Knowledge (XXG)

Azas Plateau

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Yurdawa between Derbi-Taiga and Shivit-Taiga, 225,000 ± 50,000 for Ploskii, 150,000 ± 50,000 for Kokhemskii, 130,000 ± 40,000 - 110,000 ± 000 for Shivit-Taiga, 75,000 ± 40,000 for Priozernyi, 60,000 ± 40,000 for Sorug-Chushku-Uzu and 48,000 ± 20,000 for Ulug-Arginskii. Some lava flows in the Bii-Khem valley are even younger than the Ulug-Arginskii volcano. It is possible that when eruptions in the Azas Plateau occurred beneath ice, they caused floods of glacial meltwater called
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subaqueous activity forms hyaloclastite and when the activity occurs in the air lava flows are formed, including lava deltas. Some of the tuyas in the Azas Plateau may have formed through complex eruptive processes. Based on the tuyas of the Tuvan field, it has been determined that ice thicknesses in the area exceeded 700 metres (2,300 ft) and that at least three different
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volcanism occurred in the southeastern parts of the field. Some dates obtained on edifices in the Azas Plateau are 725,000 ± 50,000 - 760,000 ± 50,000 years for Derbi-Taiga, 600,000 - 560,000 years for Kadyr-Sugskii, 600,000 - 290,000 for some volcanoes surrounding Derbi-Taiga, 350,000 - 290,000 for
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with a lake to the south, and a lava flow from the cone reached 10 kilometres (6.2 mi) in length. Shivit-Taiga with a length of over 10 kilometres (6.2 mi) and a height of 500 metres (1,600 ft) is among the biggest volcanoes in the world that formed beneath ice, but Derby-Taiga may be
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which formed on the East Sayan mountains during the Pleistocene. When volcanoes erupt into ice, the ice melts and volcanic structures named tuyas can form in meltwater lakes. Runny lavas can form such edifices, which tend to have steep slopes, only when trapped within ice. During tuya activity, the
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250 metres (820 ft) formed during the Late Pliocene, when the largest eruptions took place. These flows reached a thickness of approximately 250 metres (820 ft). Nine volcanoes bearing evidence of having formed beneath ice are found in the southeastern part of the field. Volcanoes on the
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formed in two craters on the volcano. Shivit-Taiga too is accompanied by a topography that indicates that ancient floods passed there. Kokhemskii is 2,648 metres (8,688 ft) and was affected by glacial erosion. Sorug-Chushku-Uzu 1 kilometre (0.62 mi) north of Shivit-Taiga is 2,525 metres
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plateau are about 400–600 metres (1,300–2,000 ft) high and have the form of tables. Ash cones formed on the individual edifices. The lava flows on the table-shaped volcanoes also display rounded hollows. Many volcanoes appear to be part of a lineament. Volcanism may be influenced by
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Komatsu, Goro; Baker, Victor R.; Arzhannikov, Sergei G.; Gallagher, Ronnie; Arzhannikova, Anastasia V.; Murana, Alessio; Oguchi, Takashi (13 July 2015). "Catastrophic flooding, palaeolakes, and late Quaternary drainage reorganization in northern Eurasia".
432:(127,000 - 71,000 years ago) and by the stage 4 (71,000 - 57,000 years ago) it was continuous over the Azas Plateau. Glacier retreat was underway by the isotope stage 3 (57,000 - 24,000 years ago), when some volcanoes formed in the air. 1323:
Komatsu, Goro; Arzhannikov, Sergei G.; Arzhannikova, Anastasia V.; Ori, Gian Gabriele (August 2007). "Origin of glacial–fluvial landforms in the Azas Plateau volcanic field, the Tuva Republic, Russia: Role of ice–magma interaction".
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Arzhannikov, S.G.; Braucher, R.; Jolivet, M.; Arzhannikova, A.V. (November 2015). "Late Pleistocene glaciations in southern East Sayan and detection of MIS 2 terminal moraines based on beryllium (10Be) dating of glacier complexes".
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which form by eruptions of volcanoes into ice. Ice meltwater floods may have accompanied this activity. The youngest dated volcanic centre was active 48,000 ± 20,000 years ago, but some lava flows may be even younger.
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Komatsu, Goro; Gabriele Ori, Gian; Ciarcelluti, Paolo; D. Litasov, Yury (January 2004). "Interior layered deposits of Valles Marineris, Mars: analogous subice volcanism related to Baikal Rifting, Southern Siberia".
