Serval Resources reported that a ground geophysics programme on licence PL061 in the Kalahari Copper Belt, Botswana, has interpreted the D'Kar and Ngwako Pan Formation contacts in the southern portion of the surveyed area.
The results narrow the search on a licence the company describes as a priority because it lies north-east and on strike to Cobre's Ngami copper-silver project, and they help address mapping complications caused by Karoo volcanics and variable sand cover.
"It is encouraging that this ground geophysics programme has indicated the potential presence of the D'Kar and Ngwako Pan Formations within our licence area and provides a focus for future exploration efforts," said Robin Birchall, Serval's CEO.
The survey comprised 121 line-kilometres over 84 lines and was designed to detect the Ngwako Pan-D'Kar contact, map Karoo volcanic cover and define structural trends that could control mineralisation.
Interpretation identified a dominant northeast-southwest gradient interpreted as faulting or reactivation that separates a volcanics-dominated northern grid from a less-deformed southern grid.
The southern area shows a smooth magnetic signature consistent with thicker sediment cover and a broad curved low anomaly that may reflect an anticline/syncline geometry across the target horizon.
The mapped volcanics-sediment contact aligns with regional geology but is displaced about 270 metres south, and because the target horizon is magnetically gradational Serval recommends follow-up conductivity methods such as EM or ERT to better define drill targets.
Serval said the refined contact and interpreted structures will guide more accurate future surveys on PL061.
