Effect of metamorphism on Earth's surface.

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Metamorphism plays a significant role in shaping the Earth's surface, primarily through the exposure of metamorphic rocks due to tectonic activity, uplift, and erosion. While some argue that metamorphism is not directly responsible for surface appearance, regions with extensive metamorphic rocks, such as the Canadian and Baltic shields, exhibit distinctive flat topographies and numerous lakes. In contrast, areas with limited exposure, like the Scottish Highlands, showcase elevated landforms due to the resilience of harder metamorphic rocks. The discussion highlights the importance of tectonic processes in revealing metamorphic features, suggesting that their visual impact is a secondary result of these geological activities. Further exploration of specific types of metamorphism, such as contact metamorphism, could enhance understanding of its effects on surface geology.
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How is metamorphism responsible for the Earth's surface outlook?
 
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hi there
Welcome to PF :)

Am trying to figure where you are going with this?

Metamorphism occurrs at depth. we only see metamorphic rocks at the surface of the Earth due to tectonic activity...
Uplift during many earthquakes over the millions of years, folding and erosion of landscapes

I don't see it as responsible for the way the surface of the Earth looks

cheers
Dave
 
davenn said:
I don't see it as responsible for the way the surface of the Earth looks
That's not entirely true. In locations where we have extensive metamorphic rocks, such as teh Canadian and Baltic shields, we have a very distinctive topography of comparatively flat land with many lakes.

Where the exposure is more restricted in area the harder character of the metamorphic rocks is likely to see them higher than the surrounding countryside. The Scottish Highlands would be an example of that.
 
Ophiolite said:
That's not entirely true. In locations where we have extensive metamorphic rocks, such as teh Canadian and Baltic shields, we have a very distinctive topography of comparatively flat land with many lakes.

Where the exposure is more restricted in area the harder character of the metamorphic rocks is likely to see them higher than the surrounding countryside. The Scottish Highlands would be an example of that.

yes that's fair comment... :)

I guess I was looking at it from the other point of view that we only see the metamorphic rocks at the surface because of tectonic activity. So any visual/geological effect they have on the Earth's surface is a secondary outcome.

I think that made sense ;)

it would be interesting if the OP expanded on what they were wanting to know

Dave
 
yovans said:
How is metamorphism responsible for the Earth's surface outlook?

This sounds a bit like a schoolwork question. Maybe we should ask the OP to give us their thoughts on the question...
 
perhaps the OP is referring to contact metamorphism
 

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