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Jolivet, M.; Arzhannikov, S.; Arzhannikova, A.; Chauvet, A.; Vassallo, R.; Braucher, R. (January 2013). "Geomorphic Mesozoic and Cenozoic evolution in the Oka-Jombolok region (East Sayan ranges, Siberia)".
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and the Todzha basin. There it covers a surface area of 2,000 square kilometres (770 sq mi) west of Lake Baikal, at an altitude of 2,000 metres (6,600 ft). Volcanic landforms include cones,
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Some volcanoes have been affected by landsliding, gully formation and glaciation after their formation. Likewise, the field has been affected by erosion, forming deep valleys with glacier deposits.
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Komatsu, Goro; Arzhannikov, Sergei G.; Arzhannikova, Anastasia V.; Ershov, Kirill (August 2007). "Geomorphology of subglacial volcanoes in the Azas Plateau, the Tuva Republic, Russia".
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even larger depending on how the size is measured. Shivit-Taiga covers a surface of 100 square kilometres (39 sq mi) and is 500 metres (1,600 ft) high. This edifice is a
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in Russia. It is also known as East Tuva Plateau, Khamsara-Biykhem Plateau and Northeast Tuva Plateau. It covers a surface area of 2,000 square kilometres (770 sq mi) west of
428:. Non-tuya volcanic ice interaction landforms are also found, such as Albine-Bondok, Charash-Dag and Sagan which are subglacial mounds. Glaciation was already in progress under 1227:
Arzhannikov, Sergei G.; Braucher, Regis; Jolivet, Marc; Arzhannikova, Anastasia V.; Vassallo, Riccardo; Chauvet, Alain; Bourlès, Didier; Chauvet, Frédéric (August 2012).
284:. Together with the Oka Plateau, the Azas Plateau forms the East Sayan province of the Baikal Rift Zone. Activity in the Azas Plateau has been influenced by a tectonic 1397:
Litasov, Yury; Hasenaka, Toshiaki; Litasov, Konstantin; Yarmolyuk, Vladimir; SUGORAKOVA, Amina; LEBEDEV, Vladimir; SASAKI, Minoru; TANIGUCHI, Hiromitsu (2002-03-01).
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in the area. The Azas Plateau is the largest lava field in the Tuva volcanic province. The Jom-Bolok volcanic field may be related to the Azas Plateau.
84: 45: 1442: 1457: 77: 1447: 1437: 452:. Other volcanoes in the Baikal Rift Zone have erupted the same rocks. These rocks are alkaline and their texture is 484:
in the more alkaline rocks. The total volume of volcanic rocks is about 600 cubic kilometres (140 cu mi).
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HASENAKA, Toshiaki; LITASOV, Yury D.; TANIGUCHI, Hiromitsu; MIYAMOTO, Tsuyoshi; FUJIMAKI, Hirokazu (1999-03-01).
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that has raised the terrain as high as 3,000 metres (9,800 ft). Activity in the rift zone started in the
897: 577: 429: 131: 1228: 1399:"Petrologic Characteristics of Cenozoic Alkaline Basalts from the Azas Plateau, Northeast Tuva (Russia)" 355:
also exist. A system of ancient valleys formed by floods are found near to Derbi-Taiga. Ulug-Arginskii (
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Volcanic activity in the Azas Plateau commenced during the Late Pliocene. Activity continued into the
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and displays a prominent "winged" topography. The hyaloclastite layers were formerly considered to be
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in a remote area where access is difficult. The volcanoes were first described between 1850 and 1900.
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and it features two craters with diameters of 250 metres (820 ft) and 100 metres (330 ft).
