Page 208 - Volcanic Textures A Guide To The Interpretation of Textures In Volcanic Rocks

hyaloclastite 15, 22, 27, 28, 32-33, 54-57, 60, 61, 166, 2, block lava 54, 60, 10.6
Table 3, 11, 12, 13 chemical composition 7, 12, 21, 9, Table 1
angular fragment breccia 55, 63, 65, 17.7 dacitic 66-69, 31, 32, 33, 36, 1.1, 8.4-5, 8.7, 9.1, 10.4,
concentric pillow 32, 56, 65, 13.3-4 19.4, 42.7, 44.1, 44.7
in situ 55-57, 61-66, 71, 4, 19, 21, 26, 27, 28, 29, 31, degassing of 27
32, 11.1-7, 12, 13.5, 13.7, 42.2-4, 42.8, 43.2 flow foliation 30-31, 8, 44.3-7
intrusive (see also peperite) 53, 55, 57-58, 64-66, 166, jointing 31-33, 9
22, 26, 29, 30, 14, 18.3, 43.1 on graphic logs 12
pillow fragment breccia 56, 61, 2, 25, 15.4, 17.1 pahoehoe 23, 60, 69-70, 34, 35, 19.6-7
resedimented 55-56, 61-66, 4, 20, 26, 28, 29, 31, 32, pillow lava 56, 58-61, 2, 23, 25, 34, 9.4, 14.5-6, 15, 16, 17
11.8,37.5 pumiceous 27, 54, 65, 66-69, 33, 2.1, 20
hydration (see also perlite) 15, 22, 23, 25-26, 68-69, 97, 165, 5, psuedo-pillow 33, 56, 18, 9.6, 17.7
12.5, 24.1, 42.1, 42.6
rhyolitic 61-69, 26, 27, 28, 29, 30, 33, 3.1-6, 4, 5.1, 7.5,
hydraulic fracture 166, 42.5 8.1-2, 11.1-3, 18, 19.1-2, 20, 44.3-6
hydraulic sorting 65, 18.7, 32.5, 38.2, 40.8 sheet 60
hydroclastic breccia 56-57, 58 silicic (see also dacitic, rhyolitic) 27-28, 61-64, 65-69,
hydrothermal alteration see alteration 26, 27, 28, 33, 3, 4, 18, 19.1-2, 19.4, 20
hydrovolcanic 95 younging indicator 22-23, 59, 34, 17.2, 17.5
hyperconcentrated flow 113, 35.5, 35.7 lava delta 59
ignimbrite (see also pyroclastic flow deposit) 30, 31, 99, 102, 3, lava dome (see also cryptodome) 1, 2, 27-28, 29, 30, 53-58, 61-
40, 41, 42, 43, 1.4, 2.6, 7.2, 21.5-7, 22, 23, 24, 25, 69, 71, 99, 121, 26, 29, 31, 32, 33, 38, 10.4, 18, 19.1, 33.1-
26, 27, 28 2, 41
lava-like 3, 15, 22, 30-31, 104, 3 lava fountain 28, 53, 61, 95, 13.1
Mount Read Volcanics 27 lava levee 69
rheomorphic 3, 15, 22, 30-31, 104, 26.3-5 lava-like ignimbrite see ignimbrite lava lobe 32, 33, 55-56, 58,
60, 61-64, 19, 27, 13.5
welded 102-104, 1.4, 2.6, 3.7, 22.3-4, 24, 25, 26.1,
27, 28.4-5 lee-side lense (see also pyroclastic flow deposit) 22.7
lithic fragment 29, 96, 100, 115, 3, 9, Table 2, 7.4-5, 22.3-5,
ignimbrite veneer (see also pyroclastic flow deposit) 104, 43, 22.7 25.4
indurated sediment 58, 60, 61, 64, 13.6, 14.4, 14.9 accessory lithic pyroclast 27, 29, 95, 96, 105
in situ fragmentation 22, 27, 29, 30, 54, 36.2-3, 36.6, 37.3, accidental lithic clast 29, 105
