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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Inflation and collapse of the Wai’anae volcano (Oahu, Hawaii, USA): implications from rock magnetic properties and magnetic fabric data of dikes

Fig. 7

Conceptual block diagrams and Schmidt (equal area) plots (maximum Kmax, intermediate Kint and minimum Kmin axes represented by squares, triangles and circles, respectively; projection on the lower hemisphere showing different relationships between crystal orientation, magma flow direction, and principal susceptibilities). The blocks represent a section of a north–south vertical dike with vertical upward magma flow direction. The equal area plots are from the eastern dike margins. For realism, it is considered that the crystal orientations show some, but limited, scattering around a mean direction. a “Normal” fabric Kmax on the Schmidt plot corresponds to the magnetic zone axis. b “Inverse” fabric related to the presence of SD grains. c Rolling effect of large grains with Kmax oriented normal to flow direction (within the plane of the dike, Kint and Kmin are parallel to flow direction according to the Fig. 6). Original diagrams are from Cañón-Tapia (2004)

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