what is structural geology?. goal: to stimulate you into thinking about research methods in...
Post on 23-Jan-2016
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What is Structural Geology?
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Goal: To stimulate you into thinking about research
methods in structural geology
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If I had to put it in one sentence….
Structural geology is the study of:• The geometry of geologic structures (such
as faults, folds, joints, intrusive bodies, ect.)
• How these structures form (their relationship to applied stress)
• Their significance to the geologic history of an area
• Their relationship to plate-tectonic motions
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Structural geology research methods?
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Observations of naturally deformed rocks: Map-scale
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Observations of naturally deformed rocks: Outcrop-scale
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Observations of deformed rocks: Micro-scale
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Advantages and disadvantages of a field-based approach?
Discussion
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Experimental Rock Deformation
Holger Stunitz in the lab at Basel University
Patterson deformation rig at
the University of Minnesota
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Schematic of a rock deformation apparatus
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Experiments are used to figure out how rocks respond to stress under different conditions
Holyoke and Tullis, 2006
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Advantages and disadvantages of an experimental approach?
Discussion
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Modeling of geologic structuresNumerical modeling Analogue modeling
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Play Johnson micro-structure model:Subgrain-rotation dynamic recrystallization
Naturally deformed sample
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Advantages and disadvantages of a modeling approach?
Discussion