720 INDEX North American geology (continued] Nova Scotia 4:164 Ouachita Mountains 4:61-71 Bouguer gravity anomaly 4:67, 4:68/ Cambrian 4:62 gravity measurements 4:69f metasediments 4:67f Palaeozoic 4:61 regional geophysics 4:67 regional subdivisions 4:62f, 4:65 seismic reflection data 4:69-70 stratigraphy general discussion 4:63 pre-orogenic sequences 4:63, 4:64f sedimentary facies 4:64f, 4:66f syn-orogenic sequences 4:63, 4:66f tectonic processes accretionary wedges 4:70-71 diachronous collision events 4:61, 4:70 fold and thrust belts 4:62, 4:62f imbrication zones 4:65 tectonic evolution 4:61, 4:62f tectonic map 4:23f tectonic synthesis 4:70 physiographic provinces 4:49f southern Cordillera 4:48-61 accreted terranes 4:53 Archaean 4:48 Cambrian 4:50 Cenozoic 4:58, 4:60 Cretaceous 3:364, 4:52, 4:55, 4:55f crustal thickness 4:48 definition 4:48 Devonian 4:50 Eocene 4:58 faunal assemblages 4:54 Guerrero superterrane 4:54 Jurassic 4:52, 4:54 Laramide Orogeny 4:56, 4:57f Laurentia 4:48 magmatic arcs 4:53 magmatism 4:55, 4:58, 4:59f Medicine Bow orogeny 4:48-50 Mesoproterozoic 4:48 Miocene 4:58 miogeocline 4:50, 4:52 Neoproterozoic 4:48, 4:50 Nevadan orogeny 4:54 Oligocene 4:58 ophiolites 4:53-54 orogenic events 4:48, 4:50 Palaeoproterozoic 4:48 Pennsylvanian 4:50 Permian 4:50 physiographic provinces 4:48, 4:49f Precambrian basement 4:12 Precambrian craton 4:48 Proterozoic 4:48 Rodinia 4:48, 4:50 seismicity 4:60 Sevier fold-and-thrust belt 4:55f, 4:56 strike-slip fault systems 4:52 tectonic evolution 4:58, 4:59f9 4:60 tectonic map 4:5If Triassic 4:52 volcanism 4:58, 4:59f Wasatch line 4:50 tektites 5:444, 5:445?, 5:445f North American Land Mammal Age 5:479f North American Plate 4:37f, 4:39f, 4:58-60, 4:59f North Atlantic Deep Water 5:474-475 North Atlantic Volcanic Province 3:315f, 3:316t North Australia Craton 1:208, 1:209f, 1:211, I:211f9 3:128, 3:132f North Cape 3:645-646 North Carolina, United States 4:72, 4:73f, 4:75f North China Craton 5:39 North China terrane 1:234, 3:130f, 5:455, 5:457f, 5:458f North-east Georgia Rise 3:315f, 3:316t Northern Appalachians 4:81-92 glossary information 4:91 granitic rocks 3:236 Grenville orogeny 3:155, 4:83-84 ophiolites 4:82f, 4:84f9 4:89 orogenesis 4:83 Precambrian basement 4:12 tectonic evolution 2:56, 2:57/", 4:89, 4:90f tectonostratigraphical zones Avalon zone general discussion 4:81-83, 4:87f, 4:88 orogenic events 4:90f Dunnage zone description 4:84 Exploits subzone 4:82f, 4:85, 4:87f Notre Dame subzone 4:82f9 4:84f9 4:85, 4:87f tectonostratigraphic map 4:82f tectonostratigraphic relationships 4:87f Exploits subzone Popelogan-Victoria arc 4:82f, 4:87, 4:87f Tetagouche-Exploits back-arc basin 4:82f9 4:87, 4:87f Gander zone general discussion 4:81-83, 4:87 tectonostratigraphic map 4:82f tectonostratigraphic relationships 4:87f general discussion 4:81 Humber zone 4:82f9 4:83, 4:84f map 4:82f Meguma zone general discussion 4:81-83, 4:87f, 4:88 orogenic events 4:9Of Notre Dame subzone Annieopsquotch accretionary tract 4:82f9 4:85, 4:89 general discussion 4:85 tectonostratigraphic map 4:82f tectonostratigraphic relationships 4:84f tectonostratigraphic relationships 4:84f Northern Highland terrane 2:59 northern lights See auroras North German Basin 2:96f9 2:97, 2:99-100, 2:101f9 3:648-649 North New Hebrides Trench 5:430t, 5:430f North Sea 2:96f9 2:97, 2:125, 2:150, 3:648-649 North Sea Basin 2:113, 2:117, 2:118f, 2:119f92:121f92:122f North Sea Central Graben 5:44-46, 5:47, 5:48 North Victoria Land I:133f9 3:139 North-west Georgia Rise 3:315f, 3:316t North-west Hawaiian Ridge 3:315'/", 3:316t Northwind Ridge 3:315f9 3:316t Norway 2:41-44, 3:155, 3:156f9 4:187f9 4:191-192 Nostoc 2:441-442 Notelops 3:312f nothosaurs 2:484 Nothosaurus 2:506 Notofagus 1:139 Notozero domain 2:44/ Notre Dame arc 4:85, 4:87f Notre Dame subzone 4:82f9 4:84f, 4:85, 4:87f Nova Scotia 2:472, 3:147, 3:598, 4:164, 4:211,4:88-89,4:95 Novaya Zemlya 2:49, 2:50f9 2:53, 2:86, 2:87f9 4:214-215, 4:464, 4:464f Novosalenia 2:352f nuees ardentes 5:568t, 5:572, 5:574f Nullarbor Plain, Australia 5:231-233, 5:232f, 5:236 nummulitic limestones 1:24, l:24f Nuna4:14/",4:16 nunataks 4:664 Nurek dam, Tajikistan 1:537, 1:5371, l:537f Nyak terrane 4:40f, 4:42, 4:46 nyerereite 3:221t9 3:225-226 Nyiragongo volcano, Congo 3:329, 5:575 o obduction 5:315 Oberon 5:290-291, 5:291* Obik Sea 5:476-477 oblique subduction 5:315, 5:316f obradovicite (H4(K,Na)CuFe2AsO4 (MoO4)5-12H20) 3:552t Ob River 5:19t obsidian 3:267-277 artefacts occurrences 3:272 tracing methods 3:272 trade routes 3:276f transport paths 3:276f