
%0 Journal Article
%A Bird, K. J. 
%A Coleman, W. F. 
%A Crocker, H. 
%T THE DEPOSITIONAL HISTORY OF A PORTION OF THE NORTH PERTH BASIN&#x2014;A SINGLE WELL DIPMETER ANALYSIS
%J The APPEA Journal
%D 1971/06/30
%V 11
%N 1
%P 90-94
%K 
%R https://doi.org/10.1071/AJ70016
%U https://www.publish.csiro.au/paper/AJ70016 
%X Four-arm dipmeter interpretation has been integrated with other wireline logs, lithologic and palaeontologic data, and regional geology to arrive at a history of the deposition in a portion of the North Perth Basin.The Permian sediments were deposited in a moderate to low energy, paralic to marine environment. They were unconformably overlain by a thin transgressive Lower Triassic sand and deepwater marine shale. The Middle Triassic sediments were deposited as a regressive marine sequence under the influence of a strong southwesterly uplift, and culminated in piedmont talus deposits of Upper Triassic age.In the Lower Jurassic this area evolved through a flood-plain environment to a paralic environment with a northeast-southwest oriented coastline and a northern source area. During the Middle Jurassic gentle crustal movements, coupled with an increasingly active northern and eastern source area, resulted in several cycles of nearshore deposition, and finally a marine transgression.Subsequent violent tectonic uplift to the east in the Upper Jurassic produced massive first generation sands which were deposited in a mainly continental environment. 
