402:
35:
20:
64:) fragments (clasts) formed by quench fragmentation of lava flow surfaces during submarine or subglacial extrusion. It occurs as thin margins on the lava flow surfaces and between pillow lavas as well as in thicker deposits, more commonly associated with explosive, volatile-rich eruptions as well as steeper topography. Hyaloclastites form during volcanic eruptions
173:
Naylor, P.H., Bell, B.R., Jolley, D.W., Purnall, P. & Fredsted, R. 1999. Palaeogene magmatism in the Faeroe-Shetland Basin: influences on uplift history and sedimentation. In: Fleet, A.J. & Boldy, S.A.R. (eds) Petroleum
Geology of Northwest Europe: Proceedings of the 5th Conference, 545-558.
72:
or where subaerial flows reach the sea or other bodies of water. It commonly has the appearance of angular flat fragments sized between a millimeter to few centimeters. The fragmentation occurs by the force of the volcanic explosion, or by thermal shock and spallation during rapid cooling.
1173:
130:, which is a type of distinctive, flat-topped, steep-sided volcano formed when lava erupts through a thick glacier or ice sheet.
438:
182:
145:, eventually building up to sea level, allowing the subaerial flow to move forwards until it reaches the sea again.
215:
42:
154:
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1447:
503:
471:
431:
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923:
888:
1442:
208:
8:
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111:
107:
69:
719:
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123:
65:
1452:
679:
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1371:
1083:
870:
739:
119:
1183:
943:
796:
270:
244:
201:
53:
1376:
1218:
811:
734:
496:
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331:
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99:. Fragments of these glasses are usually surrounded by a yellow waxy layer of
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382:
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81:
1235:
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glass rapidly quenched in water. It is transparent and pure, lacking the
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24:
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749:
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664:
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629:
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604:
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134:
100:
89:
401:
34:
1416:
1406:
1396:
1381:
1351:
1331:
1316:
1311:
1276:
1271:
1230:
1223:
1188:
1158:
1143:
1121:
1063:
1043:
1038:
1028:
1013:
993:
968:
963:
958:
948:
938:
913:
878:
791:
759:
709:
699:
674:
649:
644:
584:
545:
508:
387:
367:
362:
326:
96:
19:
1391:
1366:
1291:
1261:
1256:
1178:
1163:
1131:
1111:
1008:
983:
860:
835:
828:
806:
801:
754:
694:
579:
530:
520:
466:
372:
352:
321:
285:
193:
92:
38:
1411:
1341:
1306:
1281:
1213:
1048:
988:
928:
893:
786:
634:
594:
562:
557:
461:
416:
347:
115:
57:
28:
1321:
1296:
1193:
1153:
1116:
1018:
883:
781:
771:
724:
689:
659:
589:
574:
552:
486:
481:
377:
225:
85:
141:
formed ahead of the expanding delta. The foresets fill in the
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1208:
1203:
1068:
1033:
953:
908:
903:
1058:
1003:
918:
850:
127:
103:, formed by reaction of sideromelane with water.
1434:
137:, hyaloclastites form the main constituent of
432:
209:
439:
425:
216:
202:
95:dispersed in the more commonly occurring
33:
18:
183:Volcanoes of Canada: Types of volcanoes
114:, are a prominent landscape feature of
1435:
16:Volcaniclastic accumulation or breccia
420:
197:
223:
122:. Hyaloclastite is usually found at
60:consisting of glass (from the Greek
80:are found in hyaloclastite masses.
13:
446:
14:
1469:
189:
400:
106:Hyaloclastite ridges, formed by
167:
43:Hawaii Volcanoes National Park
1:
160:
118:and the Canadian province of
7:
233:Basalts by tectonic setting
174:Geological Society, London.
