what type of plate boundary is depicted by the smaller arrows in the center of this figure?

How did the Red Sea shown between Arabia and Africa in this figure form?

How did the Red Sea, shown between Arabia and Africa in this figure, form? Continental Rifting followed by seafloor spreading.

What makes a zig zag pattern on the seafloor?

Transform boundaries are faults that connect two areas where plates are converging or diverging. The edges of these continental boundaries usually form zig-zag patterns.

What do the trenches offshore from Japan indicate?

Terms in this set (26) Which of the following features is present on the seafloor off the Pacific Northwest? In this figure of Japan, what do the offshore trenches indicate? … sea floor spreading.

Which letter is over the youngest oceanic crust?

30 Cards in this Set

How did the Red Sea, shown between Arabia and Africa in this figure form?	Continental rifting followed by seafloor spreading
Where is subduction occurring on this map of South America?	B
On the accompanying figure, which letter is over the youngest oceanic crust?	D

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Which of the following statements are accurate about what happens when two oceanic plates converge?

Which of the following statements are accurate about what happens when two oceanic plates converge? Buoyant magma rises into the overlying plate.Temperatures increase within the subduction zone, releasing water, which induces melting.An oceanic trench is formed and sediments begin to collect.

What is an accretionary wedge and how does it form quizlet?

What is an accretionary wedge, and how does it form? An accretionary wedge is an accumulation of deformed, thrust-faulted sediments and scraps of ocean crust. This wedge is plastered against the edge of the overriding plate from the subducting plate.

What causes magnetic stripes on the seafloor such as those shown here?

When lava gets erupted at the mid-ocean ridge axis it cools and turns into hard rock. … This creates a symmetrical pattern of magnetic stripes of opposite polarity on either side of mid-ocean ridges. These patterns of stripes provide the history of seafloor spreading.

What’s the deepest part of the ocean?

the Mariana Trench

Then explain to students that the Mariana Trench is the deepest part of the ocean and the deepest location on Earth. It is 11,034 meters (36,201 feet) deep, which is almost 7 miles.

What process is shown occurring at C?

What process is shown occurring at point C and why does it occur? The process is called subduction. Deep-ocean trenches.

What happens at mid-ocean ridges as two plates diverge?

Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.

What occurs at mid-ocean ridges quizlet geology?

A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

Which type of map or diagram would best show you the shape of the land surface?

Topographic maps: Tools for planning

They show the shape of the land the mountains, valleys, and plains by means of brown contour lines (lines of equal elevation above sea level). In steep mountainous areas, contours are closely spaced; in flatter…

Where does the youngest oceanic crust occur?

mid ocean ridges

The youngest crust (shown in red) is near mid ocean ridges and spreading zones. All three rock types in the earth’s crust—igneous, sedimentary, and metamorphic—can also be recycled back to their original molten magma form. This process occurs when oceanic crust is pushed back into the mantle at subduction zones.

Is transform boundary?

A transform fault or transform boundary, sometimes called a strike-slip boundary, is a fault along a plate boundary where the motion is predominantly horizontal. … Most such faults are found in oceanic crust, where they accommodate the lateral offset between segments of divergent boundaries, forming a zigzag pattern.

What type of plate boundary occurs between the Nazca plate and the South American plate?

According to the given figures, convergent oceanic-oceanic plate boundary takes place between the South American Plate and the Nazca Plate. The Peru–Chile Trench outlines the boundary between the subducting Nazca Plate and the overriding South American Plate. The trench was created thanks to a convergent boundary.

What is the type of plate boundary that occurs between the African plate and the Arabian plate?

Explanation: A divergent boundary with the African Plate called the Red Sea Rift while in Arabian Plate is a left-lateral transform fault boundary called the Dead Sea Rift.

Which type of boundary when two tectonic plates move away from one another?

Divergent boundaries Divergent boundaries – where two plates are moving apart.

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Divergent boundaries can form within continents but will eventually open up and become ocean basins. Divergent boundaries within continents initially produce rifts, which produce rift valleys.

What is the plate boundary?

Plate boundaries are the edges where two plates meet. Most geologic activities, including volcanoes, earthquakes, and mountain building, take place at plate boundaries. … Convergent plate boundaries: the two plates move towards each other. Transform plate boundaries: the two plates slip past each other.

What is an accretionary prism quizlet?

An accretionary prism is a wedge-shaped mass of sediment scraped off a subducting plate as it slides under the overriding plate. A spreading boundary must be in the middle of the ocean basin where it is located. … Plates may consist of all ocean floor or both ocean floor and continental crust.

What is accretionary prism how does it form?

Accretionary prisms form at the leading edge of convergent plate boundaries by skimming-off sediments and rocks of the lower plate. … The rapid rate of underthrusting of the lower plate may carry rocks to great depths before they can heat up, forming a characteristic type of metamorphic rock called a blueschist.

On which boundaries would an accretionary wedge be found?

An accretionary wedge or accretionary prism forms from sediments accreted onto the non-subducting tectonic plate at a convergent plate boundary.

What does magnetic stripe pattern mean?

This represents periodic reversals in the direction of the Earth’s magnetic field.

What creates magnetic stripes on the seafloor quizlet?

Evidence from magnetic stripes is found on the seafloor. The magnetic stripes are created by the reversal of Earth’s magnetic field. … Subduction happens near trenches so the sea-floor can be melted and solidified again.

What is magnetic pole reversals?

A magnetic polarity reversal is a change of the earth’s magnetic field to the opposite polarity. … Rocks created along the oceanic spreading ridges commonly preserve this pattern of polarity reversals as they cool, and this pattern can be used to determine the rate of ocean ridge spreading.

Is Megalodon in the Mariana Trench?

According to website Exemplore: “While it may be true that Megalodon lives in the upper part of the water column over the Mariana Trench, it probably has no reason to hide in its depths. … However, scientists have dismissed this idea and state that it is extremely unlikely that the megalodon still lives.

How deep can a human dive before being crushed?

Human bone crushes at about 11159 kg per square inch. This means we’d have to dive to about 35.5 km depth before bone crushes. This is three times as deep as the deepest point in our ocean.

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Has anyone been to bottom of Mariana Trench?

On 23 January 1960, two explorers, US navy lieutenant Don Walsh and Swiss engineer Jacques Piccard, became the first people to dive 11km (seven miles) to the bottom of the Mariana Trench. As a new wave of adventurers gear up to repeat the epic journey, Don Walsh tells the BBC about their remarkable deep-sea feat.

What process is shown occurring at C and why does occur?

What process is shown occurring at C, and why does it occur? In a process taking tens of millions of years, part of the ocean floor sinks back into the mantle at deep ocean trenches.

What process is shown occurring at ocean floor and why does it occur?

As the molten material cools, it forms a strip of solid rock in the center of the ridge. Then more molten material splits apart the strip of solid rock that formed before, pushing it aside. This process, called sea-floor spreading, continually adds new material to the ocean floor.

What feature of the ocean floor is shown at a at C?

The feature on the ocean floor at C is called a(n) deep Ocean Frencia . 8. The process that continually adds new material to the ocean floor is – called Sea floor spreading. 9.

What type of plate boundary is occurring in the Mid-Atlantic Ridge?

divergent The Mid-Atlantic Ridge is a mid-ocean ridge (a divergent or constructive plate boundary) located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world.

Where do divergent boundaries occur?

mid-ocean oceanic ridges

Divergent boundaries are spreading boundaries, where new oceanic crust is created to fill in the space as the plates move apart. Most divergent boundaries are located along mid-ocean oceanic ridges (although some are on land).

What are divergent boundaries?

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.