group in the southern part of the Izu Peninsula, central Japan. J. Geol. Soc. Jpn. 90, 763-774.
  121. Jerram, D., Stollhofen, H., 2002. Lava/sediment interaction in desert settings: are all peperite-like textures the result of magma-water interaction? In: Skilling, I.P., White, J.D.L., McPhie, J. (Eds.), Peperite: Processes and Products of Magma-Sediment Mingling. J. Volcanol. Geotherm. Res. 114, 231-249.
  122. Jones, J.G., 1969. A lacustrine volcano of Central France and the nature of peperites. Proc. Geol. Assoc. 80, 177-188.
  123. Kano, K., 1989. Interactions between andesitic magma and
  124. poorly consolidated sediments : examples in the Neogene
  125. Shirahama Group, south Izu, Japan. J. Volcanol. Geotherm.
  126. Res. 37, 59-75.
  127. Kano, K., 1991. Miocene pillowed sills in the Shimane Peninsula,SW Japan. J. Volcanol. Geotherm. Res. 48, 359-366.
  128. Kano, K., 1998. Explosion of volcaniclastic sediments by andesite dike intrusion. IAVCEI Int. Volcanol. Congress, Cape Town, Abstracts, p. 29.
  129. Kano, K., 2002. Middle Miocene volcaniclastic dikes at Kukedo, Shimane Peninsula, SW Japan: fluidization of volcaniclastic beds by emplacement of synvolcanic andesitic dikes. In: Skilling, I.P., White, J.D.L., McPhie, J. (Eds.), Peperite: Processes and Products of Magma-Sediment Mingling. J. Volcanol. Geotherm. Res. 114, 81-94.
  130. Kieffer, G., 1970. Le volcan peperitique dHubel (Lembron,
  131. Puy-de-Dome). Rev. Sci. Nat. Auvergne 36, 3-23.
  132. Klein, G.D., 1985. The control of depositional depth, tectonic uplift and volcanism on sedimentation processes in the backarc basins of the western Pacific Ocean. J. Geol. 93, 1-25.
  133. Kokelaar, B.P., 1982. Fluidization of wet sediments during the emplacement and cooling of various igneous bodies. J. Geol. Soc. London 139, 21-33.
  134. Kokelaar, B.P., 1983. The mechanism of Surtseyan volcanism.
  135. J. Geol. Soc. London 140, 939-944.
  136. Kokelaar, B.P., 1986. Magma water interactions in subaqueous
  137. and emergent basaltic volcanism. Bull. Volc. 48, 275-289.
  138. Kokelaar, B.P., Bevins, R.E., Roach, R.A., 1985. Submarine
  139. silicic volcanism and associated sedimentary and tectonic
  140. processes, Ramsey Island, SW Wales. J. Geol. Soc. London
  141. 142, 591-613.
  142. Korsch, R.J., 1984. The structure of Shapeless Mountain, Antarctica, and its relation to Jurassic igneous activity. N. Z. J.Geol. Geophys. 27, 487-504.
  143. Krynauw, J.R., Hunter, D.R., Wilson, A.H., 1988. Emplacement
  144. of sills into wet sediments at Grunehogna, western
  145. Dronning Maud Land, Antarctica. J. Geol. Soc. Lond.
  146. 145, 1019-1032.
  147. Lacroix, A., Blondel, F., 1927. Sur lexistence dans le sud de lAnnam dune peperite resultant de lintrusion dune basalte
  148. dans un sediment a' diatomees. C. R. Acad. Sci. Paris 184,
  149. 1145-1148.
  150. Leat, P.T., 1985. Interaction of a rheomorphic peralkaline ash-flow tuff and underlying deposits, Menengai Volcano, Kenya. J. Volcanol. Geotherm. Res. 26, 131-145.
  151. Leat, P.T., Thompson, R.N., 1988. Miocene hydrovolcanism
  152. in NW Colorado, USA, fuelled by explosive mixing of basic
  153. magma and wet unconsolidated sediment. Bull. Volcanol.
  154. 50, 229-243.
  155. Lorenz, B.E., 1984. Mud-magma interactions in the Dunnage
  156. Melange, Newfoundland. In: Kokelaar, B.P., Howells, M.
  157. (Eds.), Volcanic and Associated Sedimentary and Tectonic
  158. Processes in Modern and Ancient Marginal Basins, Geol.
  159. Soc. London. Spec. Publ. 16, pp. 271-277.
  160. Lorenz, V., Buttner, R., 2002. On the formation of deep-seated subterranean peperite-like magma-sediments mixtures. In: Skilling, I.P., White, J.D.L. McPhie, J. (Eds.), Peperite: processes and products of magma-sediment mingling. J. Volcanol. Geotherm. Res. 114, 107-118.
