Microstructures and Diagenesis in North Sea Fault ZonesImplications for Fault-Seal Potential and Fault-Migration Rates

1997 ◽  
Author(s):  
S. J. Hippler
Keyword(s):  
North Sea ◽  
Fault Zones ◽  
Migration Rates ◽  
Fault Migration

scholarly journals Migration of saithe (Pollachius virens) in the Northeast Atlantic

2013 ◽  
Vol 70 (4) ◽  
pp. 782-792 ◽  
Author(s):  
Eydna í Homrum ◽  
Bogi Hansen ◽  
Sigurður Þór Jónsson ◽  
Kathrine Michalsen ◽  
Julian Burgos ◽  
...  
Keyword(s):  
North Sea ◽  
Marine Science ◽  
Northeast Atlantic ◽  
Migration Rates ◽  
Net Migration ◽  
Icelandic Waters

Abstract Homrum, E. í, Hansen, B., Jónsson, S. Þ., Michalsen, K., Burgos, J., Righton, D., Steingrund, P., Jakobsen, T., Mouritsen, R., Hátún, H., Armannsson, H., and Joensen, J. S. 2013. Migration of saithe (Pollachius virens) in the Northeast Atlantic. – ICES Journal of Marine Science, 70: 782–792. Saithe (Pollachius virens) stocks in the Northeast Atlantic intermingle as a result of migration among stock areas. The extent of migration has been poorly quantified. Here, we estimate measures of the migration based on existing tagging data from Icelandic, Faroese and Continental (Scotland, North Sea and Norway) waters. Saithe tagged in Icelandic waters were seldom caught outside Icelandic waters (<1% of tag returns), whereas 42% of adult saithe tagged in Faroese waters were recaptured outside Faroese waters. Of adult saithe tagged in Norwegian waters 6.6% were recaptured outside Continental waters. In broad terms, there was a net migration of saithe towards Icelandic waters. The distance between tagging and recapture increased with increasing size and age, with saithe tagged in Norwegian waters moving the longest distances. The results demonstrate significant, but variable, migration rates of adult saithe in the Northeast Atlantic. More detailed studies are needed to clarify the mechanisms behind the migration and what causes the differences among the areas.

scholarly journals Fossil fault zones: significance and applications

2018 ◽  
Vol 47 (1) ◽  
pp. 61-71
Author(s):  
Mohsen Ehteshami-Moinabadi
Keyword(s):  
Structural Geology ◽  
Active Faults ◽  
Fault Zones ◽  
Ore Deposits ◽  
Fluid Migration ◽  
Analog Model ◽  
Fault Rocks ◽  
Geological Processes ◽  
Fault Migration ◽  
Source Of Information

Fossil faults are permanently inactive fault zones, preserved and recognized in the geological record of an area by major brittle, semi-brittle, or mylonitic fault rocks, showing significant width and displacement. Applications and purposes of fossil fault researches include, but are not limited to, investigation on seismic faulting, analog model of active faults, metal ore deposits, paleo-path and fluid migration, deformation mechanism and fault migration along-strike and down-dip. These categories involve subsidiary subjects, some of which are relatively new and seem to attract more attention. Fossil faults are a major source of information about past geological processes that were active at some depth in Earth’s lithosphere, and also provide an opportunity for assuming and predicting the future in structural geology. This paper reviews the researches done on fossil faults and their applications since the early 1970s, albeit not always listed as “fossil faults”.

Halokinetic initiation of Mesozoic tectonics in the southern North Sea: a regional model

1994 ◽  
Vol 131 (4) ◽  
pp. 559-561 ◽  
Author(s):  
M. R. Allen ◽  
P. A. Griffiths ◽  
J. Craig ◽  
W. R. Fitches ◽  
R. J. Whittington
Keyword(s):  
Fault Zone ◽  
North Sea ◽  
Fault Zones ◽  
Late Triassic ◽  
Northern Margin ◽  
Southern North Sea ◽  
The North ◽  
The Uk ◽  
Zechstein Salt ◽  
Shape Changes

AbstractThe North Dogger Fault Zone is located at the northern margin of the UK Southern North Sea Basin, at the edge of the mobile Zechstein Supergroup, and was particularly active during late Triassic and early Jurassic times. It resembles geometrically, and is related tectonically to, the Dowsing Fault Zone which was initiated in late Scythian time along the southwestern edge of the mobile salt. It is proposed that both of these basin-bounding fault systems were initiated in response to the buoyant growth of salt swells in the centre of the Southern North Sea Basin. Passive folding of the Triassic strata over the swells, which accommodated the shape changes caused by halokinesis, led to extension on the fault zones at the edge of the mobile Zechstein salt.

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