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Journal articles on the topic 'Shetland Basin'

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Published: 4 June 2021

Last updated: 14 February 2022

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1

ASHCROFT, W. A., A. HURST, and C. J. MORGAN. "Reconciling gravity and seismic data in the Faeroe–Shetland Basin, West of Shetland." Geological Society, London, Petroleum Geology Conference series 5, no. 1 (1999): 595–600. http://dx.doi.org/10.1144/0050595.

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2

GRANT, N., A. BOUMA, and A. McINTYRE. "The Turonian play in the Faeroe–Shetland Basin." Geological Society, London, Petroleum Geology Conference series 5, no. 1 (1999): 661–73. http://dx.doi.org/10.1144/0050661.

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3

TURNER, J. D., and R. A. SCRUTTON. "Subsidence patterns in western margin basins: evidence from the Faeroe–Shetland Basin." Geological Society, London, Petroleum Geology Conference series 4, no. 1 (1993): 975–83. http://dx.doi.org/10.1144/0040975.

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4

Lee, D. K., Y. K. Jin, Y. Kim, and S. H. Nam. "Seismicity and tectonics around the northern Antarctic Peninsula from King Sejong station data." Antarctic Science 12, no. 2 (June 2000): 196–204. http://dx.doi.org/10.1017/s0954102000000250.

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Local earthquakes recorded at the King Sejong station (62° 13′31″S, 58° 47′07″W) from 1995–96 have been analysed to study the seismicity and tectonics around the northern Antarctic Peninsula. The nature of shallow-focused normal fault earthquakes along the South Shetland Platform is still unclear. Dominant normal fault earthquakes and minor strike-slip earthquakes in the Eastern Bransfield Basin suggest 1) ongoing extension, and 2) transtensional stress transmitted from the Antarctic–Scotia transform boundaries, the South Scotia Ridge and the Shackleton Fracture Zone. A lack of seismicity in the Central Bransfield Basin supports that active seismicity in the Eastern Bransfield Basin is not a result of subduction along the South Shetland Trench. Shallow focused earthquakes have been observed along the NW–SE trending gravity low line between the Central and the Eastern Bransfield Basins that approximately coincides with the landward projection of a fracture zone in the former Phoenix Plate.

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5

Larsen, Michael, Christian Knudsen, Dirk Frei, Martina Frei, Thomas Rasmussen, and Andrew G. Whitham. "East Greenland and Faroe–Shetland sediment provenance and Palaeogene sand dispersal systems." Geological Survey of Denmark and Greenland (GEUS) Bulletin 10 (November 29, 2006): 29–32. http://dx.doi.org/10.34194/geusb.v10.4899.

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The sedimentation and basin evolution of the Kangerlussuaq Basin, southern East Greenland has gained renewed interest with the licensing rounds offshore the Faroe Islands in 2000 and 2005, as it forms an important analogy to the Faroese geological setting. The Faroes frontier area is in part covered by basalts and is a high-risk area with poorly known plays and sedimentary basins. It is therefore essential to obtain as much information as possible on the evolution of sedimentary basins on the rifted volcanic margins closest to the Faroese Islands margin. Plate reconstructions of the North Atlantic region indicate the former close proximity of East Greenland to the Faroe Islands region (Fig. 1), and the Kangerlussuaq Basin thus constitutes the most important field analogue with respect to stratigraphy, major unconformities and basin evolution. The study of the sedimentary succession in the Kangerlussuaq Basin, and the provenance of the sandstones in particular, will provide constraints on exploration models and may help to predict the distribution of potential reservoir sandstones in the Faroese offshore basins, and eventually lead to development of play types that are new to this frontier region.This paper presents the main conclusions from two research projects: Stratigraphy of the pre-basaltic sedimentary succession of the Kangerlussuaq Basin -Volcanic basin of the North Atlantic and An innovative sedimentary provenance analysis, jointly undertaken by the Geological Survey of Denmark and Greenland (GEUS) and CASP (formerly Cambridge Arctic Shelf Programme). Both projects were initiated in October 2002 and concluded in September 2005. They form part of Future Exploration Issues Programme of the Faroese Continental Shelf (SINDRI programme), established by the Faroese Ministry of Petroleum and financed by the partners of the Sindri Group (see Acknowledgements).

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6

DEAN, KEVIN, KEVIN McLACHLAN, and ALAN CHAMBERS. "Rifting and the development of the Faeroe-Shetland Basin." Geological Society, London, Petroleum Geology Conference series 5, no. 1 (1999): 533–44. http://dx.doi.org/10.1144/0050533.

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7

Carr, A. D., and I. C. Scotchman. "Thermal history modelling in the southern Faroe–Shetland Basin." Petroleum Geoscience 9, no. 4 (October 2003): 333–45. http://dx.doi.org/10.1144/1354-079302-494.

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8

Solari, M. A., F. Hervé, J. Martinod, J. P. Le Roux, L. E. Ramírez, and C. Palacios. "Geotectonic evolution of the Bransfield Basin, Antarctic Peninsula: insights from analogue models." Antarctic Science 20, no. 2 (January 23, 2008): 185–96. http://dx.doi.org/10.1017/s095410200800093x.