  161. Macdonald, G.A., 1939. An intrusive peperite at San Pedro
  162. Hill, California. Calif. Univ. Publ. Dept. Geol. Sci. Bull. 24, 329-338.
  163. Martin, U., White, J.D.L., 2002. Melting and mingling of
  164. phonoliticpumic e deposits with intruding dykes: an example
  165. from the Otago Peninsula, New Zealand. In: Skilling,
  166. I.P., White, J.D.L., McPhie, J. (Eds.), Peperite: Processes
  167. and Products of Magma-Sediment Mingling. J. Volcanol.
  168. Geotherm. Res. 114, 129-146.
  169. McBirney, A.R., 1963. Factors governing the nature of submarine volcanism. Bull. Volcanol. 26, 455-469.
  170. McClintock, M.K., White, J.D.L., 2002. Granulation of weak
  171. rock as a precursor to peperite formation: Coal peperite,
  172. Coombs Hills, Antarctica. In: Skilling, I.P., White, J.D.L.,
  173. McPhie, J. (Eds.), Peperite: Processes and Products of Magma-Sediment Mingling. J. Volcanol. Geotherm. Res. 114,
  174. 205-217.
  175. McPhie, J., 1993. The Tennant Creek Porphyry revisited: a
  176. synsedimentary sill with peperite margins, Early Proterozoic, Northern Territory. Aust. J. Earth Sci. 40, 545-558.
  177. McPhie, J., Doyle, M., Allen, R., 1993. Volcanic Textures.
  178. Centre for Ore Deposit and Exploration Studies, Univ. Tasmania, Hobart, pp. 57-58.
  179. McPhie, J., Hunns, S.R., 1995. Secondary welding of submarine, pumice-lithic breccia at Mount Chalmers, Queensland, Australia. Bull. Volcanol. 57, 170-178.
  180. McPhie, J., Orth, K., 1999. Peperite, pumice and perlite in
  181. submarine volcanic successions: implications for VHMS
  182. mineralisation. Proceedings of Pacrim 99, Bali, Indonesia,
  183. pp. 643-648.
  184. Michel-Levy, A., 1890. Situation stratigraphique de regions
  185. volcaniques de lAuvergne. La Chaine des Puys. Le Mont
  186. Dore et ses glentours. Bull. Soc. Geol. Fr. 18, 688-814.
  187. Moore, C.L., 1998. Peperite formation within deep-marine
  188. mafic volcanic successions : Hokkaido, Japan. IAVCEI Int.
  189. Volcanol. Congress, Cape Town, Abstracts, p. 42.
  190. Morrissey, M., Zimanowski, B., Wohletz, K., Buetnner, R.,
  191. 1999. Phreatomagmaticfragmen tation. In: Sigurdsson, H.,
  192. Houghton, B., Rymer, H., Stix, J. (Eds.), Encyclopedia of
  193. Volcanoes, Academic Press, San Diego, pp. 431-446.
  194. Mueller, W.U., Garde, A.A., Stendal, H., 2000. Shallow-water, eruption-fed ma¢cpyroc lasticdeposits along a Paleoproterozoic coastline: Kangerluluk volcano-sedimentary sequence, southeast Greenland. Precamb. Res. 101, 163-192.
  195. Nichols, R.J., 1985. The liquifaction and remobilization of
  196. sandy sediments. In: Hartley, A.H., Prosser, D.J., (Eds.),
  197. Characterization of deep marine clastic systems. Geol. Soc.
  198. London Spec. Publ. 94, 63-76.
  199. Rawlings, D.J., 1993. Mafic peperite from the Gold Creek
  200. Volcanics in the Middle Proterozoic McArthur Basin,
  201. Northern Territory. Aust. J. Earth Sci. 40, 109-113.
  202. Rawlings, D.J., Watkeys, M.K., Sweeney, R.J., 1999. Peperitic upper margin of an invasive £ow, Karoo flood basalt province,northern Lebombo. S. Afr. J. Geol. 102, 377-383.
