large mass of rock that rises a great distance above its base
a boundary between continental crust and oceanic crust
active continental margin
occur along plate boundaries. (Ex: west coast of South America)
passive continental margin
do not occur along plate boundaries. (Ex: east coast of South America)
stress where rock layers are being squeezed inward
tends to make rock layers thicker and shorter
stress where rock layers are being stretched
tends to make rocks thinner and longer
stress where rock layers are being pushed in two different, opposite directions
tends to distort shape of rocks, especially along the plane between the opposing forces
this is an upfold in the rock layers
this is a downfold in the rock layers
the two sides of a fold are called ________.
causes normal faults
causes reverse faults
causes strike slip faults
causes thrust faults
break in bedrock along which no apparent movement has occured
hanging wall moves down with respect to the footwall
hanging wall moves up with respect to the foot wall
reverse fault which the fault plane dips 45 degrees or less from horizontal
rocks on opposite sides of the fault plane move horizontally past each other.
the surface between the two pieces of moving crust at a fault
forms when rocks fold and crumple when two continental plates collide Ex: Himalayas
forms when flat-lying sedimentary rocks bend upward in a dome shape as a result of uplifting forces. Ex: Black Hills
plutonic dome mountain
forms when overlying crustal rocks are pushed upward by and igneous intrusion, such as a laccolith
tectonic dome mountain
result of uplifting forces that arch rock layers upward
tends to form on continental crust near a subduction boundary. Ex: Cascades
fault block mountain
forms when uplifting of a normal fault continues. Whole blocks of crust then push up into this.
tensional stress causes crust to stretch. Between normal faults, large blocks of crust have dropped. These block of crusts are called _______.
sometimes a block of crust is thrust upward between two normal faults. This block of crust is called a _______.