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# Where would I find the oldest rock on the ocean floor?

Updated: 9/26/2023

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Q: Where would I find the oldest rock on the ocean floor?
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### Where would you expect to find the oldest on the ocean floor?

Somewhere at the bottom of the Marianas Trench you would find the oldest rock of the oceanic crust. Somewhere else, however, there are older rocks on the ocean floor--those deposited by icebergs that have broken off of glaciers. Those erratic rocks could be much older than the oldest oceanic crust.

### Where would you expect to find oldest rock on the ocean floor?

Somewhere at the bottom of the Marianas Trench you would find the oldest rock of the oceanic crust. Somewhere else, however, there are older rocks on the ocean floor--those deposited by icebergs that have broken off of glaciers. Those erratic rocks could be much older than the oldest oceanic crust.

### Where would you expect to find the oldest rock on the oldest floor?

Somewhere at the bottom of the Marianas Trench you would find the oldest rock of the oceanic crust. Somewhere else, however, there are older rocks on the ocean floor--those deposited by icebergs that have broken off of glaciers. Those erratic rocks could be much older than the oldest oceanic crust.

### Where would you find an estuary?

=on the ocean floor=

### What happens when the plate motions compresses part the crust?

where do you expect to find the oldest rock on the ocean floor

### What feature on the ocean floor would you most likely find the oldest seafloor?

in a subduction trench, because of Harry Hess' theory of sea floor spreading. Meaning that the rock is formed new at the mid-ocean ridge, and moved out towards the coasts into a subduction zone years and years later.

### Where can you find the youngest rocks on the ocean floor?

you can find the youngest rocks on the top of the ocean floor.

the bottom

### What regions would you expect to find the largest amounts of dissolved oxygen in the ocean floor?

in the deep oceon floor

### Where would you expect to find the oldest rock on the sea floor?

At the greatest distance from a mid oceanic spreading centre.

sand,rocks

### What kinds of rocks are in the ocean?

The ocean floor is mainly basalt. Closer to the poles you would occassionally find a glacial erratic, dropped from a melting iceberg.