  203. Riggs, N., Busby-Spera, C., 1990. Evolution of a multi-vent
  204. volcanic complex within a subsiding arc graben depression:
  205. Mount Wrightson Formation, Arizona. Geol. Soc. Am.
  206. Bull. 102, 1114-1135.
  207. Sakamoto, I., 1998. Morphological features and petrographical changes between hyaloclastite to peperite of Membo rhyolite lava, observed around Senryoike inlet, Kozu-shima Is., Japan. IAVCEI Int. Volcanol. Congress, Cape Town,
  208. Abstracts, p. 51.
  209. Sanders, I.S., Johnston, J.D., 1989. The Torridonian Stac
  210. Fada Member: an extrusion of fluidised peperite? Trans.
  211. R. Soc. Edinburgh Earth Sci. 80, 1-4.
  212. Schmincke, H.U., 1967. Fused tuff and peperites in south-central Washington. Geol. Soc. Am. Bull. 78, 319-330.
  213. Scrope, G.P., 1827. Memoir on the Geology of Central
  214. France; Including the Volcanic Formations of Auvergne,
  215. the Velay and the Vivarais. Longman, Rees, Orme, Brown
  216. and Green, London, pp. 79.
  217. Scrope, G.P., 1858. The Geology and Extinct Volcanoes of
  218. Central France. John Murray, London, pp. 258.
  219. Skilling, I.P., 1998. Mechanisms of Globular Peperite Formation at Welgesien, Eastern Cape Province, South Africa.
  220. IAVCEI Int. Volcanol. Congress, Cape Town, Abstracts,
  221. p.56.
  222. Smedes, H.W., 1956. Peperites as contact phenomena of sills in the Elkhorn Mountains, Montana. Geol. Soc. Am. Bull. 67,
  223. 1783.
  224. Snyder, G.L., Fraser, G.D., 1963. Pillow lavas I: Intrusive
  225. layered lava pods and pillowed lavas, Unalaska Island, Alaska. U.S. Geol. Surv. Prof. Paper 454-B, 1-23.
  226. Squire, R.J., McPhie, J., 2002. Characteristics and origin of peperite involving coarse-grained host sediment. In: Skilling, I.P., White, J.D.L., McPhie, J. (Eds.), Peperite: Processes and Products of Magma-Sediment Mingling. J. Volcanol. Geotherm. Res. 114, 45-61.
  227. Vazquez, J.A., Riggs, N.R., 1998. Origins of lava/wet sediment mixtures: implications for volcanic vent processes. IAVCEI Int. Volcanol. Congress, Cape Town, Abstracts, p. 65.
  228. Vincent, P.M., 1974. Presence de Tufs Stratifies aux Environs de Clermont-Ferrand. 2e'me Reunion Ann. Sci. Terre, Ponta'-Mousson, Soc. Geol. France, Paris, 287.
  229. Walker, B.H., Francis, E.H., 1986. High-level emplacement of
  230. an olivine-dolerite sill into Namurian sediments near Cardenden, Fife. Trans. R. Soc. Edinburgh Earth Sci. 77, 295-307.
  231. White, J.D.L., 1990. Depositional architecture of a maar-pitted playa, Hopi Buttes volcanic field, northeastern Arizona,U.S.A.. Sed. Geol. 67, 55-84.
  232. White, J.D.L., 1991. Maar-diatreme phreatomagmatism at
  233. Hopi Buttes, Navajo Nation (Arizona), USA. Bull. Volcanol.
  234. 53, 239-258.
  235. White, J.D.L., 1996. Impure coolants and interaction dynamics of phreatomagmaticeruptions . J. Volcanol. Geotherm. Res. 74, 155-170.
  236. White, J.D.L., Busby-Spera, C., 1987. Deep marine arcapron
  237. deposits and syndepositional magmatism in the Alisitos
  238. Group at Punta Cono, Baja California, Mexico. Sedimentology
  239. 34, 911-927.
  240. White, J.D.L., McPhie, J., Skilling, I.P., 2000. Peperite: a useful geneticterm. Bull. Volcanol. 62, 65-66.
  241. Williams, H., 1929. Geology of the Marysville Buttes, California. Univ. Calif. Publ. Geol. Sci. 18, 103-120.
  242. Williams, H., Curtis, G.H., 1977. The Sutter Buttes of California: A Study of Plio-Pleistocene Volcanism. Univ. Calif. Publ. Geol. Sci. 116, 56 pp.
  243. Wilshire, H.G., Hobbs, B.E., 1962. Structure, sedimentary inclusions, and hydrothermal alteration of a latite intrusion. J. Geol. 70, 328-341.
  244. Wohletz, K.H., 1983. Mechanisms of hydrovolcanic pyroclast
  245. formation: grain size, scanning electron microscopy and
  246. experimental results. J. Volcanol. Geotherm. Res. 17, 31-63.
