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R. Stephen J. Sparks
Researcher at University of Bristol
Publications - 93
Citations - 6593
R. Stephen J. Sparks is an academic researcher from University of Bristol. The author has contributed to research in topics: Volcano & Magma. The author has an hindex of 39, co-authored 93 publications receiving 5745 citations.
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The Generation of Granitic Magmas by Intrusion of Basalt into Continental Crust
TL;DR: Herbel et al. as discussed by the authors developed a quantitative theory for the roof melting case and applied it to basalt sills in hot crust, the theory predicts that basalt Sills of thicknesses from 10 to 1500 m require only 1 to 270 y to solidify and would form voluminous overlying layers of convecting silicicic magma.
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Vertically extensive and unstable magmatic systems: A unified view of igneous processes
TL;DR: The evidence that shallow magma chambers are actually assembled quickly from much larger, crystal-rich transcrustal magmatic systems is reviewed, infering that igneous processes differ substantially in the lower and upper crust.
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Axisymmetric collapses of granular columns
TL;DR: In this paper, experimental observations of the collapse of initially vertical columns of small grains are presented, mainly with dry grains of salt or sand, with some additional experiments using couscous, sugar or rice.
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Collapses of two-dimensional granular columns.
TL;DR: It is determined that nearly all details of the collapse, including the position of the flow front as a function of time, the emplacement time, and the self-similar final profiles, are established during the spreading phase and can be expressed in terms of the initial geometrical parameters but are independent of basal and internal friction parameters.
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How volcanoes work: a 25 year perspective
TL;DR: The physical processes that modulate magma accumulation in the upper crust, transport magma to the surface, and control eruptive activity have been investigated in this paper, focusing on the physical processes of volcanic activity.