1. What is the effect of faulting on outcrop?
a) Changes in the elevation of the ground
b) Omission of some strata where they are normally expected
c) Repetition of some strata in a given direction
d) Changes in elevation, omission of some strata, repetition of some strata
Explanation: Faulting is essentially a process of rupturing and displacement along the plane of rupture. Its effects may involve- changes in the elevation of the ground, omission of some strata where they are normally expected, repetition of some strata in a given direction and displacements and shifts in the continuity of the same rocks in certain regions.
2. What is the effect of strike faults to the strata?
a) Extension
b) Repetition
c) Omission
d) Repetition and omission
Explanation: Strike faults are those, which are developed parallel to the strike of the outcrops. These faults produce, besides other changes, two pronounced effects on the outcrops repetition and omission of strata.
3. When the downthrow is against direction of the bed, it leads to ___________
a) Omission
b) Repetition
c) Extension
d) Weakening
Explanation: Repetition of the strata occurs, when the downthrow is against the direction of the dip of the bed in which faulting has taken place.
4. When the downthrow is _____________ direction of the dip, it leads to omission.
a) Parallel to
b) Against
c) Inclined at certain angle
d) Doesn’t depend on downthrow
Explanation: Omission of the strata takes place in a strike fault when the downthrow is parallel to the direction of slip of the faulted bed.
5. What has to be studied at first to tell about the effects with certainty?
a) Aerial photographs
b) Globe
c) Geological maps
d) Topographical photographs
Explanation: It is only after the study of geological maps that the existence of faults at the first place and their effects on the rocks may get established with some certainty.
6. Dip fault leads to ___________
a) Horizontal shift
b) Vertical shift
c) Inclined shift
d) Outburst
Explanation: In dip faults which occur parallel to the dip of the outcrop, the most prominent effect observed after faulting and erosion of the upthrown block is a horizontal shift between the two parts of the outcrop.
7. Which fault causes offset?
a) Normal fault
b) Reverse fault
c) Oblique fault
d) Dip fault
Explanation: Oblique faults cause an offset in the sequence, which is associated with either a gap or an overlap depending upon the downthrow direction.
8. Gap or overlap depends upon ___________
a) Upthrow direction
b) Downthrow direction
c) Heave
d) Hade angle
Explanation: Oblique faults cause an offset in the sequence, which is associated with either a gap or an overlap depending upon the downthrow direction.
9. What will result in an offset with overlap?
a) Downthrow to left side
b) Upthrow to left side
c) Downthrow to right side
d) Upthrow to right side
Explanation: Oblique faults with downthrow to the left side result in an offset with an overlap.
10. What will result in an offset with gap?
a) Downthrow to left side
b) Upthrow to left side
c) Downthrow to right side
d) Upthrow to right side
Explanation: Oblique faults with downthrow to the right side result in an offset with a gap