Emplacement mechanics of igneous intrusions and extrusions in
sedimentary basins; insights from 3D seismic reflection data
Dr Christopher Jackson (Imperial College)
Dr Craig Magee (Imperial College)
Dr Nick Schofield (University of Birmingham)
Dr Simon Holford (University of Adelaide)
Recent studies have demonstrated that seismic reflection data are a powerful
tool with which to study the emplacement dynamics and 3D structure of igneous
intrusions and extrusions. However, important questions remain as to the exact
way in which magma ascends through the upper crust, and the role that preexisting normal fault networks have on the determine magma flow pathways, the
resulted 3D architecture of igneous sills and dykes, and the location and size of
extrusive igneous bodies such as volcanoes.
The aim of this project is to: (i) determine the 3D geometry of igneous intrusions
and associated normal fault arrays; (ii) to determine the control that normal
faults have on magma flow in the upper crust; and (iii) to infer the deformation
mechanisms that accommodate the emplacement of magmatic material. To
achieve these aims, this project will use high-quality, 3D seismic reflection data
from a series of circum-Australian basins to provide exciting new insights into
several important aspects of igneous geology.
This PhD would suit a student with an interest in structural geology, tectonics or
igneous geology. The candidate will hold a very strong (very high 2:1 or higher)
undergraduate (BSc or equivalent) and/or masters level degree or equivalent in
geology or geophysics. The PhD student will receive training in 3D seismic
interpretation, wireline log analysis and quantitative structural analysis. These
skills will be useful for a future career in the hydrocarbon industry or in
academic or applied research. For further information on this project please
contact Dr Christopher Jackson (c.jackson@imperial.ac.uk).