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Where is the oldest oceanic crust found quizlet?
Oceanic crust is recycled at subduction zones before getting too old. The OLDEST band of rocks are found along the mid-ocean ridges while the YOUNGEST band of rocks are found far away from the ridge.
Which of the following is the oldest oceanic crust?
The oldest large-scale oceanic crust is in the west Pacific and north-west Atlantic — both are about up to 180-200 million years old. However, parts of the eastern Mediterranean Sea could be remnants of the much older Tethys ocean, at about 270 and up to 340 million years old.
How old is the oldest oceanic crust found to date?
about 260 million years old
The oldest oceanic crust is about 260 million years old. This sounds old but is actually very young compared to the oldest continental rocks, which are 4 billion years old.
Where are the oldest and youngest oceanic rocks found?
Also, it showed that the youngest rock was found near the mid-ocean ridge , while the oldest rock was furthest from the ridge, just off the coast of the continents. In areas such as the Pacific Ocean basin , any rocks older than 200 million years had since been consumed by the subduction zones (trenches).
Where are the oldest rocks located in the ocean crust?
Some cratons in Canada and Greenland shelter the oldest continental rocks in the world, about 4 billion years old. Other cratons in South Africa, Australia and Asia have continental rocks that are 3 billion years old. The oldest seafloor is comparatively very young, approximately 280 million years old.
Where are the youngest rocks of the ocean floor located?
The location of the youngest rocks on the seafloor shows that new rocks form in the middle of the ocean , the same location as the shallowest area of the ocean. This line of new, relatively shallow rocks is known as the mid- Atlantic Ridge.
Where is the oldest rock found on the ocean floor?
Among the oldest rocks from the Ocean/sea floor is the Dongwanzi Ophilolite, which is about 3 miles (5km) wide, about 30 miles(50km) long and 9 miles (14km) thick. It was found in May 2000 in a mountainous region of Eastern Hebei province, near the inner border of Mongolia and about 155 miles(250km) from Beijing.