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occurred in the field. The tuyas in the Azas plateau have been compared to volcanic edifices in the
121: 1363: 168: 520:. Before volcanism of the Azas Plateau started, volcanism occurred in the Oka plateau. The Azas 1410: 1268: 531:. Later the activity focused on deep-seated lineaments. Volcanic activity between 1.65 - 1.75 302: 273: 1229:"History of late Pleistocene glaciations in the central Sayan-Tuva Upland (southern Siberia)" 453: 1385: 1355: 1333: 1311: 1290: 1243: 1215: 527:
The first volcanic activity beginning 2 million years ago formed voluminous lava flows from
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lava plateau. Several volcanoes formed under the influence of ice and are constructed by
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occurred beneath ice in the ancient valleys of the Bii Khem river. In the middle-late
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is present in the rocks and gives many tuyas a red colour. Based on geochemistry, the
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Individual volcanoes in the Azas Plateau volcanic field include the Derbi-Taiga tuya (
1426: 1367: 589: 587: 544:; corresponding landforms have been found at Derbi-Taiga and Shivit-Taiga volcanoes. 461: 392: 253: 249: 229: 225: 187: 143: 1247: 1337: 1315: 936: 934: 528: 449: 1359: 951: 949: 843: 841: 1294: 1131: 1129: 1104: 1102: 724: 722: 536: 469: 352: 217: 164: 567: 1389: 1219: 541: 532: 241: 213: 183: 1414: 1272: 373: 360: 330: 317: 99: 86: 481: 477: 412: 396: 344: 277: 1256: 517: 501: 497: 485: 473: 441: 386:) is a cone that formed exposed in the air. The cone is accompanied by a 179: 1398: 1176: 1045: 1018: 1006: 913: 757: 713: 662: 465: 417: 281: 204: 1164: 1069: 1057: 994: 832: 635: 620: 1120: 871: 769: 457: 445: 285: 257: 233: 1152: 1033: 982: 970: 811: 784: 698: 674: 593: 34:
East Tuva Plateau, Khamsara-Biykhem Plateau, Northeast Tuva Plateau
489: 940: 647: 605: 1188: 955: 925: 847: 740: 686: 425: 387: 348: 191: 20: 1135: 1108: 1093: 1081: 859: 796: 728: 343:), which is formed by several layers of hyaloclastite and 888:"Azas Plateau: Subfeatures Synonyms & Subfeatures" 444:, volcanic rocks erupted by the Azas Plateau include 167:. Volcanic activity in the area also occurred at the 142: 130: 120: 115: 76: 71: 28: 216:, tuyas, and other volcanic structures including 492:formed at depths of 80 kilometres (50 mi). 351:and reach thicknesses of 8 metres (26 ft). 268:It is part of the Tuva volcanic province of the 1257:"Cenozoic Volcanism in Siberia : A review" 252:, crosses the field. The field lies within the 882: 880: 496:rocks were originally considered to be tuffs. 8: 456:. Minerals contained in the rocks include 25: 552: 296:A large lava field with thicknesses of 562: 560: 558: 556: 7: 411:The Azas Plateau was affected by an 52: 568:"Azas Plateau: General Information" 508:have been found at some volcanoes. 280:and reached its maximum during the 14: 203:The field is located in southern 524:formed in the Miocene-Pliocene. 