15.3: The Importance of Block Diagrams and Perspective

The Importance of Block Diagrams and Perspective

To learn many of the concepts associated with structural geology, it is useful to consider the geological perspective (Figure 15.3). Typically, geologists will use block diagrams to depict structures of the Earth. Note the different ways that you can view a block diagram. If you look at a block from along the side, you are seeing the cross-section (or profile) view. If you look at the block from directly above it, you are looking at a map-view.

As you examine the rocks and consider how they have changed, it is useful to remember how they were deposited in the first place. Take some time to review the Geologic Principles Links to an external site., especially the Principle of Original Horizontality and Principle of Superposition.

Left, a 3D or block diagram view. Middle, a map or aerial view. Right, a profile or cross-sectional view.

Figure 15.3: Geologic perspectives are important to consider when examining geologic structures. (CC-BY 4.0; Chloe Branciforte via Visible Geology Links to an external site.)