Extrusive igneous rocks are formed on the surface of the earth. These rocks are formed as a result of a volcanic eruption. Most have a fine grained texture made of small crystals due to rapid cooling. However, some of the lava cools so quickly that no crystals have time to form. An example of this type of rock is obsidian, commonly called black glass or volcanic glass.
Hurricane Sandy (unofficially known as Superstorm Sandy) was the deadliest and most destructive hurricane of the 2012 Atlantic hurricane season, and the second-costliest hurricane in United States history.
Hurricane Sandy - October 29, 2012. Summary: Hurricane Sandy was the 18th named tropical cyclone of the 2012 Atlantic hurricane season (June 1 - November 30). Sandy formed in the central Caribbean on October 22nd and intensified into a hurricane as it tracked north across Jamaica, eastern Cuba and the Bahamas. Sandy moved northeast of the United States until turning west toward the mid Atlantic coast on the 28th. Sandy transitioned into a post-tropical cyclone just prior to moving onshore near Atlantic City, NJ. For a complete summary of Sandy, view the National Hurricane Center Sandy Tropical Cyclone Report.