What is a lobate scarp?
Lobate scarps are long, curvilinear structures found on some planetary bodies. They are interpreted to be tectonic in nature, the result of a thrust fault developed in rocks that are otherwise structurally sound.
Does the moon have lobate scarps?
Although the lobate scarps indicate contraction, the Moon has not contracted by much in the recent past. The total radial contraction or decrease in the Moon’s radius is estimated to be only about 100 meters. The age of lobate scarps is also being investigated.
Where are the lobate scarps?
Lobate scarps are generally found in the lunar highlands and are the most common tectonic landform on the far side (e.g., Watters et al.
What are lobate scarps on mercury?
The surface of Mercury has landforms that indicate its crust may have contracted. They are long, sinuous cliffs called lobate scarps. These scarps appear to be the surface expression of thrust faults, where the crust is broken along an inclined plane and pushed upward.
What is scarp mean?
Definition of scarp 1 : the inner side of a ditch below the parapet of a fortification. 2a : a line of cliffs produced by faulting or erosion — see fault illustration. b : a low steep slope along a beach caused by wave erosion.
What caused the weird terrain on Mercury?
An informal name for hilly and lineated terrain found on Mercury and the Moon. On Mercury, weird terrain is found on the opposite side of the planet to the large Caloris Basin, and is thought to have formed when the seismic waves from the Caloris impact converged, a process known as seismic focusing.
How old are lunar lobate scarps 1 seismic resetting of crater size frequency distributions?
The age estimates of the scarps range from 60 ± 30 Ma to 680 ± 250 Ma with uncertainties of + 2× to −4×, indicating that lunar scarps are Copernican in age (Binder and Gunga, 1985).
Why is Mercury so heavily cratered?
Impact craters dominate the surfaces of Mercury and the Earth’s Moon. Both bodies lack liquid water on their surfaces that would erode impact craters over time. They also lack an atmosphere which, on planets like the Earth and Venus, could disintegrate meteoroids before they impact the surface.
What causes scarp?
Active scarps are usually formed by tectonic displacement, e.g. when an earthquake changes the elevation of the ground and can be caused by any type of fault, including strike-slip faults, whose motion is primarily horizontal.
What does scrap mean in slang?
fight
A final meaning of the noun scrap is “fight,” as in “I got into a scrap with my brother.” Scrap also has a verb form that means “discard.” When you scrap your plan to move to the Bahamas, that means you’re abandoning the plan.