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AbstractThe Bransfield Strait, located between the South Shetland Islands and the north-western end of the Antarctic Peninsula, is a back-arc basin transitional between rifting and spreading. We compiled a geomorphological structural map of the Bransfield Basin combining published data and the interpretation of bathymetric images. Several analogue experiments reproducing the interaction between the Scotia, Antarctic, and Phoenix plates were carried out. The fault configuration observed in the geomorphological structural map was well reproduced by one of these analogue models. The results suggest the establishment of a transpressional regime to the west of the southern segment of the Shackleton Fracture Zone and a transtensional regime to the south-west of the South Scotia Ridge by at least c. 7 Ma. A probable mechanism for the opening of the Bransfield Basin requires two processes: 1) Significant transtensional effects in the Bransfield Basin caused by the configuration and drift vector of the Scotia Plate after the activity of the West Scotia Ridge ceased at c. 7 Ma. 2) Roll-back of the Phoenix Plate under the South Shetland Islands after cessation of spreading activity of the Phoenix Ridge at 3.3 ± 0.2 Ma, causing the north-westward migration of the South Shetland Trench.

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9

Pearson, M. J. "Clay mineral distribution and provenance in Mesozoic and Tertiary mudrocks of the Moray Firth and northern North Sea." Clay Minerals 25, no. 4 (December 1990): 519–41. http://dx.doi.org/10.1180/claymin.1990.025.4.10.

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AbstractClay mineral abundances in Mesozoic and Tertiary argillaceous strata from 15 exploration wells in the Inner and Outer Moray Firth, Viking Graben and East Shetland Basins of the northern North Sea have been determined in <0·2 µm fractions of cuttings samples. The clay assemblages of more deeply-buried samples cannot be unambiguously related to sedimentary input because of the diagenetic overprint which may account for much of the chlorite and related interstratified minerals. Other sediments, discussed on a regional basis and related to the geological history of the basins, are interpreted in terms of clay mineral provenance and control by climate, tectonic and volcanic activity. The distribution of illite-smectite can often be related to volcanic activity both in the Forties area during the M. Jurassic, and on the NE Atlantic continental margin during the U. Cretaceous-Early Tertiary which affected the North Sea more widely and left a prominent record in the Viking Graben and East Shetland Basin. Kaolinite associated with lignite-bearing sediments in the Outer Moray Firth Basin was probably derived by alteration of volcanic material in lagoonal or deltaic environments. Some U. Jurassic and L. Cretaceous sediments of the Inner Moray Basin are rich in illite-smectite, the origin of which is not clear.

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10

Fliedner, Moritz M., and Robert S. White. "Depth imaging of basalt flows in the Faeroe-Shetland Basin." Geophysical Journal International 152, no. 2 (February 2003): 353–71. http://dx.doi.org/10.1046/j.1365-246x.2003.01833.x.

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11

BOOTH, J., T. SWIECICKI, and P. WILCOCKSON. "The tectono-stratigraphy of the Solan Basin, west of Shetland." Geological Society, London, Petroleum Geology Conference series 4, no. 1 (1993): 987–98. http://dx.doi.org/10.1144/0040987.

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12

LEE, M. J., and Y. J. HWANG. "Tectonic evolution and structural styles of the East Shetland Basin." Geological Society, London, Petroleum Geology Conference series 4, no. 1 (1993): 1137–49. http://dx.doi.org/10.1144/0041137.

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13

HERRIES, R., R. PODDUBIUK, and P. WILCOCKSON. "Solan, Strathmore and the back basin play, West of Shetland." Geological Society, London, Petroleum Geology Conference series 5, no. 1 (1999): 693–712. http://dx.doi.org/10.1144/0050693.

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14

BARTON, P. J., S. HUGHES, C. ZELT, and R. MASOTTI. "Exploring the Shetland–Faeroes Basin using wide-angle seismic technology." Geological Society, London, Petroleum Geology Conference series 5, no. 1 (1999): 1253. http://dx.doi.org/10.1144/0051253.

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15

SELL, I., G. POUPEAU, J. M. GONZÁLEZ-CASADO, and J. LÓPEZ-MARTÍNEZ. "A fission track thermochronological study of King George and Livingston islands, South Shetland Islands (West Antarctica)." Antarctic Science 16, no. 2 (June 2004): 191–97. http://dx.doi.org/10.1017/s0954102004001907.

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This paper reports the dating of apatite fission tracks in eleven rock samples from the South Shetland Archipelago, an island arc located to the north-west of the Antarctic Peninsula. Apatites from Livingston Island were dated as belonging to the Oligocene (25.8 Ma: metasediments, Miers Bluff Formation, Hurd Peninsula) through to the Miocene (18.8 Ma: tonalites, Barnard Point). Those from King George Island were slightly older, belonging to the Early Oligocene (32.5 Ma: granodiorites, Barton Peninsula). Towards the back-arc basin (Bransfield Basin), the apatite appears to be younger. This allows an opening rate of approximately 1.1 km Ma−1 (during the Miocene–Oligocene interval) to be calculated for Bransfield Basin. Optimization of the apatite data suggests cooling to 100 ± 10°C was coeval with the end of the main magmatic event in the South Shetland Arc (Oligocene), and indicates slightly different tectonic-exhumation histories for the different tectonic blocks.

