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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/18901

Title: Timing and Mechanisms Controlling Evaporite Diapirism on Ellef Ringnes Island, Canadian Arctic Archipelago
Authors: Macauley, Jennifer Anne
Advisor: Cruden, Alexander R.
Department: Geology
Keywords: evaporite domes
salt tectonics
geodynamics
Canadian Arctic
Issue Date: 15-Feb-2010
Abstract: This thesis investigates the timing and mechanisms involved in the formation of evaporite piercement structures on Ellef Ringnes Island, Canadian Arctic Archipelago. The study includes the interpretation of industry seismic reflection and borehole data to characterize the geometry of the domes, 1D backstripping of wells to investigate the role of tectonic influences on diapirism, and analogue modelling to better understand the mechanisms that drive diapirs with dense anhydrite caps. I propose that basement structures played a significant role in the formation of evaporite domes by triggering and directing salt movement. The domes developed during the Mesozoic by passive growth driven by the differential loading of salt on adjacent fault blocks, which led to their present day asymmetric geometries. Diapir growth rates in the Mesozoic were closely linked to the rate of sedimentation, which was greatly influenced by the amount of accommodation space provided by tectonic subsidence of the basin.
URI: http://hdl.handle.net/1807/18901
Appears in Collections:Master
Department of Geology - Master theses

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