51: 44: 1283:Journal of Asian Earth Sciences 1248:10.1016/j.quascirev.2012.06.005 1338:10.1016/j.geomorph.2006.12.003 1316:10.1016/j.geomorph.2006.12.002 1208:Russian Geology and Geophysics 305:associated with the Jom-Bolok 178:The field is formed by a late 1: 1360:10.1080/00206814.2015.1048314 297: 1348:International Geology Review 1295:10.1016/j.jseaes.2011.09.017 1378:Planetary and Space Science 1474: 1236:Quaternary Science Reviews 248:river, a tributary of the 18: 1390:10.1016/j.pss.2003.08.003 1220:10.1016/j.rgg.2015.10.001 38: 33: 893:Global Volcanism Program 573:Global Volcanism Program 173:Jom-Bolok volcanic field 19:Not to be confused with 16:Volcanic field in Russia 1403:Northeast Asian Studies 1261:Northeast Asian Studies 1165:Arzhannikov et al. 2012 1070:Arzhannikov et al. 2015 1058:Arzhannikov et al. 2015 995:Arzhannikov et al. 2015 898:Smithsonian Institution 833:Arzhannikov et al. 2012 636:Arzhannikov et al. 2012 621:Arzhannikov et al. 2012 578:Smithsonian Institution 272:, which is linked to a 430:marine isotope stage 5 400:(8,284 ft) high. 232:. Other landforms are 190:, these are so-called 1443:Pleistocene volcanism 440:Volcanism is overall 407:Effects of glaciation 374:52.38833°N 98.38528°E 331:52.37083°N 98.23556°E 956:HASENAKA et al. 1999 926:HASENAKA et al. 1999 848:HASENAKA et al. 1999 741:HASENAKA et al. 1999 1458:Volcanoes of Russia 1189:Komatsu et al. 2015 1177:Komatsu et al. 2004 1153:Komatsu et al. 2007 1136:Litasov et al. 2002 1121:Jolivet et al. 2013 1109:Litasov et al. 2002 1094:Litasov et al. 2002 1082:Litasov et al. 2002 1046:Komatsu et al. 2004 1034:Komatsu et al. 2007 1019:Komatsu et al. 2004 1007:Komatsu et al. 2004 983:Komatsu et al. 2007 971:Komatsu et al. 2007 941:Komatsu et al. 2007 928:, pp. 264–265. 914:Komatsu et al. 2004 872:Jolivet et al. 2013 860:Litasov et al. 2002 812:Komatsu et al. 2007 797:Litasov et al. 2002 785:Komatsu et al. 2007 770:Jolivet et al. 2013 758:Komatsu et al. 2004 729:Litasov et al. 2002 714:Komatsu et al. 2004 699:Komatsu et al. 2007 687:Komatsu et al. 2015 675:Komatsu et al. 2007 663:Komatsu et al. 2004 648:Komatsu et al. 2007 606:Komatsu et al. 2007 594:Komatsu et al. 2007 370: /  327: /  207:, between the East 96: /  1448:Holocene volcanism 1438:Pliocene volcanism 379:52.38833; 98.38528 336:52.37083; 98.23556 303:strike-slip faults 264:Geological context 72:Highest point 1453:Landforms of Tuva 1354:(14): 1693–1722. 1214:(11): 1509–1521. 1167:, pp. 23–24. 240:left by previous 154: 153: 126:Pliocene-Holocene 100:52.433°N 98.303°E 1465: 1418: 1393: 1384:(1–3): 167–187. 1371: 1341: 1332:(3–4): 352–366. 1319: 1310:(3–4): 312–328. 1298: 1276: 1251: 1233: 1223: 1192: 1186: 1180: 1174: 1168: 1162: 1156: 1150: 1139: 1133: 1124: 1118: 1112: 1106: 1097: 1091: 1085: 1079: 1073: 1067: 1061: 1055: 1049: 1043: 1037: 1031: 1022: 1016: 1010: 1004: 998: 992: 986: 980: 974: 968: 959: 953: 944: 938: 929: 923: 917: 911: 902: 901: 884: 875: 869: 863: 857: 851: 845: 836: 830: 815: 809: 800: 794: 788: 782: 773: 767: 761: 755: 744: 738: 732: 726: 717: 711: 702: 696: 690: 684: 678: 672: 666: 660: 651: 645: 639: 633: 624: 618: 609: 603: 597: 591: 582: 581: 564: 422:Valles Marineris 385: 384: 382: 381: 380: 375: 371: 368: 367: 366: 363: 342: 341: 339: 338: 337: 332: 328: 325: 324: 323: 320: 299: 270:Baikal Rift Zone 238:U-shaped valleys 149:Baikal Rift Zone 111: 110: 108: 107: 106: 101: 97: 94: 93: 92: 89: 55: 54: 48: 26: 1473: 1472: 1468: 1467: 1466: 1464: 1463: 1462: 1433:Volcanic fields 1423: 1422: 1421: 1396: 1374: 1344: 1322: 1301: 1279: 1254: 1231: 1226: 1204: 1200: 1195: 1191:, p. 1712. 