Imperial College London
Portrait Picture

Professor Christopher Jackson

Faculty of Engineering, Department of Earth Science & Engineering

Visiting Professor
 
 
 
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Contact

 

c.jackson Website

 
 
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Location

 

1.46ARoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Jackson:2018:10.1111/bre.12332,
author = {Jackson, C and Royce-Rogers, E and Elliott, GM and Gawthorpe, RL and Aas, TE},
doi = {10.1111/bre.12332},
journal = {Basin Research},
pages = {514--538},
title = {Salt thickness and composition influence rift structural style, northern North Sea, offshore Norway},
url = {http://dx.doi.org/10.1111/bre.12332},
volume = {31},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - ‘Salt’ giants are typically halitedominated, although they invariably contain other evaporite (e.g. anhydrite, bittern salts) and nonevaporite (e.g. carbonate, clastic) rocks. Rheological differences between these rocks mean they impact or respond to riftrelated, upper crustal deformation in different ways. Our understanding of basinscale lithology variations in ancient salt giants, what controls this, and how this impacts later riftrelated deformation, is poor, principally due to a lack of subsurface datasets of sufficiently regional extent. Here we use 2D seismic reflection and borehole data from offshore Norway to map compositional variations within the Zechstein Supergroup (Lopingian), relating this to the structural styles developed during Middle JurassictoEarly Cretaceous rifting. Based on the proportion of halite, we identify and map four intrasalt depositional zones (sensu Clark et al., 1998) offshore Norway. We show that, at the basin margins, the Zechstein Supergroup is carbonatedominated, whereas towards the basin centre, it become increasingly halitedominated, a trend observed in the UK sector of the North Sea Basin and in other ancient salt giants. However, we also document abrupt, large magnitude compositional and thickness variations adjacent to large, intrabasin normal faults; for example, thin, carbonatedominated successions occur on faultbounded footwall highs, whereas thick, halitedominated successions occur only a few kilometres away in adjacent depocentres. It is presently unclear if this variability reflects variations in syndepositional relief related to flooding of an underfilled presalt (Early Permian) rift or syndepositional (Lopingian) riftrelated faulting. Irrespective of the underlying controls, variations in salt composition and thickness influenced the Middle JurassictoEarly Cretaceous rift structural style, with diapirism characterising hangingwall basins where autochthonous salt was thick and haliterich
AU  - Jackson,C
AU  - Royce-Rogers,E
AU  - Elliott,GM
AU  - Gawthorpe,RL
AU  - Aas,TE
DO  - 10.1111/bre.12332
EP  - 538
PY  - 2018///
SN  - 0950-091X
SP  - 514
TI  - Salt thickness and composition influence rift structural style, northern North Sea, offshore Norway
T2  - Basin Research
UR  - http://dx.doi.org/10.1111/bre.12332
UR  - https://onlinelibrary.wiley.com/doi/abs/10.1111/bre.12332?af=R
VL  - 31
ER  -
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