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.
USAAF unit identification aircraft markings, commonly called tail markings after their most frequent location, were numbers, letters, geometric symbols, and colors painted onto the tails (vertical stabilizer fins, rudders and horizontal surfaces), wings, or fuselages of the aircraft of the United States Army Air Forces during the Second World War ...