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.
Jeff Carroll, ALLEYTON, TX, Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/hna25), accessed October 06, 2015. Uploaded on June 9, 2010.Published by the Texas State Historical Association.ompletion of the railroad to Alleyton in 1860 made the town the terminus for the southernmost railroad in the state. Alleyton became the largest and most active town in Colorado County. A post office was established there in 1860.