What a fault is expressed at the surface it is called?
Terms in this set (28) When a fault is expressed at the surface, it is called a. fault scarp. The name of the site where slippage begins and earthquake waves radiate outward is called the. hypocenter.
What is a fault surface along which movement takes place?
Faults are cracks in the earth's crust along which there is movement. These can be massive (the boundaries between the tectonic plates themselves) or very small. If tension builds up along a fault and then is suddenly released, the result is an earthquake.
What is a fault quizlet?
A fault is a break in a rock in which movement has taken place.
What do you call the point along a fault at which the first motion of an earthquake occurs?
The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter.
What is dip slip?
Detailed Description. A normal (dip-slip) fault is an inclined fracture where the rock mass above an inclined fault moves down.
What are the surface waves called as?
Surface waves, in this mechanical sense, are commonly known as either Love waves (L waves) or Rayleigh waves. A seismic wave is a wave that travels through the Earth, often as the result of an earthquake or explosion.
What is fault movement?
A fault is a fracture or zone of fractures between two blocks of rock. Faults allow the blocks to move relative to each other. This movement may occur rapidly, in the form of an earthquake – or may occur slowly, in the form of creep. Faults may range in length from a few millimeters to thousands of kilometers.
What is a dip slip fault quizlet?
Dip-slip fault. A fault in which movement along the inclination of a fault plan occurs. There are two kids of dip-slip faults: Normal faults and Reverse and thrust faults. Normal faults. The hanging wall moves downward making fault block mountains.
How do faults produce earthquake quizlet?
If the rocks along fault cannot overcome the energy coming from the inner part of the earth, rocks will slip and earthquakes are generated. How movements along fault generate earthquakes?
What is epicenter in earthquake?
The epicenter is the point on the earth's surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins. Epicenter & Hypocenter. (
What is focus and epicenter of an earthquake?
The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.
What are slip faults?
Block of land move horizontally A strike slip fault is a fault zone where two blocks of land move horizontally rather than vertically along a fault plane. These faults can form between two small blocks of land or crustal plates. They also sometimes develop within a continental plate.
What is reverse fault?
Definition of reverse fault : a geological fault in which the hanging wall appears to have been pushed up along the footwall.
What is a surface wave in physics?
A surface wave is a wave in which particles of the medium undergo a circular motion. Surface waves are neither longitudinal nor transverse.
Where do surface waves form?
Surface waves are typically generated when the source of the earthquake is close to the Earth's surface. As their name suggests, surface waves travel just below the surface of the ground.
What fault line means?
noun. /ˈfɔːlt laɪn/ /ˈfɔːlt laɪn/ (geology) a place where there is a long break in the rock that forms the surface of the earth and where earthquakes are more likely to happen.
What is dip-slip?
Detailed Description. A normal (dip-slip) fault is an inclined fracture where the rock mass above an inclined fault moves down.
What is the difference between a dip-slip and strike slip fault?
Faults which move along the direction of the dip plane are dip-slip faults and described as either normal or reverse (thrust), depending on their motion. Faults which move horizontally are known as strike-slip faults and are classified as either right-lateral or left-lateral.
What are faults types?
There are four types of faulting — normal, reverse, strike-slip, and oblique. A normal fault is one in which the rocks above the fault plane, or hanging wall, move down relative to the rocks below the fault plane, or footwall. A reverse fault is one in which the hanging wall moves up relative to the footwall.
What are reverse faults?
Definition of reverse fault : a geological fault in which the hanging wall appears to have been pushed up along the footwall.
What is focus and epicenter?
The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.
How do you describe the location of earthquake epicenters active volcanoes and moving plates?
The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. The majority of Earth's volcanoes and earthquakes take place along the Ring of Fire.
What is faulting in earthquake?
A fault is a fracture or zone of fractures between two blocks of rock. Faults allow the blocks to move relative to each other. This movement may occur rapidly, in the form of an earthquake – or may occur slowly, in the form of creep. Faults may range in length from a few millimeters to thousands of kilometers.
What is hypocenter in earthquake?
The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Also commonly termed the focus.
Where is a strike-slip fault?
Strike-slip faults are widespread, and many are found at the boundary between obliquely converging oceanic and continental tectonic plates.
What is a slip fault?
Strike-slip faults are vertical (or nearly vertical) fractures where the blocks have mostly moved horizontally. If the block opposite an observer looking across the fault moves to the right, the slip style is termed right lateral; if the block moves to the left, the motion is termed left lateral.
What is lateral fault?
strike-slip fault, also called transcurrent fault, wrench fault, or lateral fault, in geology, a fracture in the rocks of Earth's crust in which the rock masses slip past one another parallel to the strike, the intersection of a rock surface with the surface or another horizontal plane.
What are the surface wave called as?
Surface waves, in this mechanical sense, are commonly known as either Love waves (L waves) or Rayleigh waves. A seismic wave is a wave that travels through the Earth, often as the result of an earthquake or explosion.
What are surface waves quizlet?
surface waves. seismic waves that move rock particles in a backward, rolling motion and a sideways swaying motion. strongest waves, but slowest.
What are surface waves called?
Surface waves, in this mechanical sense, are commonly known as either Love waves (L waves) or Rayleigh waves. A seismic wave is a wave that travels through the Earth, often as the result of an earthquake or explosion.