Geoscience Reference
In-Depth Information
Figure 9.66.
(a) A view southward of the magma plumbing system beneath Kilauea
volcano. The transition zones from the volcanic shield to oceanic crust and from
oceanic crust to the upper mantle are stippled. Square 1-km-scale grids are located
at the surface and the base of the model (depth 37 km). Individual conduit cross
sections are labelled with their depths beneath Kiluaea's caldera floor. (b) A view
eastward of the internal structure of the primary conduit, which is displayed as a
series of segments to show its internal structure. The inner transport core of the
conduit is shaded light grey. Where parts of two sections overlap, the core is shaded
medium grey; where three overlap, dark grey. Solid arrows show the retreat of the
zone through which magma ascended from the 1969-1975 interval to the 1975-1982
interval when ascent of magma was restricted to the core of the conduit. (From Ryan
(1988).)
