Mathematics – Logic
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009e%26psl.277..464p&link_type=abstract
Earth and Planetary Science Letters, Volume 277, Issue 3-4, p. 464-473.
Mathematics
Logic
6
Scientific paper
It is commonly assumed that the stress state at passive margins is mainly dominated by ridge push and that other stress sources have only a limited temporal and/or spatial influence. We show, by means of numerical modelling, that observed variations in lithosphere structure and elevation from a margin towards continental interiors may also produce significant gravitational potential stresses competing with those induced by ridge push forces. We test this hypothesis on an actual case where abundant geological and geophysical datasets are available, the shelf of southern Norway and adjacent southern Norwegian mountains (or Southern Scandes). The modelling results are consistent with the main features of three key-observables: (1) undulations of the truncated geoid (reflecting variations in gravitational potential energy in the lithosphere), (2) significant stress rotations both offshore and onshore and (3) the seismicity pattern of southern Norway. The contribution of the Southern Scandes to the regional stress pattern appears to be far more significant than previously anticipated. In addition, the modelling provides a physical explanation for the enigmatic seismicity of southern Norway. Gravitational potential stresses arising from variations in the lithospheric structure between a passive margin and its continental borderlands, can exert a significant control on the dynamic evolution of the margin in concert with ridge push.
Cloetingh Sierd A. P. L.
Pascal Christophe
No associations
LandOfFree
Gravitational potential stresses and stress field of passive continental margins: Insights from the south-Norway shelf does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gravitational potential stresses and stress field of passive continental margins: Insights from the south-Norway shelf, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational potential stresses and stress field of passive continental margins: Insights from the south-Norway shelf will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1562292