148:
10:
1474:
45:, the Big Island of Hawaii
1244:
1082:
869:
452:
396:
340:
294:
263:
232:
264:Basalts by form and flow
504:Basaltic trachyandesite
472:Alkali feldspar granite
245:Mid-ocean ridge basalt
46:
41:enters the Pacific at
31:
23:Hyaloclastite between
889:Banded iron formation
185:Accessed Jan. 8, 2006
37:
22:
307:Calc-alkaline basalt
295:Basalts by chemistry
124:subglacial volcanoes
108:subglacial eruptions
255:Volcanic arc basalt
250:Ocean island basalt
112:last glacial period
1245:Specific varieties
407:Geology portal
341:Important minerals
47:
32:
1430:
1429:
680:Nepheline syenite
414:
413:
302:Tholeiitic basalt
143:seabed topography
1465:
1372:Rapakivi granite
1084:Metamorphic rock
871:Sedimentary rock
740:Quartz monzonite
441:
434:
427:
418:
417:
405:
404:
218:
211:
204:
195:
194:
175:
171:
120:British Columbia
56:accumulation or
1473:
1472:
1468:
1467:
1466:
1464:
1463:
1462:
1433:
1432:
1431:
1426:
1240:
1184:Pseudotachylite
1078:
865:
797:Tephriphonolite
448:
445:
415:
410:
399:
392:
336:
290:
271:Columnar basalt
259:
228:
222:
192:
179:
178:
172:
168:
163:
151:
25:pillows of lava
17:
12:
11:
5:
1471:
1461:
1460:
1458:Volcanic rocks
1455:
1450:
1448:Vitreous rocks
1445:
1428:
1427:
1425:
1424:
1419:
1414:
1409:
1404:
1399:
1394:
1389:
1384:
1379:
1377:Rhomb porphyry
1374:
1369:
1364:
1359:
1354:
1349:
1344:
1339:
1334:
1329:
1324:
1319:
1314:
1309:
1304:
1299:
1294:
1289:
1284:
1279:
1274:
1269:
1264:
1259:
1254:
1248:
1246:
1242:
1241:
1239:
1238:
1233:
1228:
1227:
1226:
1219:Talc carbonate
1216:
1211:
1206:
1201:
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1191:
1186:
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1119:
1114:
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1099:
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1079:
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1071:
1066:
1061:
1056:
1051:
1046:
1041:
1036:
1031:
1026:
1021:
1016:
1011:
1006:
1001:
996:
991:
986:
981:
976:
971:
966:
961:
956:
951:
946:
941:
936:
931:
926:
921:
916:
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901:
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886:
881:
875:
873:
867:
866:
864:
863:
858:
853:
848:
843:
838:
833:
832:
831:
821:
820:
819:
812:Trachyandesite
809:
804:
799:
794:
789:
784:
779:
774:
769:
768:
767:
762:
752:
747:
742:
737:
735:Quartz diorite
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712:
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697:
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687:
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497:Picrite basalt
494:
484:
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450:
449:
447:Types of rocks
444:
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332:Picrite basalt
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190:External links
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54:volcanoclastic
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1337:Litchfieldite
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1325:
1323:
1320:
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1310:
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1302:Hyaloclastite
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1149:Litchfieldite
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1128:
1125:
1123:
1120:
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723:
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715:Phonotephrite
713:
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623:
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620:Hyaloclastite
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519:
515:
512:
510:
507:
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505:
502:
498:
495:
493:
492:Alkali basalt
490:
489:
488:
