Stratigraphic Correlation of Devonian Sequences of Northwestern Darling Basin, New South Wales, Australia

Abstract

The study is focused on the Northwestern part of the Darling Basin, and deals with a Stratigraphic correlation. This study involves correlation of the regional stratigraphy in the Darling Basin of western New South Wales that results from deformation of the Devonian sequences. The interpretation based on well logs and lihological data. Integrating well and lithological data to correlate the sequence stratigraphic units, using sequence stratigraphy approach are the main goals of this study. Analyses of lithostratigraphic units from well-logs and lithology data were used to develop a stratigraphic correlation of the northwest Darling Basin. The stratigraphic boundaries of the intervals were defined at marked changes in well-log characteristics and lithology information. Correlation of three wells in the northwestern part of Darling Basin allowed correlation and chronostratigraphic subdivision of Devonian sediments. The lithofacies of three wells Bancannia North-1, Bancanna South-1 and Jupiter-1 have been identified from northwest to southeast. The lithofacies dominated by sandstone and shale sediments mostly in Lower to Middle Devonian age, red sandstone, porous sandstone and shale lithofacies (red beds) of Middle to Upper Devonian sediments. Three stratigraphic units were identified based on well logs characteristics and lithofacies namely A, B and C.