Author: Shubber B.
Organization: University of Adelaide, Australia, Ph.D. Thesis
Publication date: 1996
Mid- to high-latitude, shallow-water un-rimmed shelves and distally steepened ramps, as well as deep-water slopes in low-latitude regions, are typical cool-water carbonate settings. This study addresses the style and cause of cyclicity in the cool-water bryozoan-dominated Port Vincent Limestone. The diagenetic processes and environments in which the rocks had altered are interpreted. The Oligocene-Miocene Port Vincent Limestone is a friable, highly porous bryozoan calcarenite, punctuated by several, 0.5-1 m thick layers of hard bryozoan calcarenite. Based on lithological and petrophysical variations, the limestone is divided into three informal members: lower, middle and upper. Each member is composed of various bioclastic facies associations of predominantly calcitic mineralogy.