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16

Clark, J., C. Parry, M. Rowlands, A. Tessier, and D. Mazzuchelli. "The Glenlivet Field, Block 214/30a, UK Atlantic Margin." Geological Society, London, Memoirs 52, no. 1 (2020): 958–66. http://dx.doi.org/10.1144/m52-2018-24.

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AbstractThe Glenlivet Field, located in Block 214/30a within the Faroe–Shetland Basin, was put on production in August 2017. It lies approximately 70 km NW of the Shetland Islands, in a water depth of c. 440 m. The development consists of two subsea wells that produce gas condensate from the Paleocene Vaila Formation, which comprises deep-water turbidite deposits with excellent petrophysical properties. It is part of a joint development scheme along with the Edradour Field that sees the commingled multiphase production transported to the Shetland Gas Plant via tie-back to the pre-existing Laggan–Tormore flowlines. Glenlivet is operated by Total E&P UK Ltd under the P1195 licence since September 2014 with Ineos E&P (UK) Ltd and SSE E&P UK Ltd as partners.

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17

Clark, J., P. Matthews, C. Parry, M. Rowlands, and A. Tessier. "The Laggan and Tormore fields, Blocks 206/1 and 205/5, UK Atlantic Margin." Geological Society, London, Memoirs 52, no. 1 (2020): 967–79. http://dx.doi.org/10.1144/m52-2018-25.

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AbstractThe Laggan and Tormore fields are found within the Flett sub-basin of the Faroe–Shetland Basin. Situated 120 km west of the Shetland Islands in 600 m water depth, they are part of the deepest subsea development in the UK to date with a 143 km subsea tie-back to onshore facilities.The reservoirs are found within the T35 biostratigraphic sequence of the Paleocene Vaila Formation and comprise sand-rich turbiditic channelized lobes with good reservoir properties, separated by metric to decimetric shale packages. Laggan is a gas-condensate field, whereas Tormore fluid is a richer gas with a saturated oil rim. Seismic reservoir characterization is a key to the field development where differentiation of fluid type proved challenging. Both fields came on stream in 2016 as part of the Greater Laggan area development scheme.

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18

Spray, John G. "Thrust-related metamorphism beneath the Shetland Islands oceanic fragment, northeast Scotland." Canadian Journal of Earth Sciences 25, no. 11 (November 1, 1988): 1760–76. http://dx.doi.org/10.1139/e88-167.

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A ≤400 m thick metamorphic sequence showing thermal inversion is present beneath a dismembered ultrabasic–basic complex in the Shetland Islands of northeast Scotland. The metamorphic grade changes from upper amphibolite facies in metabasites at the top of the sequence to low greenschist facies in metasediments at the base. Garnet–clinopyroxene thermometry yields temperatures of ~ 750 °C (at 300 MPa) for the highest grade assemblage. There is no evidence for high pressures of metamorphism, and maximum overburden may never have exceeded the original thickness of the overlying ultrabasic–basic complex, which is estimated to have been ~ 10 km.The internal structure and field relations of the ultrabasic–basic complex reveal that it is a displaced fragment of oceanic crust and upper mantle of Ordovician age. The chemistry of its basic lithologies suggests low-K tholeiite, suprasubduction zone, pre-arc affinities. In contrast, the underlying meteamorphic sequence possesses a mid-ocean ridge basalt (MORB) signature.Four K–Ar age determinations from amphibole mineral separates of the metamorphic sequence range from 479 ± 6 to 465 ± 6 Ma. The highest age is interpreted as the date of the onset of metamorphic sole formation and the initial tectonic displacement of the oceanic fragment.It is concluded that the metamorphic sequence was generated during intraoceanic thrusting during the destruction of a young, marginal oceanic basin located between a continental margin and the ocean lithosphère of Iapetus. Certain MORB lithologies were metamorphosed and transferred to the marginal basin hanging wall during the subduction of Iapetus. Apparent thermal inversion was caused during overthrusting by the gradual underplating of the hanging wall in close proximity to a suprasubduction zone spreading centre.

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19

Watson, Peter. "Industry – inputs to the environment." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 103 (1995): 21–29. http://dx.doi.org/10.1017/s0269727000005911.

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Sullom Voe Terminal has been in operation since November 1978, processing crude oil from the East Shetland Basin. Gas processing was initiated in April 1981, with full LPG production commencing in May 1982. The terminal is operated by BP Exploration, while port operations are controlled by Shetland Islands Council. This paper will summarise both terminal and port operations, to highlight those areas which involve a discharge or emission to the environment. Variation of the discharges with time will also be indicated to provide a background against which the results of the environmental monitoring programme can be set.

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20

Hansen, Bogi, Turið Poulsen, Karin Margretha Húsgarð Larsen, Hjálmar Hátún, Svein Østerhus, Elin Darelius, Barbara Berx, Detlef Quadfasel, and Kerstin Jochumsen. "Atlantic water flow through the Faroese Channels." Ocean Science 13, no. 6 (November 13, 2017): 873–88. http://dx.doi.org/10.5194/os-13-873-2017.