  247. Wohletz, K.H., 2002. Water/magma interaction: some theory
  248. and experiments on peperite formation. In: Skilling, I.P.,
  249. White, J.D.L. McPhie, J. (Eds.), Peperite: Processes and
  250. Products of Magma-Sediment Mingling. J. Volcanol. Geotherm.
  251. Res. 114, 19-35.
  252. WoldeGabriel, G., Keating, G.N., Valentine, G., 1999. Effects of shallow basalticintrusi on into pyroclastic deposits,Grants Ridge, New Mexico, USA. J. Volcanol. Geotherm.Res. 92, 389-411.
  253. Yamamoto, T., Soya, T., Suto, S., Uto, K., Takada, A., Sakaguchi,K., Ono, K., 1991. The 1989 submarine eruption of
  254. eastern Izu Peninsula, Japan: ejecta and eruption mechanisms.Bull. Volcanol. 53, 301-308.
  255. Zimanowski, B., Buttner, R., Lorenz, V., 1997. Premixing of
  256. magma and water in MFCI experiments. Bull. Volcanol. 58,
  257. 491-495.
  258. Zimanowski, B., Buttner, R., 2002. Dynamicmingling of
  259. magma and liquefied sediments. In: Skilling, I.P., White,
  260. J.D.L., McPhie, J. (Eds.), Peperite: Processes and Products
  261. of Magma-Sediment Mingling. J. Volcanol. Geotherm.
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  385.     <h1 class="ep_tm_pagetitle">Peperite: a review of magma-sediment mingling</h1>
  386.     <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Skilling, I.P.</span> and <span class="person_name">White, J.D.L.</span> and <span class="person_name">McPhie, J.</span> (2002) <xhtml:em>Peperite: a review of magma-sediment mingling.</xhtml:em> Journal of Volcanology and Geothermal Research, 114 (1-2). pp. 1-17. ISSN 0377-0273</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/1459/1/Skilling%2C_White%2C_McPhie_-_Peperite__a_review_of_magma-sediment_mingling.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1459/1/Skilling%2C_White%2C_McPhie_-_Peperite__a_review_of_magma-sediment_mingling.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />323Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="1866" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1016/S0377-0273(01)00278-5">http://dx.doi.org/10.1016/S0377-0273(01)00278-5</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The study of peperite is important for understanding magma-water interaction and explosive hydrovolcanic hazards. This paper reviews the processes and products of peperite genesis. Peperite is common in arc-related and other volcano-sedimentary sequences, where it can be voluminous and dispersed widely from the parent intrusions. It also occurs in phreatomagmatic vent-filling deposits and along contacts between sediment and intrusions, lavas and hot volcaniclastic deposits in many environments. Peperite can often be described on the basis of juvenile clast morphology as blocky or fluidal, but other shapes occur and mixtures of different clast shapes are also found. Magma is dominantly fragmented by quenching, hydromagmatic explosions, magma-sediment density contrasts, and mechanical stress as a consequence of inflation or movement of magma or lava. Magma fragmentation by fluid-fluid shearing and surface tension effects is probably also important in fluidal peperite. Fluidisation of host sediment, hydromagmatic explosions, forceful intrusion of magma and sediment liquefaction and shear liquification are probably the most important mechanisms by which juvenile clasts and host sediment are mingled and dispersed. Factors which could influence fragmentation and mingling processes include magma, host sediment and peperite rheologies, magma injection velocity, volatile content of magma, total volumes of magma and sediment involved, total volume of pore-water heated, presence or absence of shock waves, confining pressure and the nature of local and regional stress fields. Sediment rheology may be affected by dewatering, compaction, cementation, vesiculation, fracturing, fragmentation, fluidisation, liquefaction, shear liquification and melting during magma intrusion and peperite formation. The presence of peperite intraclasts within peperite and single juvenile clasts with both sub-planar and fluidal margins imply that peperite formation can be a multi-stage process that varies both spatially and temporally. Mingling of juvenile clast populations, formed under different thermal and mechanical conditions, complicates the interpretation of magma fragmentation and mingling mechanisms. </p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">peperite; review; hydromagmatism; magma-water interaction; magma-sediment mingling</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/260100.html">260000 Earth Sciences &gt; 260100 Geology</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1459</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Mrs Katrina Keep</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">15 Aug 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">30 Jan 2008 15:18</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1459;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=1459">item control page</a></p>
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