Global
Ocean Circulations
"Two
prominent global-scale ocean circulations, namely the thermohaline ‘conveyor
belt’ and the Antarctic Circumpolar Current, are difficult to treat on an
individual or partial basis.... These two circulations interact extensively with
each other, via both mean and eddy flows; and the two are jointly affected by
thermohaline and wind forcing. Thus many ocean regions and processes are
significantly interdependent, and use of a global model is advisable."
A.J.
Semtner and R.M. Chervin (1992)
D. Pen sketch by Sir Charles Cotton (1954), which summarizes the Cretaceo-Cenozoic (Notocene; Kaikoura Synthem) stratigraphy of the New Zealand microcontinent. The postrift sediment apron, shown here in a faulted inlier, comprises a Late Cretaceous–late Eocene marine transgressive sequence that passes from terrigenous inshore facies to offshore biopelagic radiolarian and nannoplankton oozes. By the early Oligocene, the New Zealand landmass was almost entirely submerged. Above the Amuri limestone, a thin succession of regressive terrigenous sediment dips into and is truncated against the Clarence Fault, the master structure along which the Inland Kaikoura Range was uplifted from the Early Miocene onward.