Folds and Faults. Tectonic Plates Types of Differential Stress 123.

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Presentation transcript:

Folds and Faults

Tectonic Plates

Types of Differential Stress 123

Ductile Deformation Rock will flow in response to stress Rock will change shape during flow Example: Copper penny on train tracks

Brittle Deformation Rock will break in response to stress Example: Glass objects, broken bones

Deforming Marble Shallow Crust Brittle Deeper Crust Ductile M.S. Patterson, Australian National University

AnticlineSyncline

Sinclair Dome, near Rawlings, WY

Folds

Types of Differential Stress

Faults Kanab, Utah

Fault

A break in a rock along which movement has occurred.

Normal Fault:Rock above fault plane has moved down relative to rock below Reverse Fault:Rock above fault plane has moved up relative to rock below

Normal Reverse Strike-Slip

Normal Fault

Rift Valley

Reverse Fault

Jurassic Sandstone Devonian Limestone Thrust Fault

San Andreas Fault Carrizo Plain, CA