Wed. Jun 19th, 2024

Denudation Chronology and Erosional Surfaces

  1. What is the meaning of denudation chronology?

    Options:
    1. A method to date rocks in a given region
    2. A reconstruction of the historical development of the landscape
    3. A study of the evolution of flora and fauna in a region
    4. A method to measure soil erosion in a region

    Option: B

  2. Which principles are involved in the historical approach of landform study?

    Options:
    1. Principles of uniformitarianism and palimpsest topography
    2. Principles of gravity and tectonics
    3. Principles of ecology and hydrology
    4. Principles of geodesy and seismology

    Option: A

  3. What is the goal of the denudation chronology approach?

    Options:
    1. To identify and interpret planation surfaces
    2. To measure soil erosion in a region
    3. To study the evolution of flora and fauna in a region
    4. To study the tectonic activity in a region

    Option: A

  4. What does the concept of palimpsest topography mean?

    Options:
    1. The study of the history of vegetation in a region
    2. A surface that bears the imprints of geomorphological processes during past geological periods
    3. The study of the formation of mountains and valleys
    4. The process of soil erosion in a region

    Option: A

  5. What is the main objective of the denudation chronology method?

    Options:
    1. To study the evolution of flora and fauna in a region
    2. To measure the tectonic activity in a region
    3. To identify and interpret planation surfaces developed in past cycles and subcycles of erosion
    4. To study the history of human settlements in a region

    Option: C

  6. What is the denudation chronology approach?

    Options:
    1. A deductive approach to understanding geomorphic history
    2. A speculative approach to understanding geomorphic history
    3. A method for dating erosion surfaces
    4. A method for understanding the original forms of erosion surfaces

    Option: A

  7. What is one weakness of the denudation chronology approach?

    Options:
    1. It relies on too much evidence
    2. It is too speculative
    3. It is too focused on the original forms of erosion surfaces
    4. It relies on limited information and evidence

    Option: D

  8. What are erosion surfaces?

    Options:
    1. Elevated areas of land that have been heavily eroded
    2. Flat or near-flat surfaces formed by cycles of erosion
    3. Areas of land that have been heavily impacted by earthquakes
    4. Undulating ground surfaces caused by volcanic activity

    Option: B

  9. What is the significance of erosion surfaces?

    Options:
    1. They provide clues for the reconstruction of denudation chronology
    2. They are important for understanding volcanic activity
    3. They are useful for dating geological formations
    4. They are critical for understanding the impact of earthquakes

    Option: A

  10. Which of the following is not an erosion surface?

    Options:
    1. Valley side benches
    2. River terraces
    3. Raised beaches
    4. Structural benches

    Option: D

  11. What is the difference between erosion surfaces and structural benches?

    Options:
    1. Erosion surfaces are formed due to the removal of weak strata by denudational processes, while structural benches are structurally controlle
    2. Erosion surfaces cut across geological formations and structures, while structural benches are parallel to the exposed underlying strata and their dip angle.
    3. Erosion surfaces are formed due to erosion of different rock types and different geological structures, while structural benches are formed due to removal of overlying weak strata by denudational processes.
    4. Erosion surfaces are found at higher elevations, while structural benches are found at lower elevations.

    Option: B

  12. Why is it difficult to find erosion surfaces close to present sea-level?

    Options:
    1. Because most erosion surfaces have been largely affected by tectonic movements such as uplifting, subsidence, and upwarping.
    2. Because sea-level is not stable and has experienced several phases of positive and negative changes due to climatic changes and tectonic movement.
    3. Becausee most erosion surfaces have been up-lifted to higher elevations.
    4. Because erosion surfaces closer to sea-level have not yet experienced subsidence.

    Option: A

  13. Which of the following is true about sea-level?

    Options:
    1. Sea-level has remained constant throughout the geological and geomorphic history of the earth.
    2. Sea-level is not stable and has experienced several phases of positive and negative changes due to climatic changes and tectonic movement.
    3. Sea-level has only experienced positive changes due to glacial and interglacial ice ages.
    4. Sea-level has only experienced negative changes due to upliftment and subsidence of coastal land and sea floor.

    Option: B

  14. What is the basis for determining whether surfaces are structural or erosional?

    Options:
    1. Aerial photography
    2. Ground checks and field observation
    3. Satellite imagery
    4. Topographic maps

    Option: B

  15. What does the altimetric frequency histogram and curve reveal about the Belan basin?

    Options:
    1. Two frequency maximas
    2. Four frequency maximas
    3. Six frequency maximas
    4. Ten frequency maximas

    Option: B

  16. At what height is the first frequency maximum observed in the Belan basin?

    Options:
    1. 800 feet (240 m)
    2. 500 feet (150 m)
    3. 1000-1200 feet (305 m – 366 m)
    4. 1350-1400 feet (427 m)

    Option: C

  17. What is observed at the height of 1350-1400 ft in the Belan basin?

    Options:
    1. A weak frequency peak
    2. A strong frequency peak
    3. No frequency peak
    4. A structural surface

    Option: A

  18. What are the surfaces in the Belan basin, from higher to lower elevations?

    Options:
    1. Tectonic, structural, erosion
    2. Erosion, tectonic, structural
    3. Structural, erosion, tectonic
    4. Tectonic, erosion, structural

    Option: C

  19. What is the height of the Panna surface?

    Options:
    1. 427 m
    2. 1000 ft
    3. 305 m
    4. 800 ft

    Option: B

  20. What is the height of the Rewa surface?

    Options:
    1. 427 m
    2. 1000 ft
    3. 305 m
    4. 800 ft

    Option: D