Metallogeny of Oceanic-Type Crust
The volumes of magma generated per year along the current > 50,000 km long system of oceanic spreading ridges are estimated to exceed those generated on the remainder of the earth by about an order of magnitude (Menard, 1967). Oceanic crust and lithosphere are mainly formed at so-called mid-ocean ridge systems, but essentially similar oceanic crust is also generated during the earlier stages of continental separation (e.g., Red Sea), and during the formation of marginal basins behind some subduction-related arc systems (Karig, 1971).
KeywordsZinc Nickel Zirconium Zeolite Cretaceous
Unable to display preview. Download preview PDF.