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.
1 Analysis of the toners is also used. 2  Documents are characterized by the composition of their paper and ink. 3  Firearms can be identified by the striations on the bullets they fired and imprints on the cartridge casings. 4  Paper shredders can be potentially identified in a similar way, by spacing and wear of their blades.