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Abstract. Through the Faroese Channels – the collective name for a system of channels linking the Faroe–Shetland Channel, Wyville Thomson Basin, and Faroe Bank Channel – there is a deep flow of cold waters from Arctic regions that exit the system as overflow through the Faroe Bank Channel and across the Wyville Thomson Ridge. The upper layers, in contrast, are dominated by warm, saline water masses from the southwest, termed Atlantic water. In spite of intensive research over more than a century, there are still open questions on the passage of these waters through the system with conflicting views in recent literature. Of special note is the suggestion that there is a flow of Atlantic water from the Faroe–Shetland Channel through the Faroe Bank Channel, which circles the Faroes over the slope region in a clockwise direction. Here, we combine the observational evidence from ship-borne hydrography, moored current measurements, surface drifter tracks, and satellite altimetry to address these questions and propose a general scheme for the Atlantic water flow through this channel system. We find no evidence for a continuous flow of Atlantic water from the Faroe–Shetland Channel to the Faroe Bank Channel over the Faroese slope. Rather, the southwestward-flowing water over the Faroese slope of the Faroe–Shetland Channel is totally recirculated within the combined area of the Faroe–Shetland Channel and Wyville Thomson Basin, except possibly for a small release in the form of eddies. This does not exclude a possible westward flow over the southern tip of the Faroe Shelf, but even including that, we estimate that the average volume transport of a Circum-Faroe Current does not exceed 0.5 Sv (1 Sv = 106 m3 s−1). Also, there seems to be a persistent flow of Atlantic water from the western part of the Faroe Bank Channel into the Faroe–Shetland Channel that joins the Slope Current over the Scottish slope. These conclusions will affect potential impacts from offshore activities in the region and they imply that recently published observational estimates of the transport of warm water towards the Arctic obtained by different methods are incompatible.

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21

Fletcher, Rosie, Nick Kusznir, Alan Roberts, and Robert Hunsdale. "The formation of a failed continental breakup basin: The Cenozoic development of the Faroe-Shetland Basin." Basin Research 25, no. 5 (April 19, 2013): 532–53. http://dx.doi.org/10.1111/bre.12015.

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22

Clark, J., D. Mazzuchelli, M. Rowlands, N. Jebara, and C. Parry. "The Edradour Field, Block 206/4a, UK Atlantic Margin." Geological Society, London, Memoirs 52, no. 1 (2020): 952–57. http://dx.doi.org/10.1144/m52-2018-23.

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AbstractThe Edradour Field, located in Licence P1453 on Block 206/4a of the Faroe–Shetland Basin, was put on production in August 2017. It lies c. 50 km NW of the Shetland Islands in a water depth of c. 300 m, and consists of one subsea well that produces gas condensate from the Albian Black Sail Member of the Commodore Formation. It is part of a joint development scheme along with the Glenlivet Field that sees the commingled multiphase production transported to the Shetland Gas Plant via tieback to the pre-existing Laggan–Tormore flowlines. The Edradour single well development has reserves of 21 MMboe from a gas initially-in-place of 142 bcf. It is operated by Total E&P UK Ltd under the P1453 licence with Ineos E&P (UK) Ltd and SSE E&P UK Ltd as partners.

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23

Marshall, J. E. A. "Devonian miospores from Papa Stour, Shetland." Transactions of the Royal Society of Edinburgh: Earth Sciences 79, no. 1 (1988): 13–18. http://dx.doi.org/10.1017/s0263593300014073.

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ABSTRACTDevonian miospores have been discovered in the previously poorly dated Old Red Sandstone volcanic sequence of Papa Stour. They occur at two sites in minor sedimentary deposits between the lavas, and fossil fish remains are also present. The age range of the miospores is mid Eifelian to early Givetian, probably more specifically late Eifelian and from a position close to the Achanarras horizon. This allows a correlation of the Papa Stour volcanic sequence with that of the Upper Stromness Flags of Orkney and not the tuffaceous horizons in the Eday Sandstones. The good preservation and composition of the miospores indicate a close similarity to other Orcadian Basin sediments and support the view that the Old Red Sandstone sequences W of the Melby Fault have affinities with the Orkney and Caithness successions rather than with Shetland. The age of the volcanic sequence also provides a valuable datum point for plate tectonic models based on the geochemistry of Old Red Sandstone lavas.

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24

ANDERTON, R. "Sedimentation and basin evolution in the Paleogene of the Northern North Sea and Faeroe–Shetland basins." Geological Society, London, Petroleum Geology Conference series 4, no. 1 (1993): 31. http://dx.doi.org/10.1144/0040031.

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25

Heath, Michael R., Peter R. Boyle, Astthor Gislason, William S. C. Gurney, Stephen J. Hay, Erica J. H. Head, Steven Holmes, et al. "Comparative ecology of over-wintering Calanus finmarchicus in the northern North Atlantic, and implications for life-cycle patterns." ICES Journal of Marine Science 61, no. 4 (January 1, 2004): 698–708. http://dx.doi.org/10.1016/j.icesjms.2004.03.013.

