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River Rocks would be made out of whatever type of rocks are around the river. Although, I would assume not all types of rocks tend to grind into round balls.

Granite is very tough, and is a very common type of river rock.

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15y ago

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Are the hawaiian islands formed at a subduction boundary?

No, the Hawaiian Islands are not formed at a subduction boundary. They are formed by a hotspot in the Earth's mantle, where magma rises to the surface and creates volcanic islands as the tectonic plate moves over the hotspot.


How are hawaiin islands formed?

The Hawaiian Islands were formed by volcanic activity, as the Pacific tectonic plate moved over a hot spot in Earth's mantle. A chain of volcanoes formed as the plate moved northwestward, with new islands being formed over millions of years. The islands continue to be shaped by volcanic activity, with the Big Island of Hawaii being home to active volcanoes like Kilauea.


What are three coastal landforms formed by deposition?

Beaches: sandy or pebbly areas along the coastline composed of sediments deposited by waves and currents. Barrier islands: long, narrow sandy islands parallel to the coastline formed by the deposition of sediments carried by waves and currents. Deltas: triangular-shaped deposits of sediment at the mouth of a river where the river slows down and deposits its load of sediments into the sea.


What type of volcanoes formed the Hawaiian islands?

The Hawaiian islands were formed by shield volcanoes, which are characterized by long, gentle sloping sides formed by low-viscosity lava flows. These volcanoes are created by the movement of the Pacific Plate over a hot spot in the Earth's mantle, resulting in a chain of volcanic islands.


What are examples of islands that were formed by mantle plumes?

Examples of islands formed by mantle plumes include Hawaii, Iceland, and the Galapagos Islands. These islands were created by the upwelling of hot material from deep within the Earth, which led to the formation of volcanic chains.

Related Questions

How does silt changes the river?

Over time the silt changes the shape of the river as it is formed into islands, sandbars, and river bends


How are riverine island formed?

Riverine islands are formed when a river has a braided channel and by the deposition of sand and silt carried by the river.


What is the longest river in the Solomon islands?

Waikato River is the longest river in solomon islands


How was the cayman islands formed?

the Cayman Islands were formed from an eruption of an underwater volcano.


How did Moraine in Dayton Ohio get its name?

The area that Moraine,Ohio is marked as was formed by the glacier. The land is of gravel(moraine) left by the North American glacier that formed the Great Lakes, Ohio River and Mississippi River along with East Coast Islands.


The thousand islands are located in what river?

The Thousand Islands are located in the St. Lawrence River.


How are some islands in the ocean formed?

The Hawaiian Islands were formed and are still being formed right now by volcanic activity.


What river is formed by the nile river?

The Nile river is formed by the Blue river and the White river. ~ You're Welcome


How were Hawaiian islands were formed?

Volcanoes formed the Hawaiian Islands over millions and millions of years.


How a river was formed?

A river raft was formed by the water eroding the river time after time


How was the Congo river formed?

the congo basin was formed by tectonic plates.


Are the hawaiian islands formed at a subduction boundary?

No, the Hawaiian Islands are not formed at a subduction boundary. They are formed by a hotspot in the Earth's mantle, where magma rises to the surface and creates volcanic islands as the tectonic plate moves over the hotspot.