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Hordaland Group

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Series: Geological Society, London, Special Publications
Published: 01 January 2003
DOI: 10.1144/GSL.SP.2003.216.01.10
EISBN: 9781862394643
... Abstract During a regional seismic interpretation study of leakage anomalies in the northern North Sea, mounds and zones with a highly chaotic seismic reflection pattern in the Tertiary Hordaland Group were repeatedly observed located above gas chimneys in the Cretaceous succession. The chaotic...
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Map of Top <b>Hordaland</b> <b>Group</b> Unconformity in the northern North Sea (time); c...
Published: 01 March 2016
Fig. 1. Map of Top Hordaland Group Unconformity in the northern North Sea (time); contour interval 25 ms. Yellow line connects wells in log correlation ( Fig. 6 ).
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Seismic section through mound at the Top <b>Hordaland</b> <b>Group</b> Unconformity in th...
Published: 01 March 2016
Fig. 8. Seismic section through mound at the Top Hordaland Group Unconformity in the Visund area. Top of Oligocene sand is interpreted at high reflective seismic interval c . 180 ms below the unconformity. The wing-like reflections at the margin of the sand should be noted. Map to the right
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An oblique view of the top <b>Hordaland</b> <b>Group</b> unconformity seen from SE (blue ...
Published: 01 January 2013
Fig. 5. An oblique view of the top Hordaland Group unconformity seen from SE (blue colours indicate deep areas; red colours shallow areas). Exact positions, depths (in ms) and horizontal scale are given in the inset map. The yellow line shows the position of the escarpment and the dots
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( a ,  b ) Detailed perspective map of the top <b>Hordaland</b> <b>Group</b> unconformity...
Published: 01 January 2013
Fig. 6. ( a , b ) Detailed perspective map of the top Hordaland Group unconformity above the Snorre Field. The mounds are up to 100 ms high and the escarpment is 40–80 ms high. Both the escarpment and small circular depressions (red arrows), which are interpreted as palaeo-pockmarks, are clearly
Journal Article
Published: 01 January 2013
Journal of the Geological Society (2013) 170 (1): 133-145.
...Fig. 5. An oblique view of the top Hordaland Group unconformity seen from SE (blue colours indicate deep areas; red colours shallow areas). Exact positions, depths (in ms) and horizontal scale are given in the inset map. The yellow line shows the position of the escarpment and the dots...
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Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP403.4
EISBN: 9781862396791
... of the Sele and Balder formations and Hordaland Group to create an ‘intrusive trap’. The Volund Field consists of a deeper central unit of stacked sandstone sills, surrounded by shallower, steeper-dipping injected sandstone dykes, which make excellent reservoirs with consistently high porosity...
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Journal Article
Journal: Geophysics
Published: 29 December 2014
Geophysics (2014) 80 (1): D89-D98.
... a new equation for S-wave velocity prediction for ooze-rich claystones with average densities between 1.7 and 1.85 g / cm 3 . The V P / V S ratios increase with depth in the Lower Oligocene and Eocene claystones of the Hordaland Group, and we interpreted this to reflect a downward increase in the amount...
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Journal Article
Journal: Geology
Published: 01 May 2012
Geology (2012) 40 (5): 467-470.
... to medium-grained, sub-rounded to rounded grains. We compare the distribution of the sand with the results of scaled physical experiments. In our interpretation, high fluid pressure fractured the regional Hordaland Group seal in the study area, so that fluidized sand moved rapidly to the seafloor through...
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NW–SE-striking seismic section crossing the high mound at the top <b>Hordaland</b>...
Published: 01 January 2013
Fig. 8. NW–SE-striking seismic section crossing the high mound at the top Hordaland Group unconformity (THGU) above the Visund Field and underlying sand injectites (yellow overlay) (location shown in Fig. 5 ). Irregular zigzag-shaped peak and trough reflections are c . 200 ms below the top
Journal Article
Published: 01 May 2005
Petroleum Geoscience (2005) 11 (2): 99-112.
