Basement Correlation Across the North Atlantic

1 The Search for Concealed Continental Basement Beneath the Margins and Coastal Basins of the North Atlantic: Methods and Motives.- 1.1 The Methods Available.- 1.2 The Initial Continental Arrangement.- 1.3 Variations in the Depth of Basement Around the North Atlantic.- 1.4 Major Basement Provinces Each Side of the North Atlantic.- 2 The Submerged Part of the Laurentian Basement: Former Western Margin of the Iapetus Ocean.- 2.1 Fragments of the Pre-Grenvillian and Grenvillian Basement in the North Atlantic Area.- 2.2 The Grenville Front.- 2.3 Southern Limit of the Laurentian Basement.- 2.4 Palaeozoic Cover of the Submerged Laurentian Basement.- 3 The Submerged Part of the Caledonian-Appalachian Mobile Belt.- 3.1 The Caledonian Front.- 3.2 Major Structures Recognized in the Caledonian-Appalachian Belt.- 3.3 Shearing Along the Caledonian Belt.- 3.4 Conclusions Concerning the Submerged Mobile Belt.- 4 The Avalon Spur: Former Southern Margin of the Iapetus Ocean and Northern Border of the Theic Ocean.- 4.1 The Pre-Avalonian Basement.- 4.2 Avalonian Structures.- 4.3 Palaeozoic Cover of the Avalon Spur with Associated Plutonisnj and Volcanism.- 4.4 Conclusions Concerning the Avalon Spur.- 5 The Submerged Part of the Ligerian (Eo-Hercynian) - Acadian Mobile Belt.- 5.1 The Ligerian (Eo-Hercynian) Suture South of the Armorican Massif.- 5.2 The Porto-Badajoz-Cordoba Transform Fault Zone.- 5.3 The "Collector Anomaly" Suture and its Continuation Across the North Atlantic.- 5.4 The Meguma Zone Problem.- 5.5 Conclusions Concerning the Ligerian (Eo-Hercynian) - Acadian Mobile Belt.- 6 The Concealed Pre-Hercynian Basement Between Africa and North America.- 6.1 Archean and Pan-African Basement.- 6.2 Pre-Hercynian Palaeozoic Basement.- 6.3 Conclusions Concerning the ConcealedPre-Hercynian Basement Between Africa and North America.- 7 The Submerged Part of the Hercynian-Alleghanian Foldbelt on the North Atlantic Margins.- 7.1 The Hercynian Orogeny in the Northern Part of the North