The Aleutian Trench (or Aleutian Trough) is an oceanic trench
along a convergent plate boundary
which runs along the southern coastline of Alaska and the Aleutian islands.
Which type of boundary do you expect to find near the Aleutian Trench 1 A 2 B 3 C 4 D?
The Aleutian Trench, which has formed along
the convergent boundary
and has been produced by the subduction of the oceanic plate, extends for 2,000 miles. At its widest point, the trench is 50 to 100 miles across.
Which type of boundary do you expect to find near the Aleutian Trench Regents?
Convergent plate boundary
. The South American Plate is the overriding plate. 6. Which plate is the subducting plate at the Aleutian Trench?
Which type of boundary do you expect to find near the San Andreas Fault?
The San Andreas Fault is
the transform plate boundary
where a thin sliver of western California, as part of the Pacific Plate, slides north-northwestward past the rest of North America.
What is a divergent boundary?
A divergent boundary occurs
when two tectonic plates move away from each other
. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries.
What type of fault is a trench?
Transform fault
, in geology and oceanography, a type of fault in which two tectonic plates slide past one another. A transform fault may occur in the portion of a fracture zone that exists between different offset spreading centres or that connects spreading centres to deep-sea trenches in subduction zones.
Why does Alaska have so many earthquakes?
Most of these earthquakes—and all major earthquakes—can be traced to
the movement of tectonic plates
. … Alaska’s largest earthquakes, exceeding magnitude 8 and even 9, occur primarily in the shallow part of the subduction zone, where the crust of the Pacific Plate sticks and slips past the overlying crust.
What other feature would you not find near the Aleutian Island Arc?
Continental crusts usually have silicic upper crust
and reflective lower crust, but these features are not found in the Aleutian arc.
What does a convergent boundary look like?
The two plates do not simply crush each other. Usually the plate with the greatest density slips on top of the plate with the lower density. Often the convergence of plates results in the
formation of volcanos
or other natural landforms such as mountains due to cracks in the the crust and land being pushed upwards.
Is Alaska a divergent boundary?
So Alaska is situated in
convergent zone
.
What landforms are created by transform boundaries?
Linear valleys, small ponds, stream beds split in half, deep trenches, and scarps and ridges
often mark the location of a transform boundary.
Do convergent boundaries cause volcanoes?
Destructive, or convergent, plate boundaries are where the tectonic plates are moving towards each other. Volcanoes form here in two settings where either oceanic plate descends below another oceanic plate or an oceanic plate descends below a continental plate.
Where are fault lines located?
These faults are commonly found in
collisions zones
, where tectonic plates push up mountain ranges such as the Himalayas and the Rocky Mountains. All faults are related to the movement of Earth’s tectonic plates. The biggest faults mark the boundary between two plates.
What are the 2 types of divergent boundaries?
At divergent boundaries, sometimes called constructive boundaries, lithospheric plates move away from each other. There are two types of divergent boundaries, categorized by where they occur:
continental rift zones and mid-ocean ridges
.
Where would a divergent boundary occur?
Divergent boundaries. Divergent boundaries occur
along spreading centers where plates are moving apart and new crust
is created by magma pushing up from the mantle.
What would be found at a divergent boundary?
Effects that are found at a divergent boundary between oceanic plates include: a submarine mountain range such as the
Mid-Atlantic Ridge
; volcanic activity in the form of fissure eruptions; shallow earthquake activity; creation of new seafloor and a widening ocean basin.
