ASBOG Geologic Map and Cross-Section Interpretation Exam with Questions and Correct Answers Latest Updated

ASBOG Geologic Map and Cross-
Section Interpretation Exam with
Questions and Correct Answers Latest
2026-2027 GRADED A+


Allochthon - CORRECT ANSWERS A fault block or rock mass moved from its
place of origin

Autochthon - CORRECT ANSWERS A rock mass underlying a thrust fault that
has not moved from its location of origin

Blind Thrust - CORRECT ANSWERS A thrust fault that dies out in the
subsurface as it loses slip and stratigraphic separation

Detachment Fault - CORRECT ANSWERS A low-angle normal fault associated
with regional extension

Dip-slip fault - CORRECT ANSWERS A fault in which the movement is parallel to
the dip of the fault plane, such as a normal, reverse, or listric fault

Fenster - CORRECT ANSWERS A "window" into rocks underlying a thrust fault

Footwall block - CORRECT ANSWERS The block that underlies a non-vertical
fault

Growth fault - CORRECT ANSWERS A fault that forms contemporaneously with
deposition in sedimentary rock. The throw increases with depth and the
sedimentary units on the downthrown side are thicker than the corresponding
units on the upthrown side

Hanging-wall Block - CORRECT ANSWERS The block that overlies a non-
vertical fault

Heave - CORRECT ANSWERS The amount of horizontal displacement on a fault

Klippe - CORRECT ANSWERS An outlier of a thrust sheet completely
surrounded by the exposed footwall

Key beds - CORRECT ANSWERS A well-defines, easily identified strata that is
distinctive enough to be useful in correlation in mapping