What characteristic of a slab of oceanic lithosphere leads to the formation of deep-ocean trenches instead of shallow trenches?
What will be an ideal response?
As oceanic crust is subducting beneath another tectonic plate, it is sinking deep into the mantle. Subduction of these plates occurs at various angles, depending on how cool and dense the subducting slab is. In all cases, the sinking motion as one plate drags beneath the other creates a deep and linear "deep-ocean trench." The density of oceanic plates results in the formation of deep trenches as opposed to shallow trenches.
You might also like to view...
Canada is a good place to see geological features that were formed by erosion associated with
glaciation. Indicate whether the statement is true or false.
The Earth's core can be divided into the outer and inner components. The outer core is liquid because of the high temperature, while the inner core is solid due to the even greater pressure.
a. true b. false
What line or region best corresponds with the location of "D" climates?
A. equator, high elevations B. coastal locations, southern hemisphere C. continental interiors, northern hemisphere D. high latitudes, southern hemisphere
Formaldehyde is a toxic preservative with the following chemical formula: H2C 
O Which of the following compounds would best serve as a starting point for its production?
A. CH3CH2OH
B. H2O
C. H2C CH2
D. H3COH
E. none of the above