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Abstract Data from plankton net and Optical Plankton Counter sampling during 12 winter cruises between 1994 and 2002 have been used to derive a multi-annual composite 3-D distribution of the abundance of over-wintering Calanus finmarchicus in a swath across the North Atlantic from Labrador to Norway. Dense concentrations occurred in the Labrador Sea, northern Irminger Basin, northern Iceland Basin, eastern Norwegian Sea, Faroe–Shetland Channel, and in the Norwegian Trench of the North Sea. A model of buoyancy regulation in C. finmarchicus was used to derive the lipid content implied by the in situ temperature and salinity at over-wintering depths, assuming neutral buoyancy. The Faroe–Shetland Channel and eastern Norwegian Sea emerged as having the highest water column-integrated abundances of copepodites, the lowest over-wintering temperature, and the highest implied lipid content. The results are discussed in the context of spatial persistence of populations, seasonal patterns of abundance, and relationships between over-wintering and lipid accumulation in the surface waters.

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26

Scotchman, Iain C., Anthony G. Doré, and Anthony M. Spencer. "Petroleum systems and results of exploration on the Atlantic margins of the UK, Faroes & Ireland: what have we learnt?" Geological Society, London, Petroleum Geology Conference series 8, no. 1 (October 27, 2016): 187–97. http://dx.doi.org/10.1144/pgc8.14.

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AbstractThe exploratory drilling of 200 wildcat wells along the NE Atlantic margin has yielded 30 finds with total discovered resources of c. 4.1×109 barrels of oil equivalent (BOE). Exploration has been highly concentrated in specific regions. Only 32 of 144 quadrants have been drilled, with only one prolific province discovered – the Faroe–Shetland Basin, where 23 finds have resources totalling c. 3.7×109 BOE. Along the margin, the pattern of discoveries can best be assessed in terms of petroleum systems. The Faroe–Shetland finds belong to an Upper Jurassic petroleum system. On the east flank of the Rockall Basin, the Benbecula gas and the Dooish condensate/gas discoveries have proven the existence of a petroleum system of unknown source – probably Upper Jurassic. The Corrib gas field in the Slyne Basin is evidence of a Carboniferous petroleum system. The three finds in the northern Porcupine Basin are from Upper Jurassic source rocks; in the south, the Dunquin well (44/23-1) suggests the presence of a petroleum system there, but of unknown source. This pattern of petroleum systems can be explained by considering the distribution of Jurassic source rocks related to the break-up of Pangaea and marine inundations of the resulting basins. The prolific synrift marine Upper Jurassic source rock (of the Northern North Sea) was not developed throughout the pre-Atlantic Ocean break-up basin system west of Britain and Ireland. Instead, lacustrine–fluvio-deltaic–marginal marine shales of predominantly Late Jurassic age are the main source rocks and have generated oils throughout the region. The structural position, in particular relating to the subsequent Early Cretaceous hyperextension adjacent to the continental margin, is critical in determining where this Upper Jurassic petroleum system will be most effective.

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Fliedner, Moritz M., and Robert S. White. "Sub-basalt imaging in the Faeroe-Shetland Basin with large-offset data." First Break 19, no. 5 (May 2001): 247–52. http://dx.doi.org/10.1046/j.0263-5046.2001.00156.x.

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28

White, Robert S., John R. Smallwood, Moritz M. Fliedner, Brian Boslaugh, Jenny Maresh, and Juergen Fruehn. "Imaging and regional distribution of basalt flows in the Faeroe-Shetland Basin." Geophysical Prospecting 51, no. 3 (May 2003): 215–31. http://dx.doi.org/10.1046/j.1365-2478.2003.00364.x.

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29

Champion, M. E. Shaw, N. J. White, S. M. Jones, and J. P. B. Lovell. "Quantifying transient mantle convective uplift: An example from the Faroe-Shetland basin." Tectonics 27, no. 1 (January 9, 2008): n/a. http://dx.doi.org/10.1029/2007tc002106.

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30

Crawford, Wayne C., and Satish C. Singh. "Sediment shear properties from seafloor compliance measurements: Faroes-Shetland basin case study." Geophysical Prospecting 56, no. 3 (May 2008): 313–25. http://dx.doi.org/10.1111/j.1365-2478.2007.00672.x.

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31

Bell, Brian, and Helen Butcher. "On the emplacement of sill complexes: evidence from the Faroe-Shetland Basin." Geological Society, London, Special Publications 197, no. 1 (2002): 307–29. http://dx.doi.org/10.1144/gsl.sp.2002.197.01.12.

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32

Larsen, M., T. Rasmussen, and L. Hjelm. "Cretaceous revisited: exploring the syn-rift play of the Faroe–Shetland Basin." Geological Society, London, Petroleum Geology Conference series 7, no. 1 (2010): 953–62. http://dx.doi.org/10.1144/0070953.

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33

Morgan, Richard, and Colm Murphy. "The Use of Potential Fields in the Search for Potential Fields in the Faroe-Shetland Area." SPE Reservoir Evaluation & Engineering 1, no. 05 (October 1, 1998): 476–84. http://dx.doi.org/10.2118/51828-pa.

