Contour Lines: Rule Of 'V's & Outcrop Patterns

Geology Quiz (15 Minutes Timer)

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1. In the topographic map the steepest slope is

a. northly b. southerly c. easterly d. westerly

2. In an undulated topography, a set of unconformity inclined beds show 'V'-shaped out crop pattern with Apex pointing down stream in a valley this indicates:

a. the dip of the beds is more than the slope of the valley b. the dip of the beds is less than the slope of the valley c. the beds are vertical d. the beds are horizontal

3. If on a geological map, contour lines run parallel to a contact lines, the beds are:

a. horizontal b. vertical c. inclined d. any of the above

4. On a flat topography the outcrop width of a bed is 30 m if the true dip of the bed is 30° the actual thickness of the bed in meters is?

a. 30 b. 15 c. 45 d. 10

5. On a toposheet of 1:50,000 scale, the distance between upper and lower traces of a bed is 5cm. The actual distance on ground in kilometre is:

a. 2 b. 2.5 c. 4 d. 5

6. If the strike of the inclined bed is N15°, the dip direction can be:

a. S75°W b. N75°E c. S75°E d. S15°W

7. Younger beds will always be found in the:

a. opposite direction of the dip b. direction of dip c. direction of strike line d. inclined direction of dip and strike

8. The horizontal distance between two consecutive contours is:

a. horizontal equivalent b. horizontal interval c. plane ground d. vertical surface

9. A strike line with a given value is called,

a. Horizontal equivalent b. contour interval c. stratum contour d. contour line

10. In a toposheet, a series of V shaped contours represent:

a. ridge b. valley c. mountain d. road

11. An outcrop which older rocks surrounded by younger rocks is known as:

a. overlap b. offlap c. outlier d. inlier

12. One of the following refers to survey of India toposheet in 1:50000 scale:

a. 57 b. 57J c. 57J/12 d. 57J/12/SW

13. A topographic contour is defined as :

a. line joining the point of equal stratigraphic b. line joining the point of equal elevation c. line joining the point of equal thickness d. line joining the point of same age rock

14. An imaginary line which joint points of equal elevation is called.

a. contour line b. isothermal line c. seismal line d. isograde line

15. Maximum dip of a plane can be obtained on a line that is at ______ angle with strike of the bed.

a. 25° b. 45° c. 90° d. 65°