Look at the following picture of oceanic crust around a Mid-ocean ridge.

1. From this diagram, what observation can you make about the crust farthest from the Ridge (which is in Yellow/with dotted lines)

2. What process does this prove is happening around a mid-ocean ridge?





a
The further from the ridge, the more the crust is getting uplifted; this proves that this is a transform boundary.
b
The further from the ridge, the older the crust is: this proves that sea floor spreading is occurring and new oceanic crust is being made constantly.
c
The further from the ridge, the younger the crust is getting: this proves that subduction is occurring.
d
The further from the ridge, the more the rocks point North; this proves that Geomagnetism has been slowing shifting throughout Earth's existence.

1 answer

Based on your description and the context provided regarding oceanic crust around a mid-ocean ridge:

  1. The observation that can be made about the crust farthest from the ridge (yellow with dotted lines) is that it is older compared to the crust that is closer to the ridge. As new crust is formed at the mid-ocean ridge, the older crust moves further away from the ridge as new material is added.

  2. The process this observation proves is happening around a mid-ocean ridge is:

b The further from the ridge, the older the crust is: this proves that sea floor spreading is occurring and new oceanic crust is being made constantly.

This option highlights the continuous creation of new oceanic crust at the mid-ocean ridge and the movement of older crust away from the ridge, which is a key aspect of the theory of plate tectonics.