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This paper (SPE 51828) was revised for publication from paper SPE 38503, first presented at the 1997 SPE Offshore Europe Conference, Aberdeen, 9-12 September. Original manuscript received for review 9 September 1997. Revised manuscript received 6 July 1998. Paper peer approved 10 July 1998. Summary Fundamental geological and environmental differences exist between the basins of the North Sea and the basins of the northwest European continental margin, and strategies for success in the North Sea have not necessarily transferred directly to the continental margin. As a result, exploration outcomes to date have been somewhat disappointing, with one or two notable exceptions. Furthermore, a change in the approach to acreage evaluation places increasing levels of reliance on seismic data, specifically three-dimensional (3D) data, to tie down prospects before drilling. This approach focuses down rapidly to the prospect scale, and, although allowing detailed analysis of target structures, there is a risk of creating a gap in understanding between the geological processes observed at the basin scale and those at the prospect scale. A strategy to bridge this gap has drawn upon the wider family of geophysical data, namely gravity and magnetic data, in conjunction with a conventional, broad, regional grid of two-dimensional (2D) seismic data. These data have been worked together to construct a basin scale framework into which 3D seismic data acquisition can be planned and the results interpreted.At the regional scale, satellite-derived gravity coverage has enabled the removal of the effects of Tertiary seafloor spreading, allowing structures on the northwest European continental margin to be viewed in context with the geology of East Greenland.At the basin scale, basinal elements have been identified and correlated among seismic, gravity, and magnetic data. Controlling faults have been mapped, and the timing of basin formation inferred from trend and geometry, with implications for source rock distribution.At the license block scale, the segmentation of basin margins has been revealed by high spatial resolution magnetic data with implications for both trapping potential and the control of sediment supply into the basins. The fusion of interpretations made from the different types of geophysical data creates a scale of observation range that stretches from tectonic plates to prospective structures. The resulting geological framework has sufficient scale overlap to relate immediately to the level of detail available from 3D seismic data. Moreover, the broader perspective may ensure that those seismic data are acquired in the correct part of the basin in the first place. P. 476

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Zemko, Karol, Krzysztof Pabis, Jacek Siciński, and Magdalena Błażewicz. "New records of isopod species of the Antarctic Specially Managed Area No. 1, Admiralty Bay, South Shetland Islands." Polish Polar Research 38, no. 3 (September 1, 2017): 409–19. http://dx.doi.org/10.1515/popore-2017-0017.

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AbstractAdmiralty Bay (King George Island) is an Antarctic Specially Managed Area and one the most thoroughly studied small-scale marine basins in the Southern Ocean. Our study provides new data on the isopod fauna in this glacially affected fjord. Twelve species of isopods were recorded in this basin for the first time. Six of them were found for the first time in the region of the South Shetland Islands. The highest number of species new for Admiralty Bay were found in the families Munnopsidae (4 species) and Munnidae (3 species).

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35

Barclay, A. H., W. S. D. Wilcock, and J. M. Ibáñez. "Bathymetric constraints on the tectonic and volcanic evolution of Deception Island Volcano, South Shetland Islands." Antarctic Science 21, no. 2 (December 11, 2008): 153–67. http://dx.doi.org/10.1017/s0954102008001673.

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AbstractDeception Island is the largest volcano in the actively extending Bransfield Basin, a marginal basin situated behind the extinct South Shetland Islands arc. Deception Island has been well studied but its submerged flanks have not. A multibeam bathymetry survey was conducted around the island in 2005. Data from the flooded caldera show no evidence for recent localized resurgence. The gently-sloped bottom of the caldera basin is consistent with either a broad zone of resurgence on its east side associated with trap door deformation or with higher rates of sediment supply from the east side of the island. Around the island, numerous tectonic and volcanic features on the volcano's east and west flanks are nearly all aligned with the regional strike (~060°) of the Bransfield rift and there is very little evidence for the other fault populations that have been identified on the island. We infer that models that link the ongoing tectonic development of Deception Island to complex regional tectonics are less likely than models in which the dominant regional extension in Bransfield Strait is modulated by the local effects of caldera collapse and possibly a small right-lateral transfer zone offsetting the primary extension axes in the Central and Western Bransfield Basins.

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Hughes, Stephen, Penny J. Barton, and David Harrison. "Exploration in the Shetland‐Faeroe Basin using densely spaced arrays of ocean‐bottom seismometers." GEOPHYSICS 63, no. 2 (March 1998): 490–501. http://dx.doi.org/10.1190/1.1444350.

