Page 10 - Volcanic Textures A Guide To The Interpretation of Textures In Volcanic Rocks

List of Plates

Plate 1—Evenly porphyritic and volcaniclastic textures ................................................................................................ 34
Plate 2—Vesicles and volcanic glass ............................................................................................................................... 36
Plate 3—Spherulites and lithophysae............................................................................................................................ 38
Plate 4—Micropoikilitic texture in rhyolite .................................................................................................................. 40
Plate 5—Perlite .............................................................................................................................................................. 42
Plate 6—Pumice, scoria, bombs and juvenile blocks ................................................................................................... 44
Plate 7—Shards, lithic fragments and accretionary lapilli ........................................................................................... 46
Plate 8—Flow foliations ................................................................................................................................................ 48
Plate 9—Columnar joints, "tiny normal joints" and tortoise shell joints .................................................................... 50
Plate 10—Autoclastic breccia and talus ........................................................................................................................ 72
Plate 11—Hyaloclastite ................................................................................................................................................. 74
Plate 12—Hyaloclastite ................................................................................................................................................. 76
Plate 13—Hyaloclastite varieties and feeder dykes ....................................................................................................... 78
Plate 14—Peperite (intrusive hyaloclastite) .................................................................................................................. 80
Plate 15—Pillowed lava flows and pillows .................................................................................................................... 82
Plate 16—Rinds and crusts on pillow lobes ................................................................................................................ 84
Plate 17—Pillows ........................................................................................................................................................... 86
Plate 18—Products of silicic lava dome eruptions in shallow water: Bunga Beds, NSW .......................................... 88
Plate 19—Subaerial lava flows and domes .................................................................................................................... 90
Plate 20—Textures in glassy, subaerial rhyolitic lava .................................................................................................... 92
Plate 21—Three types of pyroclastic flow deposits .................................................................................................... 124
Plate 22—Geometry and components of pyroclastic flow deposits ........................................................................... 126
Plate 23—Vapour-phase crystallised and slightly welded ignimbrites ....................................................................... 128
Plate 24—Welding and granophyric crystallisation textures in ignimbrite ............................................................... 130
Plate 25—Lithophysae and Spherulites in welded ignimbrite ................................................................................... 132
Plate 26—Heat retention in pyroclastic flow deposits and high-grade ignimbrite ................................................... 134
Plate 27—Welded ignimbrite in the Mount Read Volcanics .................................................................................... 136
Plate 28—Subaqueously emplaced pyroclastic flow deposits: northern Wales, UK .................................................. 138
Plate 29—Volcaniclastic turbidites.............................................................................................................................. 140
Plate 30—Syn-eruptive submarine volcaniclastic megaturbidite ................................................................................ 142
Plate 31—Volcaniclastic megaturbidites ..................................................................................................................... 144
Plate 32—Submarine, lithic-rich, volcaniclastic mass-flow deposits ......................................................................... 146
Plate 33—Components in subaqueous, volcaniclastic mass-flow deposits ................................................................ 148
Plate 34—Deposits from subaqueous volcaniclastic debris flows .............................................................................. 150
Plate 35—Deposits from subaerial lahars and volcaniclastic debris flows ................................................................. 152
Plate 36—Subaerial grain-flow and volcanic debris-avalanche deposits .................................................................... 154
Plate 37—Massive sulfide clasts in submarine volcaniclastic mass-flow deposits ................................................... 156
Plate 38—Traction current structures in volcanogenic sediments and pyroclastic surge deposits ........................... 158
Plate 39—Subaerial pyroclastic fall deposits .............................................................................................................. 160
Plate 40—Textures and structures in volcaniclastic deposits from suspension, flotation and traction ..................... 162
Plate 41—Syn-eruptive volcaniclastic deposits from shallow submarine explosive activity ....................................... 164
Plate 42—Altered coherent lava and related breccia .................................................................................................. 170
Plate 43—Pseudobreccia and altered volcanic breccia ................................................................................................ 172
Plate 44—Altered devitrified silicic lava ........................................................................................... .' ........................ 174
Plate 45—Altered pumiceous volcaniclastic deposits .................................................................................................. 176
Plate 46—Altered and deformed pumiceous volcaniclastic deposits .......................................................................... 178