Bardiche at the top of the pole and one lower, at the base of the blade) or one socket at the top and one surface mount at the base, effectively mounting the heavy blade to the wooden shaft. This construction is also seen in Scottish polearms, such as the Lochaber axe and Jeddart staff, and bardiches are known to have been imported into Scotland in the 16th and 17th centuries Depending on the design of the particular weapons in question, at times a bardiche may greatly resemble a voulge. While the blade was often very long for an axe (usually exceeding
Types of volcanic eruptions Types of volcanic eruptions Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three different types of eruptions. The most well-observed are magmatic eruptions, which involve the decompression of gas within magma that