If lateral displacement occurs, these fractures are referred to as faults. In dip-slip faults, the movement along the fault is either up or down. The two masses of rock that are cut by a fault are termed the fault blocks (Figure 8.27).

13.3 Fractures, Joints, and Faults When rocks break in response to stress, the resulting break is called a fracture. If rocks on one side of the break shift relative to rocks on the other side, then the fracture is a fault.

Oct 18, 2020 · In Part 2 of geological structures, students will learn how to interpret more complex geological structures generated by folding and faulting. Name: _______________ NSID and student number: ____________

Jan 8, 2020 · 4. (12 pts) Draw fold axial traces on the map for the folds in the map area (there should be six). Indicate whether the folds are anticlines or synclines by putting the appropriate symbols on the map for each fold. Note that all the folds are plunging in the same direction.

Jan 8, 2020 · In some circumstances, beds can be completely overturned (for example in recumbent folds); if this was the case, the grey bed would be the youngest bed in figure 8.5. In the lab exercises for this chapter we will not have any exercises with overturned beds.

In ocean-continent collision zones, folding and faulting of rocks combines with volcanism to build mountains. An example of mountains built this way is the Sierra Nevada mountain range in Utah and Nevada. The orogeny that formed the Sierra Nevada range began around 140 …

It is possible for rocks to be folded so tightly that the fold limbs are nearly parallel. Folds with parallel limbs are called isoclinal folds. A recumbent fold is an isoclinal fold that has been overturned to the extent that the limbs are horizontal (Figure 13.13).

Jan 8, 2020 · Structural geology is the subfield of geology in which scientists study the relationships between geological structures (such as folds and faults) and the processes (such as plate tectonics) that have shaped Earth’s crust through time.

Strike and dip are used to describe any other planar features, including joints, faults, dykes, sills, and even the foliation planes in metamorphic rocks. Figure 13.37 shows an example of how we would depict the beds that make up an anticline on a map.

Part II - folds, faults, and unconformities: overview of how to interpret and draw more complex geological structures on geological maps and cross -sections. 8.1.1 Learning Outcomes . After completing this chapter, you should be able to: • Demonstrate …