A fault is a break in the crust caused by the movement of the plates. Along these breaks the crust moves with the plates causing earthquakes.
There are four different types of faults.
Top Five Major Fault Lines in the US
August 23rd, 2011, a 5.8 earthquake hit the east coast sending tremors from Toronto, Canada to Raleigh, North Carolina. Here are five of the biggest fault lines in the US.http://www.yayboo.com/Places/Top_Five_Major_Fault_Lines_in_the_US
The Black Sea: Energy Security Fault Line?
An unfortunate consequence of lofty expectations, past optimism for the Black Sea to become the “next North Sea” has wilted with time. Now, the latest hopes for a Black Sea energy bonanza now lie with a fresh deal inked between the Turkish Petroleum Corporation (TPAO) and Royal Dutch Shell to explore 1,500 square kilometers with hundreds of millions of dollars at stake.
But Turkey, which spent some $60 billion for energy last year, remains tenacious in seeking out domestic and regional alternatives to the country’s overwhelming dependence on farther-flung external sources. While the jury is still out on the ultimate viability of the Black Sea as an energy source, the impetus to develop locally is catching on beyond Turkey and throughout the region. Partially spurred in no small part by the shifting economics of energy, the more urgent -- if generally muted -- rationale lies with geopolitical realities.
Italy at the mercy of fault lines
Italy has a long history of earthquakes - experts say they have influenced everything from the distribution of the population and adaptation of architecture to the dialect spoken in different areas of the country.Since the major earthquake of 1627, which devastated the central region of Gargano, Italy has acquired a reputation as being one of the most earthquake-prone countries in the world.
What makes it so, say experts, is the overall movement of tectonic plates in Europe and Africa and the collision course they have been on, in addition to the existence of well-defined fault-lines and geological movements criss-crossing the area.
They also point out that, with the exception of a line running across the border into Slovenia in the north, Italy's seismic activity is generally confined to the Italian peninsula (полуостров) and its islands.http://news.bbc.co.uk/2/hi/europe/2383225.stm