Ocean basins 3

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Changes in Norwegian-Greenland SeaspreadingBerndt et al., 2001 34
Evolution of the San AndreasTransform FaultObservations:1. San Andreas Fault has increased in lengthas two triple junctions have moved apart.2. Southwestern margin of the NorthAmerican Plate has progressively changedfrom a trench boundary (with NorthAmerica the continental and therefor overridingplate) into transform fault plateboundary.3. Change from trench to transform hasproduced progressive extinguishing ofvolcanic arcs (Cascades and MiddleAmerica arcs).The Solid Earth, Fowler 35
Page 1 and 2: 3. Ocean basinsTheir structure and
Page 3 and 4: Continental and oceanic lithosphere
Page 5 and 6: The most common plate boundaries•
Page 7 and 8: Types of plate boundaries7
Page 10 and 11: Magnetic anomaliesVolcano World web
Page 12 and 13: Plate motions from magnetic anomali
Page 14 and 15: Geometry of motion on a sphere; At
Page 16 and 17: Motions and earthquakesat plate bou
Page 19 and 20: Hot spot model• Age and geometry
Page 21 and 22: Hot spot distributionThis Dynamic E
Page 23 and 24: Direct measurements - exampleFowler
Page 25: Absolute plate motionsfrom very lon
Page 29 and 30: Plate tectonics II• Changes in pl
Page 31 and 32: Some obvious signs for past changes
Page 33: Change in the Norwegian-Greenland S
Page 38: Present day subduction of a spreadi
Page 41 and 42: The age of the oceansMuller et al.,
Page 43 and 44: Pacific Ocean• Complicated to rec
Page 45 and 46: Magnetic anomaliesVolcano World web
Page 47 and 48: Magnetic anomalies- Eastern Pacific
Page 50 and 51: The Wilson Cycle• Describes the l
Page 52 and 53: Plume-relateduplift• depends on:-
Page 54 and 55: Passive rifting54
Page 56 and 57: Active rifting56
Page 58 and 59: Stages of ocean evolution1 - Embryo
Page 60 and 61: For next timeLook at animations at:
Page 62 and 63: The birth of an ocean1. The process
Page 64 and 65: Wilson Cycle Stage B - continentalr
Page 66 and 67: Northern Red Sea• Failed rift in
Page 68 and 69: A young ocean - The Red Sea• Wils
Page 70 and 71: Red Sea - crustal architecture• E
Page 72: An old ocean - the Mediterranean Se

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