Report on NT-1-MEP and NT-2-MEP for activities during the period completing 17-12-1993

Abstract

Cambridge Gulf has carried out extensive studies in order to prove conclusively the scientific and geological evidence gathered on each of these leases and to develop a method of bulk sampling that realistically indicates the quality, quantity and reserve of the diamond deposits in the tributaries. Two major on site investigation programmes were undertaken together with a number of desk top studies to model fluvial and marine occurrences and reviewed papers on the formation of the Joseph Bonaparte Gulf and the influence of contributing rivers. An investigation in 1989 identified that submerged palaeorivers were evident in near proximity to current day river sequences. These palaeo rivers are the only areas that contain terrestrial sediments. In 1991 approximately 190 line km of high resolution shallow seismic profiling data was gathered over NT-1-MEP and NT-2-MEP. This data was used to produce a geotechnical model and to target sites of bulk sampling. A bulk sampling survey is planned to be carried out in the following year, which will assess the nature and concentration of valuable minerals, in particular diamonds, which may be present within gravel units.