Lecture 22 By thought and dint of hammering, Is the good work done whereof I sing, And a jollier crowd you´ll rarely find, than the men who chip on earth´s old rind, And often wear a patched behind, By thought and dint of hammering. - Andrew C. Lawson Structural Geology Webpage for course (daytime) Webpage for course (nighttime)

Map quiz 25 (2) 24 (2) (2) 21 (6) 20 (3) 19 (5) 18 (2) 17 (2) 16 (2) (2) 12 (2) 10 8

As we learned from James Hutton: Originally strata are: horizontal layers younger beds above older ones

Fig. 18-4, pg. 420

Sedimentary rocks are deposited in Flat-lying layers subsequently FOLDED FAULTED REMOVED THROUGH EROSION

Folds anticlinesyncline

Fig A-B

anticlines and synclines Fig A Fig B

How to identify eroded folds Relative age

Kinds of mountains Fault Block Fold and Thrust Volcanic

Faults Hanging wall Foot wall

Faults Hanging wall Foot wall Hanging wall Foot wall

Normal fault Reverse fault Fig A Fig B

How to identify type of fault Relative age

Thrust faults Fig B

Kinds of mountains Fault Block Fold and Thrust Volcanic

weathering Fig. 8 B-C

Fig. 8 C-D Erosional unconformity

Folds anticlinesyncline