Says Who?
The term for force applied over an area.
What is stress?
When the axial plane is vertical and both limbs are symmetrical.
What is an upright fold?
These are the types of plastic structures mentioned in lecture.
What are monocline, anticline, syncline, dome, and basin?
These are the types of brittle structures mentioned in lecture.
What are faults and joints?
The origin mountains.
What is orogeny or orogenesis?
The term for deformation caused by stress.
What is strain?
When the axis is not horizontal and disappears underground.
What is a plunging fold?
Their limbs dip away from the axis and have the oldest rock at center.
What are anticlines?
These involve vertical motion and have two types.
What are dip-slip faults?
Crustal thickening occurs at these tectonic plate boundaries.
What are continental-continental convergent plate boundaries?
These three types of differential stress cause deformation.
What is compressional, tensional, and shear?
When the axial plane is not vertical and the limbs dip at different angles.
What is an inclined fold?
Their limbs dip toward the axis and have the youngest rock at center.
What are synclines?
These involve horizontal motion and have two types.
What are strike-slip faults?
Batholiths contribute to mountain building and are formed from this activity.
What is igneous activity?
These types of strain are permanent.
What are plastic and brittle?
When the axial plane is horizontal.
What is a recumbent fold?
These are upward warped, have the oldest rock in core, and extend over a vast area.
What are domes?
In this, the hanging-wall side moves down, and the foot-wall side moves up.
What is a normal fault?
Accretionary wedges form at these tectonic plate boundaries.
What are oceanic-continental convergent plate boundaries?
These factors of strain --temperature, pressure, and rate -- affect folding in these manners.
What are: temperature - increase/more plastic, decrease/more brittle, pressure - increase/more plastic, decrease/more brittle, and rate - slower/more plastic, faster/more brittle?
When both limbs dip in the same direction because one limb is flipped upside down.
What is an overturned fold?
These are downward warped, have the youngest rock in core, and extend over a vast area.
What are basins?
In this, the hanging-wall side moves up, and the foot-wall side moves down.
What is a reverse fault?
Horst and Grabens, or block faults, form at these tectonic plate boundaries?
What are divergent plate boundaries?