作者: Jake M. Hancock
DOI: 10.1016/0195-6671(91)90037-D
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摘要: Abstract Geological charts for various purposes, e.g. that by Haq, Hardenbol & Vail (1987) on Mesozoic and Cenozoic chronostratigraphy cycles of sea-level change, quote zonal schemes the Cretaceous system which give a false impression accuracy; they can be applied all over world, or at least throughout either boreal realm tethyan realm. In this paper an attempt is made to ammonite-zonations each stage system, also state geographical limitations scheme. Particular attention tto definition base stage. Some 26 41 zones are suggested Lower some 22 55 Upper Cretaceous.