Studying geography reveals human history.
Answer:
They are youngest close to the ridges,
Explanation:
At the ocean ridges, there is divergence at their margins.
Therefore, new materials upwell from the mantle below to the surface.
- The basaltic materials cools and solidifies at the margin.
- This action forces the old lithosphere backwards as the plate pulls away.
- At the margin of the ridge, the rocks are younger.
- Away from the margin, the crust begins to grow older.
So, at the margin the age of the rocks are more younger than those away from the margin.
Answer:
Divergent boundaries such as the mid-oceanic ridge system.
Explanation:
Divergent boundaries occur when plate boundaries pull away from each other. Molten rock or magma rise from the gap between the two plates, rising up to the sea floor where it cools down to form new crust. It is the mid-ocean ridges where you see the most magma produced and there has not been any other tectonic event or area that could match its procution since the Precambrian period.
Granite<span>, </span>diorite<span>, </span>syenite<span>, </span>andesite<span>, and </span>rhyolite<span>. It is also found in metamorphic rocks such as </span>gneiss<span> and </span>schist<span>.</span>
