Imperial College London
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DrRebeccaBell

Faculty of Engineering, Department of Earth Science & Engineering

Reader in Tectonics
 
 
 
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Contact

 

+44 (0)20 7594 0903rebecca.bell

 
 
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Location

 

2.37aRoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wrona:2019:10.1130/G46150.1,
author = {Wrona, T and Magee, C and Fossen, H and Gawthorpe, RL and Bell, RE and Jackson, C and Faleide, JI},
doi = {10.1130/G46150.1},
journal = {Geology},
pages = {729--733},
title = {3-D seismic images of an extensive igneous sill in the lower crust},
url = {http://dx.doi.org/10.1130/G46150.1},
volume = {47},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - When continents rift, magmatism can produce large volumes of melt that migrate upwards from deep below the Earths surface.  To understand how magmatism impacts rifting,  it is critical to understand  how  much  melt  is  generated  and  how it transits  the  crust. Estimating  melt volumes and pathways is difficult, however, particularly in the lower crust where the resolution of geophysical techniques is limited.  New broadband seismic reflection data allow us to image the  three-dimensional  (3-D)  geometry  of  magma  crystallized  in  the  lower  crust  (17.5-22  km depth) of the northern North Sea,  in an area previously considered a magma-poor rift.  The sub-horizontal igneous sill is 97 km long (N-S), 62 km wide (E-W), and 180 40 m thick.  We estimate that 472 161 km3of magma was emplaced within this intrusion, suggesting that the northern North Sea contains more igneous intrusions than previously thought.  The signi cant areal extent of the intrusion ( 2700 km2), as well as presence of intrusive steps, indicate sills can facilitate widespread lateral magma transport in the lower crust.
AU  - Wrona,T
AU  - Magee,C
AU  - Fossen,H
AU  - Gawthorpe,RL
AU  - Bell,RE
AU  - Jackson,C
AU  - Faleide,JI
DO  - 10.1130/G46150.1
EP  - 733
PY  - 2019///
SN  - 0091-7613
SP  - 729
TI  - 3-D seismic images of an extensive igneous sill in the lower crust
T2  - Geology
UR  - http://dx.doi.org/10.1130/G46150.1
UR  - https://pubs.geoscienceworld.org/gsa/geology/article/47/8/729/571441/3D-seismic-images-of-an-extensive-igneous-sill-in
UR  - http://hdl.handle.net/10044/1/70628
VL  - 47
ER  -
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