Question

Instructions for Part C: Zoom into the various rock layers on the Gigapan image. Follow the layers from one side of the image to the other and determine what this information tells you. Part C - Describing the Formation and Deciphering its History After we make observations, we can then take that information and develop ideas for what happened in order to explain what we see and even infer what must have happened under the surface. Stresses on and within the Earth cause rocks to deform, and rocks that experience extreme stress become permanently deformed. How this deformation happens depends fundamentally on the environmental conditions that the rocks are in when stressed. In low temperature and pressure regimes, rocks tend to deform in a brittle manner (e.g., they fracture and break). In high temperature and pressure regimes, they tend to deform in a ductile manner (e.g., they fold and change shape). Take a look at the Gigapan image and consider how you can apply what you have learned about various geologic principles to figure out the history of this outcrop. Use this approach to select the correct statements about the forces and events that contributed to this outcrop taking its current form. Select all that apply. View Available Hint(s) Select all that apply. A subsurface fault displaced layers of rock that led to layers of sediment bending over the fault. Portions of the exposed layers of rock have eroded. This folding occurred under low pressure and temperature conditions. This folding was caused by humans drilling and blasting the rock to create a road. Deep rock layers were deformed by a fault that did not reach the surface, which displaced the layers above and formed a monocline.

Answer 1

The Gigapan image shows various rock layers and by observing them, we can determine the history of the outcrop. The correct statements about the forces and events that contributed to this outcrop are: a subsurface fault displaced layers of rock, portions of the exposed layers have eroded, and deep rock layers were deformed by a fault forming a monocline.

Step-by-step explanation:

The Gigapan image shows various rock layers, and by observing the layers and their characteristics, we can determine the history of the outcrop. Applying the knowledge of geologic principles, we can make some conclusions about the forces and events that contributed to the current form of the outcrop. The correct statements about this outcrop are:

• A subsurface fault displaces layers of rock, leading to layers of sediment bending over the fault.
• Portions of the exposed rock layers have eroded.
• Deep rock layers were deformed by a fault that did not reach the surface, displacing the layers above and forming a monocline.

Answer 2

A subsurface fault displaced layers of rock that led to layers of sediment bending over the fault. This could be plausible if there are signs of faulting and layer displacement.

Portions of the exposed layers of rock have eroded. Erosion is a common geological process, and it's important to consider how it may have shaped the current outcrop.

This folding occurred under low pressure and temperature conditions. This is a reasonable inference if there are signs of brittle deformation. Deep rock layers were deformed by a fault that did not reach the surface, which displaced the layers above and formed a monocline. This is similar to the first statement and could be plausible if there are signs of faulting and monocline formation.