for second mid-term exam on

9.00 a.m. April 9 1996

The following list of words does not cover everything discussed in class but most of the important aspects and therefore is intended to be used only as a study guide.
 
 

The exam may consist of multiple choice questions, one-to two-sentence definitions, graphic interpretations, cross-sections, and slide interpretations. To the exam please bring: a calculator, a pencil, an eraser, and a protractor and sheets of paper on which to write the answers to the questions on your exam
 
 

Read Chs. 8, 9, 11, 12 - Faults, folds, cleavage, foliation, and lineation, primary structure
 
 

KEY CONCEPTS
 
 

PRIMARY STRUCTURE
 
 

trough cross-bedding

FAULTS

Andersonian faulting Mohr-Coulomb fracture diagram critical shear stress ([[sigma]]S)

 cohesive strength ([[sigma]]0) coefficient of internal friction tan [[phi]] normal stress ([[sigma]]N)

 fault separation normal faults reverse faults

 thrust faults principal stresses orientation in faults

klippe (klippen pl.)

FOLDS
 
 

anticline antiform syncline

 synform overturned fold fold limb

 inflection point axial surface interlimb angle

 crest crest line hinge

hinge line hinge zone recumbent fold

inclined fold overturned fold disharmonic fold

dip isogon parallel/concentric/Class 1B/cylindrical fold

 Class 3 fold/similar fold competency

fold classification: tightness, (gentle, open, tight, isoclinal) size, symmetry, layer thickness

ptygmatic folds synclinorium anticlinorium

flexural-slip folding flexural-flow folding similar folding

 location of joints, faults within a fold [[pi]]-diagram and [[beta]]-diagram
 
 

FOLIATION, CLEAVAGE, LINEATION
 
 

Foliation Axial surface cleavage lineation

intersection lineation boudins linear structural elements

 crenulation cleavage projection of cleavage foliation and lineation on a stereonet
 
 

FIELD TRIP REMINDERS:
 
 

Read field trip handout
 
 

Field guides will be available
 
 

Field trip departs: Thu., March 28th, 8.00 a.m. BUT come early to pack trailer. Don't forget extra warm dry clothes, wet-weather gear, and stereo-nets.
 
 

There will be showers and ice available at the camping ground and some general stores in a nearby town. However, are not planning to make official trips in the university van for supplies.

Bring some cooking equipment. The Department has bought a 2-burner Coleman stove and a large pot for boiling water. Bring some money.
 
 

We may go out for breakfast on Sunday morning.