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)2322 (2)21 (6)20 (3)19 (5)18 (2)

17 (2)16 (2)1514 (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

anticline syncline

Fig. 18-8 A-B

anticlinesand

synclines

Fig. 17-3 A

Fig. 17-3 B

How to identify eroded foldsRelative 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. 17-9 A

Fig. 17-9 B

How to identify type of faultRelative age

Thrust faults

Fig. 17-9 B

Kinds of mountains

Fault Block

Fold and Thrust

Volcanic

weathering

Fig. 8 B-C

Fig. 8 C-D

Erosionalunconformity

Folds

anticline syncline