It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Think about your average volcano sticking out of the ocean. It may have 100 square miles (10x10 miles) where added mass could have some effect. So if the sea level around that volcano is increased by one meter then the amount of newly-introduced weight affecting that volcano is 570 billion pounds. If it was 99% of the way to blowing its top already then that might just be plenty to push it over the edge. The same is true of faults, except their area is often much larger.