John A. Goff, Daniel J. Fornari, James R. Cochran, Christopher Keeley, Alberto Malinverno; Wilkes transform system and "nannoplate". Geology ; 21 (7): 623–626. doi: https://doi.org/10.1130/0091-7613(1993)021<0623:WTSAN>2.3.CO;2
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A recent Hydrosweep survey of the Wilkes transform system, the second-fastest-slipping transform on the mid-ocean ridge system, shows it to be a highly complex and continually evolving plate boundary. An area ∼50 km2 north of the eastern part of the Wilkes transform appears to be rotating counterclockwise in accordance with the theory of edge-driven microplate kinematics. We have called this region a "nannoplate" to distinguish it both as a separate small area of lithosphere between the Pacific and Nazca plates and as a smaller and less stable phenomenon than a microplate.