What is the deepest trench in the ocean?
what is the deepest point in the southern ocean
- Southern Ocean. Southern Ocean, also called Antarctic Ocean, body of salt water covering approximately one-sixteenth of Earth’s total ocean area.
- Physiography. The Southern Ocean covers 8,479,000 square miles (21,960,000 square km), and it holds 17,226,000 cubic miles (71,800,000 cubic km) of water.
- Hydrology and biological resources. ...
What is the most famous ocean trench?
- National Geographic News: Life is Found Thriving at Ocean’s Deepest Point
- AGU Geojourneys blog: Geology Word of the Week: A is for Accretionary Wedge
- NOAA: How Does Pressure Impact Animals in the Ocean?
What is the deepest trench in the world?
- Manila Trench,
- East Luzon Trench,
- Negros Trench,
- Sulu Trench and
- Cotabato Trench.
Where are ocean trenches located?
Ocean trenches are found in every ocean basinon the planet, although the deepest ocean trenches ring the Pacific as part of the so-called “Ring of Fire” that also includes active volcanoes and earthquakezones. Ocean trenches are a result of tectonic activity, which describes the movement of the Earth’s lithosphere.
What type of plate boundary is associated with deep ocean trenches quizlet?
Located along convergent plate boundaries, these are active subduction zones. Deep sea trenches are the major topographic expression of convergent plate boundaries, surrounding most of the Pacific Rim.
Do deep ocean trenches form at divergent plate boundaries?
No, ocean trenches do not occur at divergent plate boundaries. They are formed at convergent boundaries.
What is ocean ocean convergent boundary?
Oceanic-Oceanic Convergent Boundary An oceanic-oceanic convergent boundary describes a collision between two plates composed of oceanic lithosphere. Even though this boundary involves the same type of lithosphere, one of the plates will still subduct beneath the other.
Are trenches formed at transform boundaries?
Most transform boundaries lie on the seafloor. These oceanic fracture zones form large valleys, or trenches that connect spreading oceanic ridges.
What is the deepest trench in the ocean?
The Mariana trench located off the coast of Aisa is the deepest trench in the world; it is recorded as being over 35,000 feet deep.
What is the meaning of ocean trenches?
An ocean trench is a deep indent in the surface floor of the ocean and makes up the deepest parts of the ocean.
Are ocean trenches divergent?
Ocean trenches cannot be divergent; however, there are three types of boundaries that explain the process of two tectonic plates coming together or...
How ocean trenches are formed?
Trenches are formed in subduction zones where tectonic plates collide, and the old sediment is pushed down below the new sediment, which causes a d...
Ocean Trench Definition
An ocean trench is a deep indent in the surface floor of the ocean and is the deepest part of the ocean. Trenches are located in subduction zones at or near a convergent boundary, continental crust, and/ or volcanic islands. The Mariana Trench is the deepest known trench globally, located more than 35,000 feet below sea level.
How are Trenches Formed
The earth's surface comprises tectonic plates, which are sections of the earth's crust that move and change. Ocean trenches are formed when:
Where are Trenches Found
Trenches are found on the floor of the sea; however, their common name is deep ocean trenches because they are more often found in the deepest areas of the ocean. Trenches are formed in subduction zones where tectonic plates collide. There are many known trenches that scientists continue to study. Some examples of these include:
Why is the batholith at the surface?
Because the batholith is at the surface, it implies close proximity to a transform boundary. Because the batholith is exposed at Earth's surface, it implies an effusive or quiescent eruption. Because the batholith is at the surface, it implies that the magma in it cooled quickly.
What is the atomic number of a daughter isotope?
The daughter isotope has an atomic number two less than the parent and a mass number four less. The daughter isotope has an atomic number one less than the parent and a mass number two less. The atomic number of the daughter isotope is one more than the parent; the mass numbers are the same.
What is the principle of cross-cutting relationships?
the principle of cross-cutting relationships. A fault (F) breaks three layers of sedimentary rock (S). An igneous intrusion (I1) has broken through the bottommost layer of rock. A second igneous intrusion (I2) has moved up the fault and pooled on top of the uppermost layer of rock.
What is older than a limestone layer?
a granite pebble included within a younger sandstone layer. a granite intrusion that is younger than the surrounding dolomite. a shale that is older than a limestone.
Which is the youngest event?
Deposition of the three sedimentary layers, S, is the youngest event. We know this because the fault underlies the igneous rocks. The intrusion of I1 or I2 is the youngest event. Without more information, we cannot know which igneous rock is youngest. The intrusion of I1 or I2 is the youngest event.
Which layer is older, rock layers or rock layers?
Within a sequence of rock layers formed at Earth's surface, rock layers in the middle of a sequence are older. Within a sequence of rock layers formed at Earth's surface, rock layers higher in the sequence are older. Within a sequence of rock layers formed at Earth's surface, rock layers lower in the sequence are older.
Is pyroclastic material more fluid than composite?
The pyroclastic material that comes out of shield volcanoes is more fluid than the lava that flows out of composite volcanoes. The lava that flows out of shield volcanoes is less fluid than the lava that flows out of composite volcanoes.
