On pp. 1-4, Johnson describes a trip in July 1978 to the Gawler Ranges area from Kimba to Streaky Bay in South Australia, with samples collected and stations visited.

On pp. 5-13, Johnson lists geological formations, in various locations in the Flinders Ranges and around Arkaroola (SA).

The last page has an incomplete rough itinerary, dated 30 January 1980.

All other pages are blank.