geo mountain building

the study of earthquakes, an instrument to measure earthquakes and the readout of an earthquake

• compressional stress=convergent
• tensional stress=divergent
• shear stress=transform

• normal =hanging wall is below footwall
• reverse=hanging wall is above footwall
• thrust=low angle reverse faults
• strike-slip=transform boundaries blocks slide by each other

• monocline=single flex or bend
• anticline=layers dip away from axis, oldest in the mid
• syncline=layers dip toward axis, youngest in the mid
• overturned fold=layers dip past 90degrees

the earths crust floating in the mantle