Chemical investigations at the geological laboratory during the year 1959.

This record consists of a collection of minor reports completed by the petrographic and mineragraphic sections of the Geological Laboratory during the half-yearly period January to June 1960

This Record consists of a collection of reports completed by the petrographic and mineragraphic section of the Geological Laboratory during the period October to December, 1957.

This record describes a detailed ground magnetic survey made by the Bureau of Mineral Resources ever part of the area of the Savage River iron deposits. The purpose of the survey was to delineate more accurately the magnetic anomalies revealed by the previous surveys and hence to assist the Tasmanian Department of Mines in selecting drilling sites.

Explanatory notes to the Duchess geological Sheet.

This record describes the visit, by the author, to the United States to examine methods used in subsurface stratigraphy and studies in recent sedimentation.

There is an aggregate outcrop of 12,000 square miles of Permian-Triassic acid igneous rocks inland from Cairns and Townsville, North Queensland. The rocks consist of ignimbrite and rhyolite, which are structurally and magmatically related to three high-level intrusions the Herbert River, Esmeralda, and Elizabeth Creek Granites. This report describes the emplacement of the acid magma in the epizone, and the relationship with the ignimbrites.

This record describes Mesozoic plant fossils collected in 1960 by S. K. Skwarko from thirteen localities in the Northern Territory. The plant fossil localities were closely associated with marine faunal localities and it may shortly be possible to date the plant horizons accurately when determinations of fauna have been made.

This record summarises the activities of the Sedimentary Basins and Palaeontology sections. Sedimentary Basins listed are the Bowen, Georgina, Great Artesian and Amadeus Basins.

Ironstone occurs at a particular horizon within the Lower Proterozoic sediments in the Brooks Creek area of the Northern Territory. East of the Cosmopolitan Howley Mine, preliminary investigation of the ironstone, to assess its value as a source of iron ore, showed a possible reserve of 1000 tons of hematitic material per vertical foot over a length of 1500 feet.