This note describes a sample of beach sand. The specimens of foraminifera found in the sample are listed.

The area under investigation forms a portion of a coastal sandy belt 1,500 to 2,000 feet wide, which extends from Main Beach (Southport) to South Nobby (North Burleigh), and is about 5 to 15 feet higher than the low-lying coastal plains adjoining it on the west. The known deposits and probably all of the deposits of heavy minerals between Southport and North Burleigh occur either on the present sea beaches or in the eastern half of the sandy belt. Preliminary boring and sampling of the area was carried out early in 1948. Bores were put down to water level using a post hole auger. When the sand brought up from a borehole appeared to contain appreciable quantities of heavy minerals it was sampled by quartering. An account of the investigation is set down in this report. The distribution of heavy minerals and the tonnages available for mining are shown on the accompanying geological plans. Estimates of the quantities of heavy minerals have been tabulated.

Legacy product - no abstract available

This report describes the results of a micropalaeontological examination of rock samples from the Lesi and Oiapu structures, Papua.

This report describes the findings of a micropalaeontological examination of a small collection of limestones from Cape Range, Rough Range and Learmonth Aerodrome, Northwestern Australia. The collection is characteristic of the Tertiary deposits of the North West Basin. The majority of the limestones belong to the "f" stage (Middle Miocene) of the Netherlands East Indies "letter" classification but the shelly limestone from Rough Range, in the absence of zonal Miocene foraminifera is regarded as Lower Pliocene. A detailed palaeontological description of these samples is given in this report.

This palaeontological report describes a collection of fossils from Fitzroy Crossing.

The field season in the Kimberley Division of Western Australia for the year 1948 extended from May 2nd to October 15th. It is estimated that about four weeks of this time was spent in activities not directly related to geological work. Three distinct areas were covered during the season, these being Dampier Land, Mt. Ramsay Area, and Nerrima Structure. An account is given of the personnel involved and the work completed within each area.

A geological field party was engaged in this area from 9th May to 30th September, 1948. This report provides an account of the field operations undertaken throughout this period and describes personnel involvement.

The possibilities of finding evaporite deposits in Western Australia were investigated by C.L. Knight and E.K. Sturmfels on a reconnaissance trip from 12th September until 14th October, 1949. The localities in which primary gypsum beds or other indications of evaporites at depth were found or from which they are reported, are classified on the following pages according to the geological formations, and their position is shown on two accompanying maps.

On March 11th, 1949, severe earth tremors were felt in the Dalton area, and, less severely, over a considerable portion of New South Wales. These were succeeded in the epicentral area by numerous aftershocks during the following fortnight. G.M. Burton and the writer were detailed to investigate the tremors and left Canberra on the first day of their occurrence. The greater part of the week devoted to the investigation, was spent in the Dalton area. A reconnaissance embracing an area within a radius of some 40 miles of Dalton was also carried out with a view to determining the regional distribution of intensities, and the Chief Geologist circularised Post Masters and Police Officers stationed at fourteen N.S.W. towns from which some information about the tremors was to be expected. This report provides a general description of the earth tremors and their effects. Instrumental data readings are recorded. The geology and physiography of the area, and their relation to the position of the epicentral area, as well as the causes of the tremors, are discussed. Plans showing the distribution, on a modified Mercalli scale, of seismic intensities during the earth tremors are included.