This geological map at an original scale of 1/1000000 (here reduced)
was established by the "Unité de Géologie du Service des Mines et
de l'Energie de Nouvelle-Calédonie" in 1999. It was compiled by P.
Maurizot (1980 - 1986) using the work of J.P. Paris (1981) and D. Cluzel
(1990 - 1999).
The geological units are defined according to structural, dynamic, lithologic and historical characteristics.
D. Cluzel summarize as follows the events which have led to the current geology of New Caledonia. "Two super-cycles can be distinguished in the geological history of New Caledonia.- a "Rangitata" or ante-Senonian cycle which covers a period from Permian to Jurassic, characterized by the evolution of a group of intra-oceanic arcs and basins on Gondwana margin. - a "New Caledonian" cycle which covers a period from Cretaceous to Oligocene, corresponding, in the upper Cretaceous, with the scattering of these units when peri-Australian marginal basins opened (Tasman sea), then at their coalescence with intra-oceanic arcs, first at the Eocene in the Loyalty Arc and finally at their collision with the New-Hebrides islands arc."