Podcast
Questions and Answers
What is the definition of stress according to the text?
What is the definition of stress according to the text?
- A force acting over a given area (correct)
- A tensor that describes the density of forces acting on all surfaces passing through a given point
- A measure of the deformation of a material
- The resistance of a material to an applied force
What are the two main types of geological activity that occur because of plate tectonics?
What are the two main types of geological activity that occur because of plate tectonics?
- Volcanoes and earthquakes
- Erosion and sedimentation
- Uplift and subsidence
- Mountain building and earthquakes (correct)
Which type of stress is most common at convergent plate boundaries?
Which type of stress is most common at convergent plate boundaries?
- Shear stress
- Confining stress
- Tension stress
- Compression stress (correct)
What is the primary purpose of measuring, estimating or constraining stress magnitudes at depth in oil, gas and geothermal reservoirs?
What is the primary purpose of measuring, estimating or constraining stress magnitudes at depth in oil, gas and geothermal reservoirs?
What is the relationship between plate tectonics and the four types of stresses acting on materials?
What is the relationship between plate tectonics and the four types of stresses acting on materials?
What is the main purpose of describing stresses acting on a homogeneous, isotropic body at depth as a second-rank tensor?
What is the main purpose of describing stresses acting on a homogeneous, isotropic body at depth as a second-rank tensor?
What type of fold is characterized by the oldest rocks at the center and the youngest at the outside?
What type of fold is characterized by the oldest rocks at the center and the youngest at the outside?
In which type of fault do rocks crumple into folds and deform plastically under compressive stresses?
In which type of fault do rocks crumple into folds and deform plastically under compressive stresses?
What is the relative distance that rocks move along a fault called?
What is the relative distance that rocks move along a fault called?
What type of fold results in rocks arching upward and dipping away from the center of the fold?
What type of fold results in rocks arching upward and dipping away from the center of the fold?
Which type of fault has blocks of rock on one or both sides moving due to a fracture?
Which type of fault has blocks of rock on one or both sides moving due to a fracture?
What type of structure is characterized by rocks bending downward in a circular manner?
What type of structure is characterized by rocks bending downward in a circular manner?
What is the most common type of stress at convergent plate boundaries?
What is the most common type of stress at convergent plate boundaries?
What happens to rocks under tension?
What happens to rocks under tension?
What is the major type of stress at divergent plate boundaries?
What is the major type of stress at divergent plate boundaries?
What happens when forces are parallel but moving in opposite directions?
What happens when forces are parallel but moving in opposite directions?
What is the most common type of stress at transform plate boundaries?
What is the most common type of stress at transform plate boundaries?
What is the relationship between stress and strain?
What is the relationship between stress and strain?
What type of rocks are considered 'incompetent' in the text?
What type of rocks are considered 'incompetent' in the text?
What feature on a map or cross-section indicates a 'ramp' portion of a fault?
What feature on a map or cross-section indicates a 'ramp' portion of a fault?
What is the purpose of 'section balancing' according to the text?
What is the purpose of 'section balancing' according to the text?
What feature on a map or cross-section indicates a 'flat' portion of a fault?
What feature on a map or cross-section indicates a 'flat' portion of a fault?
What is the meaning of the term 'décollement' according to the text?
What is the meaning of the term 'décollement' according to the text?
What is the Humber Arm Allochthon composed of according to the text?
What is the Humber Arm Allochthon composed of according to the text?
What type of deformation occurs when a rock returns to its original shape after the stress is removed?
What type of deformation occurs when a rock returns to its original shape after the stress is removed?
Which of the following factors does NOT affect a rock's response to stress?
Which of the following factors does NOT affect a rock's response to stress?
Where in the Earth's crust are rocks more likely to undergo plastic deformation?
Where in the Earth's crust are rocks more likely to undergo plastic deformation?
What is the typical orientation of sedimentary rock layers when they are first formed?
What is the typical orientation of sedimentary rock layers when they are first formed?
What type of deformation occurs when a rock under stress breaks?
What type of deformation occurs when a rock under stress breaks?
What is the significance of sedimentary rock layers that are not horizontal?
What is the significance of sedimentary rock layers that are not horizontal?