42.2-3, 42.5, 44.2
cognate lithic pyroclast 29, 25.4
intraclast 29, 4, 9, 44, 30.6-7, 31, 34.5
in fall deposits 39.4
isolated pillow breccia 56 in mass-flow deposits 7.4, 31.2, 33.6-8, 37
jigsaw-fit texture 22, 54, 56, 57, 115, 2, 9, 11.1-7, 12, 14.8-9,
36.2-3, 37.3, 39.4, 42.2-3, 42.5, 44.2 in pyroclastic flow deposits 100, 105, 1.4, 22.3-5, 25.4
provenance 108, 33.6-8, 37
joint 24, 31-33, 66, 71, 17, 18, Table 1, Table 2
lithophysae (see also devitrification) 3, 15, 24, 25, 69, 103, 167,
columnar 15, 31-32, 71, 17, 19, 36, 9.1-3, 9.5, 13.7,
19.2, 26.1-2 2, 9 , Table 1, 3.3, 3.7, 25.1, 44.3-4
concentric 32, 56, 59, 13.3-4 Little Glass Mountain rhyolite flow, USA 68-69, 2.1, 20
platy 71, 36 Lower Rhyolitic Tuff Formation, UK 107, 28.2
prismatic 22.2, 36.7, 40.3 macro-perlite (see also perlite) 26, 42.6
magma mixing 21, 23, 27, 69, 105, 6.5
radial columnar 32, 59, 9.3-4, 15.7, 16.1, 17.6
mantle bedding (see also sedimentary structure) 120, 58, 39.1
"tiny normal joints" 28, 33, 54, 56, 2, 18, 9.6, 17.7
tortoise shell 32, 59, 18, 9.7, 15.2, 17.4, 17.7 mass-flow deposit 15, 22, 98-116, 121, 122, 5, 37, 46, 47, 48,
49, 50, 51, 52, 59, Table 4, 18.1, 18.4-6, 29, 30, 31,
Juan de Fuca Ridge 53, 60 32, 33, 34, 35, 36, 37, 45, 46
juvenile clast 27-28, 30, 33, 105, 113, 115, 116, 3, 4, 9 internal facies 98, 37
Krakatau, Indonesia 106 massive sulfide clasts 116, 53, 37
lahar (see also mass-flow deposit) 97, 113-114, 35 particle support 97-98, 108, 46, 47, 48
lapilli 6, Table 3 pumiceous 96-97, 106-107, 37, 44, 45, 29A, 30,
33.1-5, 45,46
lapillistone 6, Table 3
subaerial 7.7, 35, 36
lapilli-tuff 6, Table 3
lava (see also autoclastic deposit, coherent texture) 1, 2, 3, 7, 15, subaqueous 18.4-6, 29, 30, 31, 32, 33, 34, 37, 45, 46
21, 22, 23, 24, 25, 26, 27-28, 29, 53-71, 99, 1, 2, types 98
Table 1 massive sulfide clasts 116, 53, 37
a'a 27, 54, 69-70, 34, 19.7 megaturbidite see turbidite
alteration 166-168, 3.5-6 microlite (see also quench crystal) 23, 166-167, 20
andesitic 60, 71, 19, 22, 24, 25, 361.2, 9.2-3, 10.5-6, micropoikilitic texture (see also devitrification) 3, 15, 24-25, 69,
15.1, 16.2, 17.6, 19.5 103, 2, 4
basaltic 60-61, 69-70, 17, 25, 34, 35,2.2, 8.8, 9.4-5, microspherulitic texture (see also devitrification) 3, Table 1, 3.2-3
15.2-7, 16.1, 17.2-4, 19.3, 19.6-7 mixed facies (see also debris-avalanche deposit) 115-116, 52, 36.2
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