11 votes

How has and how does the lithosphere affect climate change?

This is a huge and interesting topic. Certainly there are many ways the climate is affected by the lithosphere (and also what is going on in the asthenosphere). The lithosphere is naturally also ...
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  • 5,896
7 votes

Can volcanos cause isostatic depression

Absolutely. Lithospheric flexure due to volcanic edifice emplacement is well-documented. Not only do you get isostatic depression near the volcano, but further afield you actually can have uplift due ...
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  • 2,563
7 votes
Accepted

Can volcanos cause isostatic depression

Yes, they can. Hawaiian Trough is a good example. The impact on thin oceanic crust is naturally larger/faster than on stiff continental crust. Generally the lithosphere will always respond to load, ...
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  • 5,896
5 votes

How has and how does the lithosphere affect climate change?

The timing of events in the lithosphere is not necesarily as large as tens to hundreds of millions of years (10s-100s My), and much shorter time scales also apply. Few examples, from short to long ...
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  • 51
5 votes

How has and how does the lithosphere affect climate change?

It's not easily answered, but I think, given the criteria you've laid out, the effects are generally pretty small. I am not interested on events that can in fact interact with the timescales of ...
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  • 5,727
4 votes

Flexure of a viscous lithosphere - derivation

The problem with my derivation is I am not sure if it correct and I do not have a way to check it. Try dimensional analysis to check your solution. Is your solution consistent with dimensional ...
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  • 3,780
4 votes
Accepted

Movements of the tectonic plates - collison between Indian Plate & Eurasian Plate

As the continental crust is too buoyant (light) to be subducted, when two continents collide they smash against each other creating a mountain range, in this case the Himalayas. This process happen ...
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  • 17.1k
4 votes

Which one is the correct concept of Continental Crust and Oceanic Crust?

Michael is correct. SIAL and SIMA are very vague and over-simplified summaries of the continental and oceanic crustal compositions. These terms may be OK for school introductions to geology, but you ...
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3 votes
Accepted

Is there a seismic discontinuity between the lithosphere and asthenosphere?

Short answer: There are actually two different Gutenberg discontinuities, and one of them corresponds to one way of defining the Lithosphere-asthenosphere boundary, or LAB. (The abstract of this ...
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  • 3,133
3 votes
Accepted

Which one is the correct concept of Continental Crust and Oceanic Crust?

The SiAl-SiMa classification is very general. The continental crust is much more varied than that, but it is ok for a first approximation. The oceanic crust is dominantly mafic (aka SiMa), composed ...
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  • 22.2k
2 votes

The age of tectonic plates

The process of forming continental crust is indeed thought to have started in the early Archean (i. e. between ca. 4 Ga and ca. 3.5 Ga). But it did continue later: Hawkesworth & Kemp showed in ...
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  • 5,278
1 vote

What role does the hydrosphere play in tectonic plate convection?

Lubrication. Not to mention hydrothermal vents which feat ecosystems that at the depth do not depend on sunlight
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1 vote

Tectonic plates terminology

Tectonic plates almost all comprise a mix of both oceanic and continental crust in different areas. The exceptions are all minor plates. Where the edges of these plates spread apart you get divergent ...
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  • 4,225
1 vote

Why is the Lithosphere-Asthenosphere Boundary an Isotherm?

Reading this question, I'm not sure if you realize what an isotherm is - in this case, imagine peeling rock from the surface of the earth until you reached a temperature of 1300 degrees Celsius. Now, ...
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