folds and faults. tectonic plates types of differential stress 123
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Folds and Faults
Tectonic Plates
Types of Differential Stress123
Ductile DeformationRock will flow in response to stressRock will change shape during flowExample: Copper penny on train tracks
Brittle DeformationRock will break in response to stress Example: Glass objects, broken bones
Deforming MarbleShallow Crust BrittleDeeper Crust DuctileM.S. Patterson, Australian National University
AnticlineSyncline
Sinclair Dome, near Rawlings, WY
Folds
Types of Differential Stress
FaultsKanab, Utah
FaultA break in a rock along which movement has occurred.
Normal Fault:Rock above fault plane has moved down relative to rock belowReverse Fault:Rock above fault plane has moved up relative to rock below
NormalReverseStrike-Slip
Normal Fault
Rift Valley
Reverse Fault
Jurassic SandstoneDevonian LimestoneThrust Fault
Thrust Fault
San Andreas FaultCarrizo Plain, CA