Question

For each description, choose the fault it describes. Fault types may be used more than once.




Rock layers are placed under compressional stress:

Rock layers are placed under tensional stress:

Rock layers are placed under shear stress:

Hanging wall has dropped relative to footwall:

Hanging wall has risen relative to footwall:

Occurs when tectonic forces cause rock layers to break apart and move in opposite, parallel directions: ​

Occurs at convergent boundaries where two tectonic plates collide:

Occurs at divergent boundaries where two tectonic plates separate:

the answers are
normal fault
reverse fault
strike-slip fault

Answer 1

are you sure these are the right answers

Answer 2

Here are the descriptions matched with the appropriate fault types:

- Rock layers are placed under compressional stress: **reverse fault**

- Rock layers are placed under tensional stress: **normal fault**

- Rock layers are placed under shear stress: **strike-slip fault**

- Hanging wall has dropped relative to footwall: **normal fault**

- Hanging wall has risen relative to footwall: **reverse fault**

- Occurs when tectonic forces cause rock layers to break apart and move in opposite, parallel directions: **strike-slip fault**

- Occurs at convergent boundaries where two tectonic plates collide: **reverse fault**

- Occurs at divergent boundaries where two tectonic plates separate: **normal fault**

Answer 3

Let’s review the fault types and descriptions again for accuracy:

1. **Rock layers are placed under compressional stress:**
**Answer:** **reverse fault** (In a reverse fault, the hanging wall moves up relative to the footwall due to compressional stress.)

2. **Rock layers are placed under tensional stress:**
**Answer:** **normal fault** (In a normal fault, the hanging wall moves down relative to the footwall due to tensional stress.)

3. **Rock layers are placed under shear stress:**
**Answer:** **strike-slip fault** (In a strike-slip fault, the movement of the rock occurs horizontally, parallel to the fault line, typically due to shear stress.)

4. **Hanging wall has dropped relative to footwall:**
**Answer:** **normal fault** (This is characteristic of a normal fault where the hanging wall moves down.)

5. **Hanging wall has risen relative to footwall:**
**Answer:** **reverse fault** (This occurs in a reverse fault where the hanging wall moves up.)

6. **Occurs when tectonic forces cause rock layers to break apart and move in opposite, parallel directions:**
**Answer:** **strike-slip fault** (This type of fault involves lateral movement of rocks past one another.)

7. **Occurs at convergent boundaries where two tectonic plates collide:**
**Answer:** **reverse fault** (Reverse faults are typically associated with convergent boundaries because they involve compression.)

8. **Occurs at divergent boundaries where two tectonic plates separate:**
**Answer:** **normal fault** (Normal faults are associated with divergent boundaries because they involve extension.)

So, to confirm the answers:
- **normal fault**: placed under tensional stress, hanging wall drops, occurs at divergent boundaries
- **reverse fault**: placed under compressional stress, hanging wall rises, occurs at convergent boundaries
- **strike-slip fault**: placed under shear stress, movement in opposite parallel directions

These are indeed the correct matches based on the definitions of the fault types. Thank you for your patience!