V. Question (101-125) Flashcards
A right-stepping left-lateral fault system induces a _____ tectonic regime.
a) transtensional
b) transpressional
c) compressional
d) extensional
e) nota
a) transtensional
The steeper limb of the fold has a dip angle of approximately:
a. 25 degrees
b. 35 degrees
c. 45 degrees
d. 55 degrees
e. 65 degrees
a. 25 degrees
The strike of the limbs of the fold is approximately:
a. N60E
b. N80E
c. N25W
d. N15W
e. due north
c. N25W
What kind of unconformity exists between rock A and the other rocks?
a) disconformity
b) non-conformity
c) paraconformity
d) angular unconformity
Assuming there is no overturning of beds, which of the following is the proper relative ages of the rocks from oldest to youngest?
a) A-B-C-D-E
b) B-C-D-E-A
c) E-D-C-B-A
d) A-E-D-C-B
Which law of Steno could be used to say that sedimentary rocks have been tilted?
a) superposition
b) lateral continuity
c) original horizontality
d) cross-cutting relationship
d) angular unconformity
a) A-B-C-D-E
c) original horizontality
What is the strike of the contact?
a. N30W b. N60W c. due north d. N30E e. N60W
What is the dip of the contact
a. 35NE b. 35NW c. 35SE d.35SW e. due west
b. N60W
a. 35NE
_____ currents make the lithosphere move over the asthenosphere.
a. Wind b. Convection c. Electric d. Eddy e. nota
b) Convection
Lineations are kinds of joints.
a) False
b) Can’t say
c) True
d) nota
a) False
What is the apparent dip of the contact mentioned in question number 46 on an E-W cross section?
a) 31°
b) 21°
c) can not be determined
d) 40°
e) 12°
b) 21°
- The nature of strain being shown in A is:
a. Continuous homogenous
b. Continuous heterogenous
c. Discontinuous heterogenous
d. None of the above - The nature of strain being shown in B is
a. Continuous homogenous
b. Continuous heterogenous
c. Discontinuous heterogenous
d. None of the above
a. Continuous homogenous
b. Continuous heterogenous
Tension joints are parallel to the plane made by ____.
a. σ₁ and σ₂
b. σ₂ and σ₃
c. σ₁ and σ₃
d. σ₁, σ₂, and σ₃
e. aota
b. σ₂ and σ₃
If the oldest rocks are near the axis of the structure on the right, it is:
b) an anticline
If the youngest rocks are near the axis of the structure, it is:
b) a plunging syncline
If this is a syncline,
a) it plunges toward the top,
b) it plunges toward the bottom,
c) it does not plunge,
d) none of these.
a) it plunges toward the top
If this is an anticline,
a) it plunges toward the bottom,
b) it plunges toward the top,
c) it does not plunge,
d) none of these.
it plunges toward the bottom
- Metamorphism technically means a change in .
a. age b. form c. address d. functions e. nota
b. form
The __________ explains the process of deformation in rocks.
a. deformation
b. flowchart
c. deformational flowchart
d. aota
c. deformational flowchart
Shear joints are to _____ sigma 2.
a. perpendicular
b. parallel
c. diagonal
d. oblique
e. nota
b. parallel.
Shear joints are typically parallel to the intermediate principal stress (σ₂) and form as a result of shear stress acting along the plane.
The father of Plate Tectonics is ._____
a. Dr. Hannibal Lecter b. Dr. Xavier Le Pichon c. Dr. Harry Hess d. Dr. Guillermo Balce e. nota
c. Dr. Harry Hess
A vertical fold is one where the fold axis is perpendicular.
a. True b. False c. Can’t say d. Yes e. nota
b. False.
A vertical fold is one where the axial plane is vertical, but the fold axis itself is typically horizontal or inclined. The statement given is incorrect because a perpendicular fold axis would imply a different structural orientation.
__________ makes plates move towards subduction zones.
a. Slab pull b. The asthenosphere c. Ridge push d. The lithosphere e. nota
a. Slab pull
The South China Sea started to open ____ My ago. ‘
a. Can‘t be determined b. 16 c. 26 d. 32 e. 36
d. 32
What kind of fold is depicted in the following figure on
the right?
a. Symmetrical
b. Asymmetrical
c. Overturned
d. Parasite
c. Overturned
Which country has the most number of worst tsunamis ever recorded in history?
a. Indonesia
b. Alaska
c. Japan
d. Chile
e. Portugal
c. Japan
Indonesia- most destructive, 2004
Alaska-biggest wave (100-feet high wave)
Japan: 2011, 1498, 1707, 1896, 1771, 1586
“A fault is always younger than the rock it cuts through” defines the:
A) Principle of Fossil Succession;
B) Principle of Original Horizontality;
C) Principle of Cross-Cutting Relationships;
D) Principle of Lateral Continuity
C) Principle of Cross-Cutting Relationships;
“Rock salt” is a rock comprised mainly of the mineral halite, which accumulated in some areas to great thicknesses by
a. evaporation of large amounts of water, which left the salt behind.
b. deposition of salt crystals in lakes by streams that eroded them from rocks in the surrounding environment.
c. crystallization from high sodium, high chlorine magmas in desert
regions.
d. processes that geologists still have yet to figure out.
a. evaporation of large amounts of water, which left the salt behind.
