Question

Which of the following is a landform created as a result of a transform boundary?

• A. Fold Mountains
• B. Linear Fault Valleys
• C. Ocean Trenches
• D. Volcanic Islands

Answer 1

Answer:

B. Linear Fault Valleys

Transform Boundaries and Resulting Landforms

Transform boundaries are one of the three main types of tectonic plate boundaries, characterized by plates sliding past each other horizontally.

• Mechanism: Unlike convergent boundaries (where plates collide) or divergent boundaries (where plates move apart), transform boundaries involve shear stress. This sliding motion results in significant friction and the buildup of strain energy.
• Earthquakes: Transform boundaries are the sites of frequent and often powerful earthquakes as the stored strain is released. The San Andreas Fault in California is a classic example of a transform boundary known for its seismic activity.
• Landform Creation: The primary landform directly created by the movement along a transform boundary is a linear fault valley, also known as a fault trough or graben (in specific contexts of subsidence along a fault).

Linear Fault Valleys

• Formation: These valleys form in the linear zone where the two tectonic plates are sliding past each other. The relentless grinding and fracturing of rock along the fault line can create a depressed or elongated valley that follows the fault trace.
• Characteristics: Linear fault valleys are typically narrow and elongated, stretching for considerable distances, often marking the visible trace of the transform fault on the Earth's surface.
• Distinction from Other Landforms: It is important to distinguish these from landforms created by other boundary types:
  • Divergent Boundaries: Create features like rift valleys and mid-ocean ridges.
  • Convergent Boundaries: Create features such as mountain ranges (e.g., Himalayas), volcanic arcs, and ocean trenches.

Relevance for Exams

Understanding the different types of plate boundaries and the specific landforms they create is crucial for geography and earth science exams. Pay attention to the characteristic landforms associated with each boundary type, as questions often test this knowledge.