...) (2198) (420) (534) (20) (103) GC503-163 2865–2896 Montrose Grp (Late Paleocene) 1.209 1.105 0.868 392.9±7.4 295.5±20.9 8 9.67±0.29 cuttings (60–58 Ma) (1954) (550) (432) (20) (74) GC503-94 4210–4223 Judd Group (Late Jurassic) 1.396 0.028 1.617 392.9±7.4 6.2±5.6...
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Journal Article
Published: 01 December 2010
Journal of the Geological Society (2010) 167 (6): 1209-1224.
... ( Surlyk et al. 2003 ). Above the Tor Formation is the Ekofisk Formation including the low-porosity ‘Ekofisk tight zone' ( Isaksen & Tonstad 1989 ; Surlyk et al. 2003 ). The subsequent Palaeogene and Neogene succession (Rogaland, Hordaland and Nordland Groups) is dominated by fine-grained...
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( a ) NW–SE-striking seismic section showing the escarpment at the top Hord...
Published: 01 January 2013
Fig. 7. ( a ) NW–SE-striking seismic section showing the escarpment at the top Hordaland Group unconformity (THGU) just south of well 34/8-3A and an underlying sand injectite (yellow overlay) (location in Fig. 5 ). Zigzag-shaped peak and trough reflections, which tie to the top and base of sands
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East–west-striking seismic section crossing the high flat area at the top H...
Published: 01 January 2013
Fig. 9. East–west-striking seismic section crossing the high flat area at the top Hordaland Group unconformity (THGU) in the northern part of the study area (location shown in Fig. 5 ). Reflections below the top Hordaland Group unconformity are not folded. The escarpments (black arrows
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( a ) Regional north–south line showing gentle (0.3°) northward tilting of ...
Published: 01 January 2013
Fig. 10. ( a ) Regional north–south line showing gentle (0.3°) northward tilting of the top Hordaland Group unconformity (green line) in the northern North Sea (location shown in Fig. 1 ). ( b ) was flattened on the yellow line in ( a ) to remove the regional tilt. The incision and erosion
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North–south seismic section illustrating Pleistocene sand unit. Location of...
Published: 01 March 2016
Fig. 5. North–south seismic section illustrating Pleistocene sand unit. Location of profile is shown on the inset map (10 ms contour interval) of the Top Hordaland Group Unconformity and also in Figure 2 .
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East–west seismic section through wells 34/7-4 and 34/7-9 illustrating the ...
Published: 01 March 2016
Fig. 4. East–west seismic section through wells 34/7-4 and 34/7-9 illustrating the Cenozoic stratigraphy above the Snorre Field. The Oligocene sands, high-relief mounds at the Top Hordaland Group Unconformity and disrupted Pleistocene sand unit should be noted. Also noteworthy is the local
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Seismic section through wells 34/7-4 and 34/7-9 showing intrusive (i) and e...
Published: 01 January 2013
Fig. 12. Seismic section through wells 34/7-4 and 34/7-9 showing intrusive (i) and extrusive (e) sands, expressed as low gamma-ray readings (red curve), above the Snorre Field (location in Fig. 6 ). The deep V-shaped bright anomalies in the lower part of the Hordaland Group are partly carbonate
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Map of Pleistocene clinoform surface 1 with approximate outline of Pleistoc...
Published: 01 March 2016
Fig. 2. Map of Pleistocene clinoform surface 1 with approximate outline of Pleistocene sand unit (yellow dashed line). Red area shows mounds at the Top Hordaland Group surface in the Snorre area that cut the base of the sands. Inset map (from Ottesen et al . 2014 ) represents approximately
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Palaeogene stratigraphy of the Faroe–Shetland Basin (FSB) (adapted from  Sc...
Published: 27 January 2017
Fig. 4. Palaeogene stratigraphy of the Faroe–Shetland Basin (FSB) (adapted from Schofield & Jolley 2013 ), with BGS lithostratigraphy ( Ritchie et al. 2011 ), BP T-sequence stratigraphy (after Ebdon et al. 1995 ), and the North Sea equivalent Hordaland Group lithostratigraphy (found