Iceland sits on a divergent boundary between the North American Plate and the Eurasian Plate that has formed the Atlantic Ocean. The island also sits over a hot spot. The frequent volcanic eruptions are a result of hot spot activity and separating plates.
ammunition image by Chris from Fotolia.com. Artillery shells generally come with a lot of different markings on them. These markings have several different purposes, but the main purpose for the labels is safety. The markings identify data that is crucial to both the government and the person using the artillery shell. A casual observer, or ammunition collector, might enjoy knowing a little bit about the markings and what they mean as well.
In 1841, insignia called distinguishing marks were first prescribed as part of the official uniform. An eagle and anchor emblem, a forerunner of the rating badge, was the first distinguishing mark. In 1886 rating badges were established, and some 15 specialty marks were also provided to cover the various ratings.