Asked by Lupita Sanchez on Apr 28, 2024
Verified
Which of the following sites is the least common place in which oil is trapped?
A) the flanks of a salt dome
B) the upper part of a lens of permeable rock
C) the top of an anticline
D) the bottom of a syncline
Salt Dome
A structure formed when buried salt buoyantly flows to the surface in steep, pipelike conduits.
Anticline
A type of fold in the Earth's crust characterized by an arch-like shape where the oldest rock layers are at the center of the fold, usually formed by compressional tectonic forces.
Syncline
A fold in rock layers where the youngest layers are closer to the center of the structure, typically shaped like a trough.
- Ascertain subsurface elements that denote oil and gas locations.
Verified Answer
HZ
Hannah ZjarniáApr 30, 2024
Final Answer :
D
Explanation :
Oil, being less dense than water, tends to migrate upwards through permeable rock until it is trapped by an impermeable layer. The bottom of a syncline, being a downward-curving layer of rock, is the least likely place for oil to accumulate since oil would move away from this low point towards higher structural traps like the flanks of a salt dome, the upper part of a lens of permeable rock, or the top of an anticline.
Learning Objectives
- Ascertain subsurface elements that denote oil and gas locations.