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483:
480:
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475:
473:
470:
468:
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463:
460:
459:
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320:
318:
315:
313:
312:Alkali basalt
310:
308:
305:
303:
300:
299:
297:
293:
287:
286:Pahoehoe lava
284:
282:
279:
277:
276:Pillow basalt
274:
272:
269:
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262:
256:
253:
251:
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241:
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219:
214:
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207:
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51:
50:Hyaloclastite
44:
40:
39:Pahoehoe lava
36:
30:
26:
21:
1347:Luxullianite
1327:Lapis lazuli
1301:
1272:Blue Granite
1199:Serpentinite
1174:Metapsammite
924:Conglomerate
846:Trondhjemite
824:Trachybasalt
765:Pantellerite
670:Monzogranite
619:
615:Hornblendite
600:Granodiorite
454:Igneous rock
398:
383:Cristobalite
317:Trachybasalt
240:Flood basalt
169:
132:
105:
82:Sideromelane
75:
61:
49:
48:
1443:Volcanology
1236:Whiteschist
1127:Greenschist
1107:Cataclasite
1097:Amphibolite
1024:Phosphorite
974:Itacolumite
899:Calcarenite
745:Quartzolite
685:Nephelinite
655:Lamprophyre
610:Harzburgite
568:Napoleonite
541:Charnockite
536:Carbonatite
526:Blairmorite
477:Anorthosite
358:Plagioclase
135:lava deltas
110:during the
78:mineraloids
66:under water
1437:Categories
1402:Teschenite
1387:Shonkinite
1362:Pietersite
1357:Novaculite
1267:Borolanite
1252:Adamellite
1169:Metapelite
1137:Calcflinta
1102:Blueschist
1092:Anthracite
1074:Wackestone
1054:Travertine
999:Lumachelle
979:Jaspillite
934:Diamictite
856:Websterite
841:Troctolite
817:Benmoreite
777:Shonkinite
750:Rhyodacite
730:Pyroxenite
705:Peridotite
665:Lherzolite
640:Kimberlite
630:Ignimbrite
625:Icelandite
605:Granophyre
514:Shoshonite
161:References
126:, such as
101:palagonite
90:iron oxide
1417:Variolite
1407:Theralite
1397:Tachylite
1382:Rodingite
1352:Mangerite
1332:Larvikite
1317:Jasperoid
1312:Jadeitite
1277:Epidosite
1231:Tectonite
1224:Soapstone
1189:Quartzite
1159:Migmatite
1144:Itabirite
1122:Granulite
1064:Turbidite
1044:Sylvinite
1039:Siltstone
1029:Sandstone
1014:Oil shale
994:Limestone
969:Gritstone
964:Greywacke
959:Geyserite
949:Evaporite
939:Diatomite
914:Claystone
879:Argillite
792:Tachylyte
760:Comendite
710:Phonolite
700:Pegmatite
675:Monzonite
650:Lamproite
645:Komatiite
585:Foidolite
546:Enderbite
509:Mugearite
388:Tridymite
368:Magnetite
363:Amphibole
327:Mugearite
224:Types of
155:Hyalotuff
97:tachylite
70:under ice
1453:Breccias
1392:Taconite
1367:Pyrolite
1292:Ganister
1262:Aphanite
1257:Appinite
1179:Phyllite
1164:Mylonite
1132:Hornfels
1112:Eclogite
1009:Mudstone
984:Laterite
944:Dolomite
861:Wehrlite
836:Trachyte
829:Hawaiite
807:Tonalite
802:Tephrite
755:Rhyolite
720:Porphyry
695:Obsidian
580:Essexite
531:Boninite
521:Basanite
467:Andesite
373:Ilmenite
353:Pyroxene
322:Hawaiite
149:See also
139:foresets
93:crystals
76:Several
1412:Unakite
1342:Llanite
1307:Ijolite
1282:Felsite
1214:Suevite
1049:Tillite
989:Lignite
929:Coquina
894:Breccia
787:Syenite
635:Ijolite
595:Granite
563:Diorite
558:Diabase
462:Adakite
348:Olivine
281:Aa lava
226:basalts
116:Iceland
58:breccia
29:Montana
1322:Kenyte
1297:Gossan
1194:Schist
1154:Marble
1117:Gneiss
1019:Oolite
884:Arkose
782:Sovite
772:Scoria
725:Pumice
690:Norite
660:Latite
590:Gabbro
575:Dunite
553:Dacite
487:Basalt
482:Aplite
378:Quartz
86:basalt
62:hyalus
1287:Flint
1209:Slate
1204:Skarn
1069:Varve
1034:Shale
954:Flint
909:Chert
904:Chalk
128:tuyas
84:is a
52:is a
1059:Tufa
1004:Marl
919:Coal
851:Tuff
1422:Wad
133:In
27:in
1439::
68:,
440:e
433:t
426:v
217:e
210:t
203:v
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