ASBOG 2026 EXAM REVIEW PRACTICE
QUESTIONS WITH WELL EXPLAINED
ANSWERS 100% PASS
What does it mean when you have topographic contours on a 1:24,000 scale
base map that are roughly circular and have hachures on the counters? -
CORRECT ANSWERS They represent a closed depression
You have a base map at a scale of 1:6,000 and you need to represent the
information you obtained during a field investigation of a site that is one square
mile, that includes mapping of your site as well as subsurface exploration
results. What do you need to do to the map to make it work? - CORRECT
ANSWERS Use a larger scale map because it covers a smaller area
If you have a map that is at a scale of 1:24,000 and you want to draw a cross
section with a 10 times exaggeration, what will the vertical scale be? -
CORRECT ANSWERS 1" = 200'
What is the approximate exaggerated dip if the vertical scale is exaggerated 10
times and the true dip is 30*? - CORRECT ANSWERS 80*
What do you do if you have forgotten to research the current magnetic
declination before you go to the field to investigate and map a site for a geologic
mapping project? - CORRECT ANSWERS Align your map with two planimetric
features and measure the declination with your compasss.
Location and elevation input into your GIS program comes from your GPS
system. The maps generated by this system are based on a reference datum. If
the maps were created in 1972, what do you need to do to use them with the data
output from your GPS system? - CORRECT ANSWERS Make the conversion
from NAD27 to NAD83.
For a strike and dip of N25*E, 15*N, what is the attitude of the bed in terms of the
azimuth? - CORRECT ANSWERS 205, 15
MAP NEEDED PAGE 3: What is the strike and dip of the bed? - CORRECT
ANSWERS N70*W, 38*NE
MAP NEEDED PAGE 3: What apparent dip would you expect to find along a
trench that is perpendicular to cross section A-A'? - CORRECT ANSWERS 26*
, The top of Unit A is found at location X at the ground surface and is dipping 40*
to the west. The slope is 20* to the east. Unit B is 75 feet thick, is conformable
with and below Unit A. The slope distance from the outcrop at the top of Unit A
at location X to the outcrop of the top of Unit B is 173 feet. Unit B is a unit where
you would expect a lot of lost circulation when drilling. The top of unit B is found
at a depth of 195 feet. What is the thickness of Unit A? - CORRECT ANSWERS
150 feet
MAP NEEDED PAGE 4: What geologic law is used to determine the relative ages
of the faults? - CORRECT ANSWERS Law of Cross-Cutting relationships
MAP NEEDED PAGE 4: There is a synclinal axis downslope of Unit B. Which
direction is the slope facing? Is it steep?. - CORRECT ANSWERS NW and
moderately sloping
MAP NEEDED PAGE 4: What is the youngest continuously deposited bed found
on the map? - CORRECT ANSWERS Unit D
MAP NEEDED PAGE 4: What type of feature would you expect to see on this
map if you had a plunging anticline? - CORRECT ANSWERS Closure of the
units with the plunge in the direction of closure
MAP NEEDED PAGE 4: What evidence do you have to determine weather the
eastern fault is normal, reverse or strike-slip? - CORRECT ANSWERS Normal
east side down because when projected in a cross section Unit A on the west
side is higher than its counterpart on the east side.
MAP NEEDED PAGE 4: If unit A is Permian, what is the most likely age of unit D?
