Approximate surface projection on Pacific Ocean of minor plates. Key:
  (red orange) New Hebrides Plate
  (brown) Balmoral Reef Plate - pale brown ? bordering block
  (orange) Conway Reef Plate
  (blue) Active subduction trenches
  (yellow) Spreading centers or rifts
Seismic context, is shown in a map in the article Vanuatu subduction zone. Mouse over shows feature names.[1][2][3]
Map of the Conway Reef Plate (as "Récif Conway") and its neighbouring plates (in French)

The Conway Reef Plate is a small tectonic plate (microplate) located in the south Pacific west of Fiji.[4] The western boundary is with the New Hebrides Plate while the eastern is with the Australian Plate. A short transform boundary also exists with the Balmoral Reef Plate. Much of the plate underlies the south central portion of the North Fiji Basin.

Within the North Fiji Basin it lies between the spreading centers of the Central Spreading Ridge on the west and the West Fiji Ridge on the east.[4] The plate is rotating counterclockwise with respect to all of its neighbours.[4]

The plate's existence was first modelled in 2003 by Bird.[4] Its boundaries and angular momentum were further defined in 2011 and 2018 with refinement of tectonic plate deformation and strain rate.[5][6]

The region is complex and may well have several other microplates or blocks.[3].

See also


  1. ^ Argus, Gordon & DeMets 2011, Table S2.
  2. ^ Covellone, Savage & Shen 2015, Fig 5 (a),(b).
  3. ^ a b Szitkar et al. 2022, 2. Regional geological context.
  4. ^ a b c d Bird 2003, 5.12. New Hebrides (NH), Conway Reef (CR), Balmoral Reef (BR), and Futuna (FT) Plates(?) in the New Hebrides-Fiji Orogen.
  5. ^ Argus, Gordon & DeMets 2011, P2, Tables 1-3, Table S2.
  6. ^ Wang et al. 2018, Table 1.


  • Bird, Peter (2003). "An updated digital model of plate boundaries". Geochemistry, Geophysics, Geosystems. 4 (3): 1027. Bibcode:2003GGG.....4.1027B. doi:10.1029/2001GC000252.
  • Argus, D. F.; Gordon, R. G.; DeMets, C. (2011). "Geologically current motion of 56 plates relative to the no‐net‐rotation reference frame". Geochemistry, Geophysics, Geosystems. 12 (11): 1–13. Bibcode:2011GGG....1211001A. doi:10.1029/2011GC003751. Retrieved 14 October 2023.
  • Wang, S; Yu, H; Zhang, Q; Zhao, Y (15 May 2018). "Absolute plate motions relative to deep mantle plumes". Earth and Planetary Science Letters. 490: 88-99. doi:10.1016/j.epsl.2018.03.021.
  • Covellone, BM; Savage, B; Shen, Y (15 June 2015). "Seismic wave speed structure of the Ontong Java Plateau". Earth and Planetary Science Letters. 420: 140–50. doi:10.1016/j.epsl.2015.03.033.
  • Szitkar, F; Dyment, J; Pelleter, E; Thomas, Y; Marsset, B; Ker, S; Fouquet, Y (2022). "Effusive and explosive volcanism on the northern Futuna Ridge, Lau Basin: A combined bathymetric, magnetic and seismic investigation". Journal of Volcanology and Geothermal Research. 431 (107646). doi:10.1016/j.jvolgeores.2022.107646.