1187: 1183: 1175: 1171: 1163: 1159: 1151: 1142: 1134: 1127: 1119: 1115: 1107: 1100: 1092: 1088: 1080: 1076: 1072:, p. 1519. 1068: 1064: 1060:, p. 1518. 1056: 1052: 1044: 1040: 1032: 1025: 1017: 1013: 1005: 1001: 997:, p. 1510. 993: 989: 981: 977: 969: 962: 954: 947: 939: 932: 924: 920: 912: 905: 886: 885: 878: 870: 866: 858: 854: 846: 839: 831: 818: 810: 803: 795: 791: 783: 776: 768: 764: 756: 747: 739: 735: 727: 720: 712: 705: 697: 693: 689:, p. 1713. 685: 681: 673: 669: 661: 654: 646: 642: 634: 627: 619: 612: 604: 600: 592: 585: 566: 565: 554: 550: 514: 438: 409: 378: 376: 372: 369: 364: 361: 359: 357: 356: 335: 333: 329: 326: 321: 318: 316: 314: 313: 294: 266: 209:Sayan Mountains 201: 104: 102: 98: 95: 90: 87: 85: 83: 82: 67: 66: 65: 64: 63: 62: 61: 60: 56: 24: 17: 12: 11: 5: 1471: 1469: 1461: 1460: 1455: 1450: 1445: 1440: 1435: 1425: 1424: 1420: 1419: 1394: 1372: 1342: 1320: 1299: 1277: 1252: 1224: 1201: 1199: 1196: 1194: 1193: 1181: 1179:, p. 184. 1169: 1157: 1155:, p. 325. 1140: 1138:, p. 206. 1125: 1123:, p. 120. 1113: 1111:, p. 204. 1098: 1096:, p. 209. 1086: 1084:, p. 207. 1074: 1062: 1050: 1048:, p. 177. 1038: 1036:, p. 318. 1023: 1021:, p. 185. 1011: 1009:, p. 170. 999: 987: 985:, p. 322. 975: 973:, p. 317. 960: 958:, p. 265. 945: 943:, p. 357. 930: 918: 916:, p. 171. 903: 876: 874:, p. 122. 864: 862:, p. 217. 852: 850:, p. 264. 837: 816: 814:, p. 316. 801: 799:, p. 205. 789: 787:, p. 314. 774: 772:, p. 121. 762: 760:, p. 169. 745: 743:, p. 250. 733: 731:, p. 201. 718: 716:, p. 168. 703: 701:, p. 313. 691: 679: 677:, p. 315. 667: 665:, p. 172. 652: 650:, p. 352. 640: 625: 610: 608:, p. 353. 598: 596:, p. 312. 583: 551: 549: 546: 513: 510: 494:Volcaniclastic 437: 434: 408: 405: 293: 290: 265: 262: 230:volcanic vents 226:volcanic necks 222:volcanic dykes 200: 197: 161:volcanic field 152: 151: 146: 140: 139: 137:Volcanic field 134: 128: 127: 124: 118: 117: 113: 112: 105:52.433; 98.303 80: 74: 73: 69: 68: 58: 57: 50: 49: 43: 42: 41: 40: 39: 36: 35: 31: 30: 15: 13: 10: 9: 6: 4: 3: 2: 1470: 1459: 1456: 1454: 1451: 1449: 1446: 1444: 1441: 1439: 1436: 1434: 1431: 1430: 1428: 1416: 1412: 1408: 1404: 1400: 1395: 1391: 1387: 1383: 1379: 1373: 1369: 1365: 1361: 1357: 1353: 1349: 1343: 1339: 1335: 1331: 1327: 1326:Geomorphology 1321: 1317: 1313: 1309: 1305: 1304:Geomorphology 1300: 1296: 1292: 1288: 1284: 1278: 1274: 1270: 1266: 1262: 1258: 1253: 1249: 1245: 1241: 1237: 1230: 1225: 1221: 1217: 1213: 1209: 1203: 1202: 1197: 1190: 1185: 1182: 1178: 1173: 1170: 1166: 1161: 1158: 1154: 1149: 1147: 1145: 1141: 1137: 1132: 1130: 1126: 1122: 1117: 1114: 1110: 1105: 1103: 1099: 1095: 1090: 1087: 1083: 1078: 1075: 1071: 1066: 1063: 1059: 1054: 1051: 1047: 1042: 1039: 1035: 1030: 1028: 1024: 1020: 1015: 1012: 1008: 1003: 1000: 996: 991: 988: 984: 979: 976: 972: 967: 965: 961: 957: 952: 950: 946: 942: 937: 935: 931: 927: 922: 919: 915: 910: 908: 904: 899: 895: 894: 889: 883: 881: 877: 873: 868: 865: 861: 856: 853: 849: 844: 842: 838: 835:, p. 23. 834: 829: 827: 825: 823: 821: 817: 813: 808: 806: 802: 798: 793: 790: 786: 781: 779: 775: 771: 766: 763: 759: 754: 752: 750: 746: 742: 737: 734: 730: 725: 723: 719: 715: 710: 708: 704: 700: 695: 692: 688: 683: 680: 676: 671: 668: 664: 659: 657: 653: 649: 644: 641: 638:, p. 17. 637: 632: 630: 626: 623:, p. 22. 