- CORRECT ANSWERS Cretaceous
Which of the following survey corrections are required for the given
geophysical survey method? - CORRECT ANSWERS Gravity Survey - Bouguer
anomaly
When investigating an active fault that is relatively close to the surface to
determine the impact if would have on a planned structure, it is important to
locate it precisely and determine the recency of activity. In order to accomplish
this which of the following field methods would be the most appropriate? -
CORRECT ANSWERS seismic refraction and trenching
E-LOG ON PG-6: What is the distinguishing feature that would indicate the
presence of the fresh water-salt water interface in this coastal aquifer? -
CORRECT ANSWERS A change in the resistivity in Unit D with little
corresponding change in the SP log
QUESTIONS WITH WELL EXPLAINED
ANSWERS 100% PASS
What does it mean when you have topographic contours on a 1:24,000 scale
base map that are roughly circular and have hachures on the counters? -
CORRECT ANSWERS They represent a closed depression
You have a base map at a scale of 1:6,000 and you need to represent the
information you obtained during a field investigation of a site that is one square
mile, that includes mapping of your site as well as subsurface exploration
results. What do you need to do to the map to make it work? - CORRECT
ANSWERS Use a larger scale map because it covers a smaller area
If you have a map that is at a scale of 1:24,000 and you want to draw a cross
section with a 10 times exaggeration, what will the vertical scale be? -
CORRECT ANSWERS 1" = 200'
What is the approximate exaggerated dip if the vertical scale is exaggerated 10
times and the true dip is 30*? - CORRECT ANSWERS 80*
What do you do if you have forgotten to research the current magnetic
declination before you go to the field to investigate and map a site for a geologic
mapping project? - CORRECT ANSWERS Align your map with two planimetric
features and measure the declination with your compasss.
Location and elevation input into your GIS program comes from your GPS
system. The maps generated by this system are based on a reference datum. If
the maps were created in 1972, what do you need to do to use them with the data
output from your GPS system? - CORRECT ANSWERS Make the conversion
from NAD27 to NAD83.
For a strike and dip of N25*E, 15*N, what is the attitude of the bed in terms of the
azimuth? - CORRECT ANSWERS 205, 15
MAP NEEDED PAGE 3: What is the strike and dip of the bed? - CORRECT
ANSWERS N70*W, 38*NE
MAP NEEDED PAGE 3: What apparent dip would you expect to find along a
trench that is perpendicular to cross section A-A'? - CORRECT ANSWERS 26*
, The top of Unit A is found at location X at the ground surface and is dipping 40*
to the west. The slope is 20* to the east. Unit B is 75 feet thick, is conformable
with and below Unit A. The slope distance from the outcrop at the top of Unit A
at location X to the outcrop of the top of Unit B is 173 feet. Unit B is a unit where
you would expect a lot of lost circulation when drilling. The top of unit B is found
at a depth of 195 feet. What is the thickness of Unit A? - CORRECT ANSWERS
150 feet
MAP NEEDED PAGE 4: What geologic law is used to determine the relative ages
of the faults? - CORRECT ANSWERS Law of Cross-Cutting relationships
MAP NEEDED PAGE 4: There is a synclinal axis downslope of Unit B. Which
direction is the slope facing? Is it steep?. - CORRECT ANSWERS NW and
moderately sloping
MAP NEEDED PAGE 4: What is the youngest continuously deposited bed found
on the map? - CORRECT ANSWERS Unit D
MAP NEEDED PAGE 4: What type of feature would you expect to see on this
map if you had a plunging anticline? - CORRECT ANSWERS Closure of the
units with the plunge in the direction of closure
MAP NEEDED PAGE 4: What evidence do you have to determine weather the
eastern fault is normal, reverse or strike-slip? - CORRECT ANSWERS Normal
east side down because when projected in a cross section Unit A on the west
side is higher than its counterpart on the east side.
MAP NEEDED PAGE 4: If unit A is Permian, what is the most likely age of unit D?
- CORRECT ANSWERS Cretaceous
Which of the following survey corrections are required for the given
geophysical survey method? - CORRECT ANSWERS Gravity Survey - Bouguer
anomaly
When investigating an active fault that is relatively close to the surface to
determine the impact if would have on a planned structure, it is important to
locate it precisely and determine the recency of activity. In order to accomplish
this which of the following field methods would be the most appropriate? -
CORRECT ANSWERS seismic refraction and trenching
E-LOG ON PG-6: What is the distinguishing feature that would indicate the
presence of the fresh water-salt water interface in this coastal aquifer? -
CORRECT ANSWERS A change in the resistivity in Unit D with little
corresponding change in the SP log