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Recent exploration activity in the peripheral regions of the Shetland‐Faeroe Basin, offshore northwest Scotland, has led to the discovery of some of the largest oil reserves on the United Kingdom (UK) continental shelf. We present results from two ocean‐bottom seismometer profiles acquired by Mobil North Sea Ltd. across the center of the Shetland‐Faeroe Basin. These data provide a powerful tool for delineating long‐wavelength velocity variations and thus have potential for reducing the nonuniqueness associated with conventional seismic exploration methods. Analysis of the first‐arrival traveltime data using both forward and inverse ray‐based techniques produces a well constrained velocity‐depth model of the basin fill. We estimate that the uncertainty in the velocity structure is ±5% from a series of trial and error perturbations applied to the final models. The velocity structure of the Faeroe Basin has three principal layers: (1) a near‐surface layer with velocities in the range 1.6 to 2.2 km/s, (2) a 3.0–3.2 km/s layer which is characterized by a northwards structural pinch out in the center of the basin, and (3) a deeper laterally heterogeneous layer with velocities in the range 3.8 to 4.2 km/s. In the northwestern portion of the basin, a high velocity (5.0 km/s) basaltic layer is imaged dipping toward the southeast at a depth of 2–3 km. The basement is mapped at a depth of 7–9 km in the center of the basin. Gravity modeling provides independent corroboration of our models through the application of a velocity‐density relationship obtained from a synthesis of physical property measurements. Reflections from the Moho indicate a crustal thickness of 18 ± 3 km, suggesting that the basin is underlain by highly attenuated continental crust, but the velocities in the basement are closer to those of the Faeroe Islands basalts than the expected Lewisian gneiss, suggesting that it may be highly intruded.

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Schofield, Nick, and David W. Jolley. "Development of intra-basaltic lava-field drainage systems within the Faroe–Shetland Basin." Petroleum Geoscience 19, no. 3 (July 16, 2013): 273–88. http://dx.doi.org/10.1144/petgeo2012-061.

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38

Watson, Douglas, Nick Schofield, David Jolley, Stuart Archer, Alexander J. Finlay, Niall Mark, Jonathon Hardman, and Timothy Watton. "Stratigraphic overview of Palaeogene tuffs in the Faroe–Shetland Basin, NE Atlantic Margin." Journal of the Geological Society 174, no. 4 (March 21, 2017): 627–45. http://dx.doi.org/10.1144/jgs2016-132.

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39

NAYLOR, P. H., B. R. BELL, D. W. JOLLEY, P. DURNALL, and R. FREDSTED. "Palaeogene magmatism in the Faeroe–Shetland Basin: influences on uplift history and sedimentation." Geological Society, London, Petroleum Geology Conference series 5, no. 1 (1999): 545–58. http://dx.doi.org/10.1144/0050545.

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40

Haszeldine, R. S., J. D. Ritchie, and K. Hitchen. "Seismic and well evidence for the early development of the Faeroe–Shetland Basin." Scottish Journal of Geology 23, no. 3 (February 1987): 283–300. http://dx.doi.org/10.1144/sjg23030283.

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41

Ritchie, J. Derek, Howard Johnson, Martyn F. Quinn, and Robert W. Gatliff. "The effects of Cenozoic compression within the Faroe-Shetland Basin and adjacent areas." Geological Society, London, Special Publications 306, no. 1 (2008): 121–36. http://dx.doi.org/10.1144/sp306.5.

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42

KANARIS-SOTIRIOU, RAYMOND, and FERGUS G. F. GIBB. "Short Paper: Plagiogranitic differentiates in MORB-type sills of the Faeroe–Shetland Basin." Journal of the Geological Society 146, no. 4 (July 1989): 607–10. http://dx.doi.org/10.1144/gsjgs.146.4.0607.

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43

Turrell, W. "Hydrography of the East Shetland Basin in relation to decadal North Sea variability." ICES Journal of Marine Science 53, no. 6 (December 1996): 899–916. http://dx.doi.org/10.1006/jmsc.1996.0112.

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44

Warrender, John. "The Murchison Field, Block 211/19a, UK North Sea." Geological Society, London, Memoirs 14, no. 1 (1991): 165–73. http://dx.doi.org/10.1144/gsl.mem.1991.014.01.21.

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AbstractThe Murchison oil field forms part of the Brent oil province in the East Shetland Basin, northern North Sea. The field, which straddles the UK-Norway international boundary, was discovered in 1975 and began production with Conoco (UK) Ltd as Operator, in 1980. Like many oil accumulations in the East Shetland Basin the trap consists of a northwesterly dipping rotated fault block of Jurassic-Triassic age sourced and sealed by unconformable Upper Jurassic shales. The productive reservoir consists of Middle Jurassic Brent Group sandstones which represent the south to north progradation of a wave/tide influenced delta system. The Brent Group on Murchison has an average thickness of 425 ft with average porosities of 22% and permeabilities in the 500-1000 md range in producing zones. The maximum hydrocarbon column thickness is approximately 600 ft. The oil is undersaturated and no gas cap is present. Recoverable reserves are 340 MMBBL from a total oil in place figure of 790 MMBBL. Oil production which is via a single steel jacket platform peaked at 127 000 BOPD in 1983 and currently averages 45 000 BOPD. Economic field life is expected to be at least 20 years.The Murchison Field is located in the East Shetland Basin, northern North Sea at approximate latitude 61° 23' N, longitude 1° 43.5' E, 120 miles northeast of the Shetland Islands (Fig. 1). The field straddles the UK-Norway international boundary with the greater portion in the UK Block 21 l/19a and the lesser portion in Norway Block 33/9. Water depth is -512 ft BMSL. In the context of the North Sea the field is of medium size with an areal closure of approximately 7 square miles and contains 790 million barrels of oil in place. The productive reservoir consists of coastal deltaic sandstones of the Middle Jurassic Brent Group which lie between the marine shales of the Lower Jurassic Dunlin Group and the marine, organic-rich shales of the Upper Jurassic Humber Group. The trap is structural comprising a single, northwesterly dipping rotated fault block which has been sourced and sealed by the overlying Upper Jurassic shales. The field is named after the Scottish geologist Sir Roderick Impey Murchison (1792-1871), who is best known for his contribution to Palaeozoic stratigraphy.