622: 617: 615: 611: 607: 602: 599: 595: 590: 588: 584: 579: 575: 574: 569: 563: 561: 559: 557: 553: 547: 545: 543: 538: 534: 530: 529:fissure vents 525: 523: 519: 511: 509: 507: 503: 499: 495: 491: 487: 483: 479: 475: 471: 467: 463: 462:clinopyroxene 459: 455: 451: 447: 443: 435: 433: 431: 427: 423: 419: 414: 406: 404: 401: 398: 394: 393:stratovolcano 389: 383: 354: 350: 346: 340: 310: 308: 304: 292:Geomorphology 291: 289: 287: 283: 279: 275: 271: 263: 261: 259: 255: 254:Tuva Republic 251: 250:Yenisei River 247: 243: 239: 235: 231: 227: 223: 219: 215: 210: 206: 198: 196: 193: 189: 188:hyaloclastite 185: 181: 176: 174: 170: 166: 162: 158: 150: 147: 145: 144:Volcanic belt 141: 138: 135: 133: 132:Mountain type 129: 125: 123: 119: 114: 109: 81: 79: 75: 70: 47: 37: 32: 27: 22: 1406: 1402: 1381: 1377: 1351: 1347: 1329: 1325: 1307: 1303: 1286: 1282: 1264: 1260: 1239: 1235: 1211: 1207: 1184: 1172: 1160: 1116: 1089: 1077: 1065: 1053: 1041: 1014: 1002: 990: 978: 921: 891: 867: 855: 792: 765: 736: 694: 682: 670: 643: 601: 571: 526: 515: 476:-containing 450:trachybasalt 439: 410: 402: 353:Pillow lavas 311: 295: 267: 218:scoria cones 202: 177: 157:Azas Plateau 156: 155: 59:Azas Plateau 29:Azas Plateau 1409:: 201–226. 1289:: 117–133. 1267:: 249–272. 537:Pleistocene 470:plagioclase 436:Composition 377: / 334: / 242:glaciations 214:lava fields 169:Oka Plateau 165:Lake Baikal 122:Age of rock 103: / 78:Coordinates 1427:Categories 548:References 542:Jokulhlaup 512:Chronology 397:Lava lakes 362:52°23′18″N 345:lava flows 319:52°22′15″N 184:lava flows 91:98°18′11″E 88:52°25′59″N 1415:1343-9332 1368:129701943 1273:1343-9332 1242:: 16–32. 504:from the 502:xenoliths 498:Cumulates 482:nepheline 478:magnetite 413:ice sheet 365:98°23′7″E 322:98°14′8″E 278:Oligocene 199:Geography 518:Holocene 486:Hematite 474:titanium 442:basaltic 418:ice ages 246:Bii Khem 180:Pliocene 171:and the 1198:Sources 466:olivine 454:aphyric 282:Miocene 274:hotspot 234:cirques 205:Siberia 116:Geology 1413:  1366:  1271:  522:trough 506:mantle 458:augite 446:basalt 286:graben 258:Russia 244:. The 1364:S2CID 1232:(PDF) 490:magma 349:tuffs 307:fault 192:tuyas 159:is a 1411:ISSN 1269:ISSN 500:and 480:and 448:and 426:Mars 388:maar 236:and 228:and 186:and 21:Azas 1386:doi 1356:doi 1334:doi 1312:doi 1291:doi 1244:doi 1216:doi 533:mya 424:on 256:of 1429:: 1405:. 1401:. 1382:52 1380:. 1362:. 1352:58 1350:. 1330:88 1328:. 1308:88 1306:. 1287:62 1285:. 1263:. 1259:. 1240:49 1238:. 1234:. 1212:56 1210:. 1143:^ 1128:^ 1101:^ 1026:^ 963:^ 948:^ 933:^ 906:^ 896:. 890:. 879:^ 840:^ 819:^ 804:^ 777:^ 748:^ 721:^ 706:^ 655:^ 628:^ 613:^ 586:^ 576:. 570:. 555:^ 472:, 468:, 464:, 460:, 309:. 298:c. 224:, 220:, 175:. 1417:. 1407:6 1392:. 1388:: 1370:. 1358:: 1340:. 1336:: 1318:. 1314:: 1297:. 1293:: 1275:. 1265:3 1250:. 1246:: 1222:. 1218:: 900:. 580:. 23:.

Index

Azas
Azas Plateau is located in Russia
Coordinates
52°25′59″N 98°18′11″E / 52.433°N 98.303°E / 52.433; 98.303
Age of rock
Mountain type
Volcanic field
Volcanic belt
Baikal Rift Zone
volcanic field
Lake Baikal
Oka Plateau
Jom-Bolok volcanic field
Pliocene
lava flows
hyaloclastite
tuyas
Siberia
Sayan Mountains
lava fields
scoria cones
volcanic dykes
volcanic necks
volcanic vents
cirques
U-shaped valleys
glaciations
Bii Khem
Yenisei River
Tuva Republic

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