FAQ: What Does The Geometry Of The Hawaiian-Emperor Seamount Chain Imply?

Rapid southward motion of the Hawaiian plume, followed by a sharp slowdown, causes the sharp bend in the Hawaiian-Emperor seamount chain. “These findings suggest the shape of volcanic seamount chains record motion in the deepest mantle, near the Earth’s core.

What does the Hawaiian island Emperor seamount chain indicate about past movement of the Pacific Plate?

The volcanoes in the Hawaiian Island-Emperor Seamount chain get progressively older as one heads northwestward from Hawaii. These age relationships suggest that the Pacific Plate has been steadily moving northwestward, while the underlying mantle plume has remained relatively stationary.

You might be interested:  Readers ask: What Does Acute Angle Mean In Geometry?

What is the significance of the bend in the string of seamounts?

The classical explanation is that the bend marked a swift and substantial change in the direction of motion of the Pacific Plate about 50 million years ago, but supporters of this interpretation have struggled to explain why that sudden change occurred.

What does the bend in the chain at 50 Ma indicate about the direction of the Pacific Plate movement?

A sharp bend in the chain indicates that the motion of the Pacific Plate abruptly changed about 43 million years ago, as it took a more westerly turn from its earlier northerly direction.

What might have caused a sharp bend in the island chain about 43 45 million years ago?

A sharp bend in the chain (Figure 2a) appears approximately 2,200 miles to the northwest of Hawaii. This shows that there was a change in the direction of plate movement around 43-45 million years ago. The Hawaiian Islands are built from a series of shield volcanoes, which is typical of a hot spot location.

What does the Hawaiian Island Emperor seamount chain indicate about past movement of the Pacific plate quizlet?

What does the Hawaiian Island-Emperor Seamount chain indicate about past movement of the Pacific plate? The Pacific plate changed direction of movement about 50 million years ago. The volcanoes of Hawaii are localized above a deep mantle hot spot; they are not part of the East Pacific oceanic ridge.

What is a seamount chain?

The seamount chain, containing over 80 identified undersea volcanoes, stretches about 6,200 km (3,900 mi) from the Aleutian Trench in the far northwest Pacific to the Lōʻihi Seamount, the youngest volcano in the chain, which lies about 35 kilometres (22 mi) southeast of the Island of Hawaiʻi.

You might be interested:  FAQ: When Will I Ever Use Geometry In Real Life?

Why is the Emperor seamount chain bent?

The mechanism causing the unique, sharp bend in the spectacular Hawaiian-Emperor seamount chain has been uncovered in a collaboration between the University of Sydney and Caltech. Rapid southward motion of the Hawaiian plume, followed by a sharp slowdown, causes the sharp bend in the Hawaiian-Emperor seamount chain.

How did Hawaiian Emperor Seamount chain form?

The Hawaiian Emperor seamount chain is a well-known example of a large seamount and island chain created by hot-spot volcanism. While the hot spot itself is fixed, the plate is moving. So, as the plate moved over the hot spot, the string of islands that make up the Hawaiian Island chain were formed.

What are explanations for the bend in the volcanic chain?

The cause for this bend has been heavily debated for decades. One explanation is an abrupt change in the motion of the Pacific tectonic plate, the opposite model states southward drift of the mantle plume that has sourced the chain since its beginning 80 million years ago.

How does the formation of the Hawaiian Emperor island chain help in the understanding of tectonics?

(b) How does the formation of the Hawaiian-Emperor island chain help in the understanding of tectonics? Motion of the Pacific plate allowed volcanic hot-spots to punch through the crust. It is an example of tectonics and volcanism working together to form mountains.

What is the name of the newest seamount to form in the Hawaiian island chain?

In fact, there is a new island being formed to the southeast of Hawaii as we speak. It is called the Lö’ihi Seamount and represents the next island in the Hawaiian Island chain as the Pacific Plate continues to move over the Hawaiian hotspot.

You might be interested:  Readers ask: How To Write A Conjecture In Geometry?

What caused the bend in the Hawaiian Emperor chain quizlet?

What caused the bend in the Hawaiian Island-Emperor Seamount chain, and when did the bend form? The Pacific Plate had been moving northward over the hotspot, then changed to moving northwestward about 47 million years ago. Since Volcano A is erupting, you can assume that Volcano A is currently over an oceanic hotspot.

What causes a bend in island chains?

The bend in the Hawaiian-Emperor seamount chain is a prominent feature usually attributed to a change in Pacific plate motion approx 47 Myr ago. However, global plate motion reconstructions fail to predict the bend.

How was the Hawaiian Emperor island chain formed quizlet?

The Hawaiian Islands were formed by volcanic activity. The Hawaiian Emperor seamount chain is a well-known example of a large seamount and island chain created by hot-spot volcanism. Each island or submerged seamount in the chain is successively older toward the northwest.

Leave a Reply

Your email address will not be published. Required fields are marked *