Pole weapon long blade used by both infantry and cavalry. Occasionally glaive blades were created with a small hook or spike on the reverse side. Such glaives are named glaive-guisarme. A voulge (occasionally called a pole cleaver) is a curved blade attached to a pole by binding the lower 2/3 of the blade to the side of the pole, to form a sort of axe. Looks very similar to a glaive. A svärdstav (literally sword-staff) is a Swedish medieval pole arm that consists of a two-edged sword blade attached to a staff. The illustrations often show the weapon being equipped with sword-like
Types of volcanic eruptions propels it forward. Phreatomagmatic eruptions are another type of volcanic eruption, driven by the compression of gas within magma, the direct opposite of the process powering magmatic activity. The third eruptive type is the phreatic eruption, which is driven by the superheating of steam via contact with magma; these eruptive types often exhibit no magmatic release, instead causing the granulation of existing rock. Within these wide-defining eruptive types are several subtypes. The weakest are Hawaiian and submarine, then Strombolian, followed by Vulcanian and Surtseyan. The stronger eruptive types are Pelean eruptions, followed by Plinian eruptions; the strongest eruptions are called