Editing OR/18/013 The 'Cenozoic' 3D generic model

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===Overview of the forties submarine fan===
 
===Overview of the forties submarine fan===
 
The Forties Fan is made up of a huge number of interconnected amalgamated channels and interchannel areas that change laterally and vertically creating a very complex ‘plumbing system’. The Forties Fan can be regarded as an open system—though it is probably closed on its southeastern, southwestern and northeastern sides, it is probably open to the northwest. The Forties Fan is 300&nbsp;km by 100&nbsp;km (at its widest) (Davis et al., 2009<ref name="davis">DAVIS, C, HAUGHTON, P, MCCAFFREY, W, SCOTT, E, HOGG, N, and KITCHING, D. 2009. Character and distribution of
 
The Forties Fan is made up of a huge number of interconnected amalgamated channels and interchannel areas that change laterally and vertically creating a very complex ‘plumbing system’. The Forties Fan can be regarded as an open system—though it is probably closed on its southeastern, southwestern and northeastern sides, it is probably open to the northwest. The Forties Fan is 300&nbsp;km by 100&nbsp;km (at its widest) (Davis et al., 2009<ref name="davis">DAVIS, C, HAUGHTON, P, MCCAFFREY, W, SCOTT, E, HOGG, N, and KITCHING, D. 2009. Character and distribution of
hybrid sediment gravity flow deposits from the outer Forties Fan, Palaeocene Central North Sea, UKCS. ''Marine and Petroleum Geology, ''Vol. '''26''', pp. 1919–1939'''.</ref> note 260&nbsp;km by 80&nbsp;km) and trends NW–SE with sediment derived from the NW (Hempton et al., 2005<ref name="Hempton 2005">HEMPTON, M, MARSHALL, J, SADLER, S, HOGG, N, CHARLES, R, and HARVEY, C. 2005. Turbidite reservoirs of the Sele Formation, Central North Sea: geological challenges for improving production. ''In: ''Doré, A G, and Vining, B A. (eds) Petroleum Geology: North-West Europe and Global Perspectives — Proceedings of the 6th Petroleum Geology Conference, 449–459. ©Petroleum Geology Conferences Ltd. Published by the Geological Society, London.</ref>). Davis et al. (2009)<ref name="davis"></ref> note that it is a mixed mud-sand, ramp-fed system (''sensu ''Reading and Richards, 1994<ref name="reading">READING, H G, and RICHARDS, M. 1994. Turbidite systems in deep-water basin margins classified by grain size and feeder system. AAPG Bulletin '''78''', pp. 792–822.</ref>). However, Kunka et al. (2003)<ref name="kunka"></ref> state that a sand-rich ramp is more appropriate (''sensu ''Reading and Richards, 1994). Reading and Richards (1994)<ref name="reading"></ref> state sand-rich ramps are not always easy to distinguish from sandier members of mixed mud-sand, ramp-fed systems.
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hybrid sediment gravity flow deposits from the outer Forties Fan, Palaeocene Central North Sea, UKCS. ''Marine and Petroleum Geology, ''Vol. '''26''', pp. 1919–1939'''.</ref> note 260&nbsp;km by 80&nbsp;km) and trends NW–SE with sediment derived from the NW (Hempton et al., 2005<ref name="hempton">HEMPTON, M, MARSHALL, J, SADLER, S, HOGG, N, CHARLES, R, and HARVEY, C. 2005. Turbidite reservoirs of the Sele Formation, Central North Sea: geological challenges for improving production. ''In: ''Doré, A G, and Vining, B A. (eds) Petroleum Geology: North-West Europe and Global Perspectives — Proceedings of the 6th Petroleum Geology Conference, 449–459. ©Petroleum Geology Conferences Ltd. Published by the Geological Society, London.</ref>). Davis et al. (2009)<ref name="davis"></ref> note that it is a mixed mud-sand, ramp-fed system (''sensu ''Reading and Richards, 1994<ref name="reading">READING, H G, and RICHARDS, M. 1994. Turbidite systems in deep-water basin margins classified by grain size and feeder system. AAPG Bulletin '''78''', pp. 792–822.</ref>). However, Kunka et al. (2003)<ref name="kunka"></ref> state that a sand-rich ramp is more appropriate (''sensu ''Reading and Richards, 1994). Reading and Richards (1994)<ref name="reading"></ref> state sand-rich ramps are not always easy to distinguish from sandier members of mixed mud-sand, ramp-fed systems.
  
 
In general, to the SE, the reservoir will be characterised by:
 
In general, to the SE, the reservoir will be characterised by:

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