Publication Name: The Canning Basin, W.A.
Authors: Hashem Etminan, Ian B. Lambert, Ian Buchhorn, Surender Chaku and Geoff C. Murphy
Date Published: December 1984
Number of Pages: 18
Reference Type: Book Section
Abstract:
Wide-ranging research is being undertaken on the Devonian carbonate complexes of the Lennard Shelf, at the northern margin of the Canning Basin. This work is aimed at obtaining a detailed understanding of the processes involved in reef diagenesis and formation of Pb-Zn mineralisation.Preliminary results imply that the early diagenetic carbonate cements are largely of marine origin. Later diagenetic carbonates, including those intimately associated with Pb-Zn mineralisation, formed at temperatures of 45?C to l10?C from fluids of widely varying salinities, some of which contained minor amounts of hydrocarbons. Stable isotopic data imply that there were different sources of sulfur for the different deposits, and that iron sulfides formed separately from galena and sphalerite.