Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.
1 AuctioneerExpress.com - Online Auctions is at Trinity County, Texas. 2  is feeling hopeful with David L. Robison and 5 others at Trinity County, Texas. Groveton EMS posted this picture to encourage rural route customers to clearly show their 911 Address on their mailbox. They don't realize all mail boxes are not even near the owners home.
Sponsored Topics. Pottsboro is a town in Grayson County, Texas, United States. The population was 1,579 at the 2000 census. It is part of the ShermanâDenison Metropolitan Statistical Area. Pottsboro is located at 33Â°46â²54â³N 96Â°40â²34â³W / 33.78167Â°N 96.67611Â°W / 33.78167; -96.67611.