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45

Fyfe, Laura-Jane C., Nick Schofield, Simon Holford, Adrian Hartley, Adrian Heafford, David Muirhead, and John Howell. "Geology and petroleum prospectivity of the Sea of Hebrides Basin and Minch Basin, offshore NW Scotland." Petroleum Geoscience 27, no. 4 (May 19, 2021): petgeo2021–003. http://dx.doi.org/10.1144/petgeo2021-003.

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The Sea of Hebrides Basin and Minch Basin are late Paleozoic–Mesozoic rift basins located to the NW of the Scottish mainland. The basins were the target of small-scale petroleum exploration from the late 1960s to the early 1990s, with a total of three wells drilled within the two basins between 1989 and 1991. Although no commercially viable petroleum discoveries were made, numerous petroleum shows were identified within both basins, including a gas show within the Upper Glen 1 well in Lower Jurassic limestones. Organic-rich shales have been identified throughout the Jurassic succession within the Sea of Hebrides Basin, with one Middle Jurassic (Bajocian–Bathonian) shale exhibiting a total organic carbon content of up to 15 wt%. The focus of this study is to review the historical petroleum exploration within these basins, and to evaluate whether the conclusions drawn in the early 1990s of a lack of prospectivity remains the case. This was undertaken by analysis of seismic reflection data, gravity and aeromagnetic data, and sedimentological data from both onshore and offshore wells, boreholes and previously published studies. The key findings from our study suggest that there is a low probability of commercially sized petroleum accumulations within either the Sea of Hebrides Basin or the Minch Basin. Ineffective source rocks, likely to be due to low maturities (due to lack of burial) and the fact that the encountered Jurassic and Permian–Triassic reservoirs are of poor quality (low porosity and permeability), has led to our interpretation of future exploration being high risk, with any potential accumulations being small in size. While petroleum accumulations are unlikely within the basin, applying the knowledge obtained from this study could provide additional datasets and insight into petroleum exploration within other NE Atlantic margin basins, such as the Rockall Trough and the Faroe–Shetland Basin.

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46

Duncan, Louise J., C. J. Dennehy, P. M. Ablard, and D. W. Wallis. "The Rosebank Field, Blocks 213/27a, 213/26b, 205/1a and 205/2a, UK Atlantic Margin." Geological Society, London, Memoirs 52, no. 1 (2020): 980–89. http://dx.doi.org/10.1144/m52-2018-42.

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AbstractThe Rosebank Field is located primarily in Block 213/27a in the Faroe–Shetland Basin, c. 130 km west of the Shetland Islands in water depths of c. 1100 m (3600 ft). Hydrocarbons are trapped within an elongate, SW–NE-trending four-way anticlinal structure. The principal Colsay Sandstone Member reservoir consists of several vertically stacked, Late Paleocene to Early Eocene fluvial and deltaic reservoirs separated by volcanic sequences. Well log and core data indicate that reservoir quality is high, with porosities in the range of 19–23% and average permeability of c. 3 D. Oil quality is also high, with average oil gravity of 37°API and in-situ viscosity of c. 1 cP at a mean reservoir temperature of 175°F. The field holds a substantial resource and is currently under evaluation for development.

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47

Mudge, D. C., and J. P. Bujak. "Biostratigraphic evidence for evolving palaeoenvironments in the Lower Paleogene of the Faeroe–Shetland Basin." Marine and Petroleum Geology 18, no. 5 (May 2001): 577–90. http://dx.doi.org/10.1016/s0264-8172(00)00074-x.

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48

Ritchie, J. D., H. Johnson, and G. S. Kimbell. "The nature and age of Cenozoic contractional deformation within the NE Faroe–Shetland Basin." Marine and Petroleum Geology 20, no. 5 (May 2003): 399–409. http://dx.doi.org/10.1016/s0264-8172(03)00075-8.

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49

Taylor, Frederick W., Michael G. Bevis, Ian W. D. Dalziel, Robert Smalley, Cliff Frohlich, Eric Kendrick, James Foster, David Phillips, and Krishnavikas Gudipati. "Kinematics and segmentation of the South Shetland Islands-Bransfield basin system, northern Antarctic Peninsula." Geochemistry, Geophysics, Geosystems 9, no. 4 (April 2008): n/a. http://dx.doi.org/10.1029/2007gc001873.

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50

Morton, Andrew C., J. Douglas Boyd, and David F. Ewen. "Evolution of Paleocene sediment dispersal systems in the Foinaven Sub-basin, west of Shetland." Geological Society, London, Special Publications 197, no. 1 (2002): 69–93. http://dx.doi.org/10.1144/gsl.sp.2002.197.01.04.

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