<P> Volcanic cones are among the simplest volcanic landforms . They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater . Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption . Types of volcanic cones include stratocones, spatter cones, tuff cones, and cinder cones . </P> <P> Stratocones are large cone - shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered around a cylindrical vent . Unlike shield volcanoes, they are characterized by a steep profile and periodic, often alternating, explosive eruptions and effusive eruptions . Some have collapsed craters called calderas . The central core of a stratocone is commonly dominated by a central core of intrusive rocks that range from around 500 meters (1,600 ft) to over several kilometers in diameter . This central core is surrounded by multiple generations of lava flows, many of which are brecciated, and a wide range of pyroclastic rocks and reworked volcanic debris . The typical stratocone is an andesitic to dacitic volcano that is associated with subduction zones . They are also known as either stratified volcano, composite cone, bedded volcano, cone of mixed type or Vesuvian - type volcano . </P>

Name the basic features of a typical volcanic cone