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.

A major purpose of the study, as it appears to me at this time, is to ascertain the presence of geochemical anomalies in the area of (copper) mineralization. Such anomalies, if established, may be correlated with the dispersion train phenomena and with the dispersion halo of the ore, in an area known as mineralization. A comparable study may be undertaken then, depending on the advice of the team, in an area of suspected but not known, mineralization. Further investigations, beyond the reconnaissance stage, may be projected, in consultation with the team, on completion of the orientation study. This report contains the author's tentative remarks on a proposed reconnaissance in South Australia. Objectives, background to the work, methods, and proposed operations are discussed.

Systematic testing of South Stradbroke Island was started on 5th January, 1948. The boring and concentrating of samples were carried out by Associated Minerals Pty. Ltd., Southport. Sitting, levelling and mapping of boreholes was carried out by the Bureau of Mineral Resources. Between January and June, boring was directed towards the high active dunes adjacent to the east coast, and the areas of fixed, vegetated dunes west of the active dunes. The results of the testing work are recorded in this report. The occurrence of heavy minerals has been tabulated. Eight accompanying locality, section, and contour plans are included.

This was the first study of its kind, by the Commonwealth team. The study included demonstrations of the dithizone tests for traces of some heavy metals in the field environment, of operational and sampling procedures, and geochemical reconnaissance. Several reconnaissance traverses were sampled and examined. Extractable forms of copper and, in a very presumptive manner, extractable forms of lead and zinc were sought in the test materials. In addition, tests for copper, lead and zinc were made in some ignited and fused specimens. The testing procedure and results are described in this report.

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.

Tsunamis are unpredictable and infrequent but potentially large impact natural disasters. To prepare, mitigate and prevent losses from tsunamis, probabilistic hazard and risk analysis methods have been developed and have proved useful. However, large gaps and uncertainties still exist and many steps in the assessment methods lack information, theoretical foundation, or commonly accepted methods. Moreover, applied methods have very different levels of maturity, from already advanced probabilistic tsunami hazard analysis for earthquake sources, to less mature probabilistic risk analysis. In this review we give an overview of the current state of probabilistic tsunami hazard and risk analysis. Identifying research gaps, we offer suggestions for future research directions. An extensive literature list allows for branching into diverse aspects of this scientific approach. Appeared online in Front. Earth Sci., 29 April 2021

The four field parties and the Airborne Geophysical Section continued operations in the area during the quarter ending 30th September, 1953. This report provides a summary of the geological and geophysical operations carried out during this period, and an overview of the staff and housing situation.

The Trough Area extends parallel to and 200 to 300 feet west of the eastern beach from approximately 4800 feet north of the zero line shown on the locality plan, to 6000 feet south of the zero line. It has a flat sandy floor 150 to 200 feet wide, and a foot or two below water level. The "trough" is bounded on the east by the fore-dunes, and on the west by an area of shifting sand which rises sharply to elevations of 25 to 35 or 40 feet. Deposits of heavy minerals occur at or near the surface at several localities along the western edge of the trough. This report gives an estimate of the quantities of heavy minerals occurring from 2100 feet north to 1100 feet north.

The features of the single-point resistance log, obtained in A.A.O. No. 2 Bore, Roma, are described. Single-point resistance, self-potential and geological logs of the lower section of the boreholes are shown. The results indicate that electrical logging can be effectively used for correlation problems and that salt water sands in the reservoir rocks can be detected with reasonable certainty.

The deposits of heavy-mineral sands which are at present being exploited along the East Coast occur on or within a few hundred feet of the ocean beaches. The occurrence of this deposit at a distance of nearly 1.5 miles from the beach suggests the possibility that other deposits may be found at some distance from the coast line. Of incidental interest is the possibility that the deposit, which presumably was formed by wave or surf action, may be at slightly higher level than the deposits adjacent to present day beaches. The locality, examination process, origin, and nature of the deposits are discussed in this report. The results, including estimates of the quantities of heavy mineral concentrates and the grades of the mineral bearing sands, are tabulated here.