GED Science TestEarth and Space ScienceEasy
A team of geologists is investigating a region where ancient marine fossils are found at high elevations in mountainous terrain. Which geological process best explains the presence of these fossils?
- AVolcanic Activity
- BTectonic Uplift
- CSedimentation
- DErosion
Show answer & explanationAnswer & explanation
Correct answer: B. Tectonic Uplift
The presence of marine fossils at high elevations indicates that the land was once submerged under water and then subsequently raised to its current height. Tectonic uplift is the geological process responsible for this vertical movement of the Earth's crust.
Why the other options are wrong
- A. Volcanic activity creates new land, but doesn't directly explain ancient marine fossils at high elevations.
- C. Sedimentation forms layers of rock, but doesn't explain the uplift of those layers.
- D. Erosion wears down landforms, it does not create high elevations.
Tectonic Uplift
Tectonic uplift is the geological process by which Earth's crust is raised to higher elevations, often due to the movement of tectonic plates.
- Often results from convergent plate boundaries.
- Can create mountains and plateaus.
- Explains marine fossils found far from current sea level.
Memory trick: Mountains rise, oceans shrink, due to Earth's deep, slow wink.