Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
37 Cards in this Set
- Front
- Back
|
the force
|
stress
|
|
|
the response -rock change
|
strain
|
|
|
shortening strain
|
compressive stress
|
|
|
stretching or extensional strain
|
tensional stress
|
|
|
shear strain
|
shear stress
|
|
|
Bends in Ductile rocks
-Compressive stress -beds are folded |
Plastic Stress
|
|
|
Breaks strain
-joint strains in limestone for ex: faults with movement |
Brittle Stress
|
|
|
-Convergent late boundary
-Folding strain -Reverse Fault-Strain |
Compression stress
|
|
|
-Divergent Plate Boundary
-Normal Fault Strain (rift) |
Tension stress
|
|
|
-Transform Plate Boundary
-Strike Slip Fault Strain |
Shearing Stress
|
|
|
line of intersection of dipping bed with a horizontal plane.
-Orient to the North Compass director |
Strike
|
|
|
the down dip direction
-always perpendicular to the strike line |
Dip
|
|
|
angle from the horizontal plane
|
Angle of dip
|
|
|
-S and D "T" symbol
-Degree |
Symbols on Geologic map
|
|
|
-Strains from Comression Stress
-Anticlines -Synclines -Monoclines |
Folds
|
|
|
up folds
|
Anticlines
|
|
|
down folds
|
Synclines
|
|
|
sudden release of energry stored in rocks released as seismic waves
|
Earthquakes
|
|
|
-fault motion
-tectonic forces |
Elastic Rebound Theory
|
|
|
Also associated with volcanic activity
|
Earthquakes
|
|
|
-Focus
-Epicenter -Body Waves -Surface waves |
Seismic Waves
|
|
|
can pass through solids and fluids
|
Primary (P) Waves
|
|
|
-slower
-can pass through solids only |
Seconday (S) Waves
|
|
|
-most damaging
-love waves -Rayleigh waves |
Surface Waves
|
|
|
seismograph, seismogram
|
seismometer
|
|
|
-Travel-time curves
-Depth of focus |
Determining Location
|
|
|
-Log scale 0-9
-Magnitude increase by more! |
Richter Scale
|
|
|
-P-wave shadow zone
-S-wave shadow zone -Liquid Outer core -solid inner core |
The Core (Earth's Internal Structure)
|
|
|
-Ultramafic Rock
-Lithosphere -Asthenosphere -Lower mantle |
The Mantle
|
|
|
Low Velocity Zone
|
Asthenosphere
|
|
|
Crust and uppermost mantle
|
Lithosphere
|
|
|
85% of quakes
|
Circum-Pacific Belt
|
|
|
Himalayan Belt
|
Mediterranean
|
|
|
Shallow Focus
|
Mid-oceanic ridge
|
|
|
shallow/too deep
-extend from trenches beneath continents or island arcs |
Benioff zones
|
|
|
-intensity
-location and size of earthquakes in US |
Measuring size of an earthquake
|
|
|
-I to XII (measures size of earthquake)
|
Modified Mercalli Scale
|
