Sentence:  Of the five proposed types of Kuroko ore deposits, three form at the surface: type III near the <WSD>exhalative</WSD> vent, type IV down-basin from the vent in a volcanic rock-dominated locality, and type V in the deeper part of the basin in a sediment-dominated environment. 
Meaning of the word marked with <WSD> tags:  Pertaining to or resulting from a process that expels matter, such as the eruption of a volcano or a hot-water vent.