449 samples in Early Cambrian Observatory Hill Beds; Cadney Park Formation and Ouldburra Formation, from 19 seismic upholes drilled on PEL 23 have little base metal potential.

This consultant's interpretation was done to assist with Comalco's trona and petroleum exploration. The crystalline (Carpentarian) basement surface has been delineated at depths ranging from less than 200 m to greater than 3000 m. NE-trending...

SADME and BMR data were reprocessed to produce Bouguer and residual gravity contour maps.

120 magnetic anomalies were investigated (14 in detail). All 14 anomalies are located over areas interpreted as either basement ridges or on the flanks of basement ridges. Most anomalies are located on interpreted fault trends.

TRONA EXPLORATION: Of the 9 rotary/diamond holes drilled, only the first, Meramangye 1, intersected a unit equivalent to the Observatory Hill Beds, which was the target horizon for trona. Drillholes Manya nos 2-6 and Marla 7 intersected Cambrian red...

Exploration for trona and base metals was centred on the Marla region. Work included regional gravity and magnetic studies, acquisition of airborne magnetic and multi-channel radiometric data, with follow-up ground magnetic and gravity surveys,...

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