Fun
Only logged in members can reply and interact with the post.
Join SimilarWorlds for FREE »

Can bedrock be broken by earthquake or volcano?

My bet is volcanoes can crack through bedrock.
This page is a permanent link to the reply below and its nested replies. See all post replies »
JoyfulSilence · 51-55, M
Well, rising magma and gases under high pressure put strain on rocks which causes fractures (earthquakes).

In fact, that is one way scientists can predict volcanic eruptions, by measuring seismic activity. As well as heat, gases, elevation changes, etc.

And earthquakes cause fractures that magma can fills in.

Like in Iceland, where a plume of rising heat and magma causes the crust to dome up, then crack, and spread. The cracks relieve pressure, like an opening soda bottle, which causes the gases to bubble and magma to erupt into the cracks, forming fissure eruptions.