Tina is hiking up Table Mountain. The rock’s layers are bent and folded, and she finds a shell. Which BEST describes what MOST likely happened here millions of years ago?
a. Two plates collided to form a transform plate boundary.
b. Two plates collide to form a convergent plate boundary.
c. Two plates collided to form a divergent plate boundary.
d. Two plates collide to form a subduction boundary.
b. Two plates collide to form a convergent plate boundary.
b. Two plates collide to form a convergent plate boundary.
To determine the answer to this question, we need to analyze the geological processes that could lead to the rock layers being bent and folded and the presence of a shell. Let's break down each option:
a. Two plates collided to form a transform plate boundary: A transform plate boundary is a type of boundary where tectonic plates slide past each other horizontally. This type of plate boundary does not usually result in significant folding or bending of rock layers. Therefore, this option is unlikely.
b. Two plates collide to form a convergent plate boundary: A convergent plate boundary occurs when two tectonic plates collide. This collision can cause intense geologic activity, such as folding, faulting, and mountain building. Additionally, shells or marine fossils can be uplifted to high elevations as a result of the collision. Given the information provided about the rock layers being bent, folded, and the presence of a shell, this option seems the most plausible.
c. Two plates collided to form a divergent plate boundary: A divergent plate boundary happens when two tectonic plates move away from each other. This type of boundary would not likely lead to the folding or bending of rock layers. Therefore, this option is less likely considering the given information.
d. Two plates collide to form a subduction boundary: A subduction boundary occurs when one tectonic plate is forced beneath another. This process usually results in the formation of volcanic arcs and trenches, rather than the folding or bending of rock layers. Therefore, this option is less likely based on the information provided.
Considering the given information about the bent and folded rock layers and the presence of a shell, the most likely scenario is the two plates colliding to form a convergent plate boundary. Therefore, the best answer is option b.
The convergent boundary along the Pacific coast experienced a mild earthquake at the subduction of the ocean plate and the continental plate near the continental slope. What would MOST likely occur as a result?
a. warmer weather
b. shallower ocean depths
c. turbidity current
d. methane release
c. turbidity current
3. What geological formation is created from the rising of magma, which cools and solidifies to form new ocean or continental crust?
a. valley
b. rift zone
c. tench
d. subduction zone
b. rift zone
Connexus 1-15
1.continental margin
2.asthenosphere
3.convergent boundary
4.divergent boundary
5.turbidity current
6.subduction
7.two plates collided to form a convergent…
8.Werner could not explain how or why the continents moved
9.one to six inches
10.moraines
11.theory of plate tectonics
12.rift zones
13.underwater mountain ranges
14.earthquakes
15.transform boundary