Did you know that "megalith" means "big rock", which is certainly a good description of Stonehenge?
Earth and Space Science Concept of the Day
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Dip-slip fault
xDip-slip fault : Dip-slip faults are inclined fractures where the blocks have mostly shifted vertically. If the rock mass above an inclined fault moves down, the fault is termed normal, whereas if the rock above the fault moves up, the fault is termed reverse.
Sumatra experiences frequent seismic activity because it is located near the boundary of two of Earth's tectonic plates. Earthquakes occur at 'subduction zones,' such as the one west of Indonesia, when...Read more