Outline Normal Fault Systems and...
Transcript of Outline Normal Fault Systems and...
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OutlineOutline Normal Fault Systems and KinematicsNormal Fault Systems and Kinematics
• Planar Faults and Block Rotation
• Detachment Faulting
• Fault Linkage
• Kinematics of Normal Faulting
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Development of Continental Rift into Ocean Basin
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East African Rift SegmentationEast African Rift Segmentation
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Basin and Range Normal Fault BlocksBasin and Range Normal Fault Blocks
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Rio Grande RiftRio Grande RiftSegmentationSegmentation
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Death ValleyDeath ValleyFault Zone Fault Zone
and and StepoverStepover
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Closeup Closeup ofof StepoverStepover
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Planar Normal Faults and Block RotationPlanar Normal Faults and Block Rotation
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Planar Normal Faults and Block RotationPlanar Normal Faults and Block Rotation
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Domino Block ExampleDomino Block Example
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Domino Block ExampleDomino Block Example
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Detachment FaultDetachment Fault
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Detachment FaultDetachment Fault
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Detachment FaultDetachment Fault
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SoftSoft--Linked SystemsLinked Systems
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Kinematics of Normal FaultingKinematics of Normal Faulting
• Domino, Bookshelf-Style Normal Faulting
• Listric Normal Faulting with Reverse Drag
• Imbricate Listric Normal Faulting
• Inversion
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DominoDomino--Style Normal FaultingStyle Normal Faulting
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DominoDomino--Style Normal Faulting (bookshelf faulting)Style Normal Faulting (bookshelf faulting)
Occurs above DetachmentsOccurs above Detachments
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ListricListric--Planar Normal Fault SystemPlanar Normal Fault System
???
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ListricListric--Planar Normal Fault SystemPlanar Normal Fault System
L
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Listric Listric Normal Faulting with Reverse DragNormal Faulting with Reverse Drag
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Listric Listric Normal Faulting with RolloverNormal Faulting with Rollover
Occurs due to space problem with curved detachmentOccurs due to space problem with curved detachment
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ImbricateImbricate Listric Listric Normal FaultingNormal Faulting
Synthetic faults also accommodate collapse of HW blockSynthetic faults also accommodate collapse of HW block
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Imbricate Imbricate Listric Listric Normal FaultingNormal Faulting
““Meatslices Meatslices common in large displacement systemscommon in large displacement systems
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InversionInversion
• Normal faulting
• Syn-tectonic deposition of B
• Post-tectonic deposition of C
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InversionInversion
• Normal faulting
• Syn-tectonic deposition of B
• Post-tectonic deposition of C
• Thrust faulting
• Deformation of B and folding of C
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ReferencesReferences
Slides 1, 20, 21Slides 1, 20, 21TwissTwiss, R. J. and E. M., R. J. and E. M. MooresMoores, Structural Geology, W. H. Freeman & Co., New York, 532 p., , Structural Geology, W. H. Freeman & Co., New York, 532 p., 1992.1992.
Slides 3Slides 3--66http://earth.http://earth.leedsleeds.ac..ac.ukuk/faults/normal/domino./faults/normal/domino.htmhtm
Slides 7Slides 7--99http://earth.http://earth.leedsleeds.ac..ac.ukuk/faults/normal/detachment1./faults/normal/detachment1.htmhtm
Slide 10Slide 10http://earth.leeds.ac.uk/faults/soft/softnormal.http://earth.leeds.ac.uk/faults/soft/softnormal.htmhtm
Slides 12Slides 12--1919Davis. G. H. and S. J. Reynolds, Structural Geology of Rocks andDavis. G. H. and S. J. Reynolds, Structural Geology of Rocks and Regions, 2nd ed., John Regions, 2nd ed., John Wiley & Sons, New York, 776 p., 1996.Wiley & Sons, New York, 776 p., 1996.