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What is the Moho?

The Moho is the Mohorovicic Discontinuity. A seismic discontinuity is a boundary between 2 layers with different properties. The Mohorovicic discontinuity (Moho) is the crust - mantle boundary (within the li...
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Answered by Alex K. • Geology tutor
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Describe three styles of tectonic plate movement at plate boundaries.

The three styles of tectonic plate movement are convergent (when plates move towards each other), divergent (when plates move apart), and transform (when plates slide past each other).At convergent plate bou...
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Answered by Beth B. • Geology tutor
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What could be interpret about the formation of a sedimentary rock from the information that its grains are, in the majority, fine and well rounded?

The fact that the grains are well rounded suggests that they have been subjected to a relatively high level of erosion (due to the smoothing of sharp edges). From this, we could interpret that the sediment h...
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Answered by Adela B. • Geology tutor
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Explain the evidence for seafloor spreading?

One piece of evidence for seafloor spreading is that with increased distance from the Mid Ocean Ridge (MOR), the age of rocks on the seafloor increases. This supports the concept that molten rock is ejected ...
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Answered by Adela B. • Geology tutor
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Please describe how, and explain why the texture of an igneous intrusion would change from the outer edge to the centre.

When intruding, hot magma contacts the cool country rock this will cause the outer edge will quickly cool and harden, therefore there will not be much time for crystals to form leaving a very fine crystal te...
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Answered by Sophia A. • Geology tutor
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